vmacair V900153 Underhood70 Air Compressors Instruction Manual

: June 15, 2024
: vmacair

UNDERHOOD 70™ AIR COMPRESSORS

V900153 Underhood70 Air Compressors

Installation Manual for VMAC System
V900153
2024+ GM 2500 – 3500 Pickup,
3500 Chassis Cab
6.6 L Duramax Diesel
www.vmacair.com

VMAC – Vehicle Mounted Air Compressors
VMAC Technical Support: 888-241-2289
VMAC Knowledge Base: kb.vmacair.com
Document: 1930500
Changes and Revisions

Revision| Revision Details| Revised by| Checked by| Impleme nted
---|---|---|---|---
Eng.| Tech.| Qual.
Mech.| Elec.
A| Initial release| MSP| MRH| ASE| RB| LPH| 28 Nov. 2023

Additional Application Information

2024+ GM 2500 – 3500 Pickup Duramax Diesel.
2024+ GM 3500 Chassis Cab 6.6 Duramax Diesel.
Vehicles with push button ignition may be equipped with automatic shutdown timers. See VMAC Knowledge Base article EXT-VR-003 for more information.

Registered Trademarks
All trademarks mentioned in this manual are the property of their respective owners. VMAC’s use of manufacturers’ trademarks in this manual is for identification of the products only and does not imply any affiliation to, or endorsement of said companies.
Loctite®, Loctite® 242 and Loctite® 567 are registered trademarks of Henkel AG & Company KGaA.
Nylok® is a registered trademark of Nylok Fastener Corporation.
Eaton Aeroquip® is a registered trademark of EATON AEROQUIP INC.
Chevrolet® , GM®, GMC® and Duramax® are registered trademarks of General Motors Company LLC.
Important Information
The information in this manual is intended for certified VMAC installers who have been trained in installation and service procedures and/or for anyone with mechanical trade certification who has the tools and equipment to properly and safely perform the installation or service. Do not attempt installation or service without the appropriate mechanical training, knowledge and experience. Follow all safety precautions. Any fabrication for correct fit in modified vehicles must follow industry standard “best practices”.
Notice
Copyright © 2023 VMAC Global Technology Inc. All Rights Reserved. These materials are provided by VMAC for informational purposes only, without representation or warranty of any kind, and VMAC shall not be liable for errors or omissions with respect to the materials. The only warranties for VMAC products and services are those set forth in the express warranty statements accompanying such products and services, if any, and nothing herein shall be construed as constituting an additional warranty. Printing or copying of any page in this document in whole or in part is only permitted for personal use. All other use, copying or reproduction in both print and electronic form of any part of this document without the written consent of VMAC is prohibited. The information contained herein may be changed without prior notice.
Printed in Canada

Safety

The information contained in this manual is based on sound engineering principles, research, extensive field experience and technical information. Information is constantly changing with the addition of new models, assemblies, service techniques and running OEM changes. If a discrepancy is found in this manual, contact VMAC Technical Support prior to initiating or proceeding with installation, service or repair. Current information may clarify the issue. Anyone with knowledge of such discrepancies, who proceeds to perform service and repair, assumes all risks.
Only proven service procedures are recommended. Anyone who departs from the specific instructions provided in this manual must first ensure that their safety and that of others is not being compromised, and that there will be no adverse effects on the operational safety or performance of the equipment.
VMAC will not be held responsible for any liability, consequential damages, injuries, loss or damage to individuals or to equipment as a result of the failure of anyone to properly adhere to the procedures set out in this manual or standard safety practices.
Safety should be the first consideration when performing any service operations. If there are any questions concerning the procedures in this manual, or more information is required, please contact VMAC Technical Support prior to beginning work.
Safety Messages
This manual contains various warnings, cautions and notices that must be observed to reduce the risk of personal injury during installation, service or repair and the possibility that improper installation, service or repair may damage the equipment or render it unsafe.
This symbol is used to call attention to instructions concerning personal safety. Watch for this symbol; it points out important safety precautions, it means, “Attention, become alert! Your personal safety is involved”. Read the message that follows and be aware of the possibility of personal injury or death. As it is impossible to warn of every conceivable hazard, common sense and industry standard safety practices must be observed.
This symbol is used to call attention to instructions on a specific procedure that if not followed may damage or reduce the useful life of the compressor or other equipment.
This symbol is used to call attention to additional instructions or special emphasis on a specific procedure.

Warranty

VMAC Standard Warranty (Limited)
For complete warranty information, including both VMAC Standard Warranty (Limited) and VMAC Lifetime Warranty (Limited) requirements, please refer to our current published warranty located at: www.vmacair.com/warranty
If you do not have access to a computer, please contact us and we will be happy to send you our warranty.
VMAC’s warranty is subject to change without notice.

vmacair V900153 Underhood70 Air Compressors - QR Code http://www.vmacair.com/warranty

VMAC Lifetime Warranty (Limited)
A VMAC Lifetime Limited Warranty is offered on the base air compressor only and only on UNDERHOOD™, Hydraulic Driven, Transmission Mounted, Gas and Diesel Engine Driven Air Compressors, Multifunction Power Systems, and other products as defined by VMAC, provided that (i) the purchaser fully completes and submits a warranty registration form within 3 months of purchase, or 200 hours of operation, whichever occurs first; (ii) services are completed in accordance with the Owner’s Manual; (iii) proof of purchase of applicable service kits are made available to VMAC upon request.
The VMAC Lifetime Warranty is applicable to new products shipped on or after 1 October, 2015.

Warranty Registration
The VMAC warranty registration form is located near the back of this manual. This warranty registration form must be completed and sent to VMAC at the time of installation for any subsequent warranty claim to be considered valid. There are 4 ways the warranty can be registered with VMAC:
www.vmacair.com/warranty
warranty@vmacair.com
877-740-3202
VMAC – Vehicle Mounted Air Compressors
1333 Kipp Road, Nanaimo, BC, Canada V9X 1R3
VMAC Warranty Claim Process
VMAC warranty work must be pre-authorized by VMAC. Claims are processed via our dealer network. If you are not a VMAC dealer, please select one to work with via our Dealer Locator: https://www.vmacair.com/dealer-locator/

https://qrs.ly/dnetwrp

Communicate with VMAC Technical Support at 1-888-241-2289 or tech@vmacair.com to help diagnose/troubleshoot the problem prior to repair. VMAC technical support will require the VMAC System ID, and hours on the compressor.
VMAC will provide direction for repair or replacement of the failed components.
If requested, failed parts must be returned to VMAC for evaluation.
Dealers may login to the VMAC website to view the “VMAC Labour Time Guide” (under “Agreements”) to see the allowable warranty labour times.
Warranty invoices must include the Service Ticket number, VMAC System ID#, hours on the compressor, and a detailed description of the work performed.
VMAC Warranty does not cover consequential damages, overtime charges, mileage, travel time, towing/recovery, cleaning or shop supplies.
Dealers submit warranty claims on behalf of the Vehicle Owner/End User affected by the defective part(s). The dealer ensures that all warranty credits are refunded back to the Vehicle Owner/End User who made the initial warranty claim.

In order to qualify for Lifetime Warranty (Limited), the completed warranty registration form must be received by VMAC within 3 months of the buyer receiving the Product(s), or 200 hours of operation, whichever occurs first.
If the completed warranty registration form has not been received by VMAC within 3 months of the buyer receiving the Product(s), or 200 hours of operation, the warranty period will be deemed to commence 30 days from the date of shipment from VMAC.
Failure to follow the warranty claim process may result in denial of the warranty claim.
VMAC Product Warranty Policies & Warranty Registration can be found on the VMAC website (see previous page for URL).

General Information

Optional Equipment Compatibility
While VMAC strives to design systems compatible with optional OEM equipment (such as running boards), it is impractical to develop systems that accommodate every OEM and aftermarket option or add-on. Whenever possible, VMAC endeavors to advise of compatibility issues in the “Additional Application Information” section of the manual. Even when specific optional equipment is determined by VMAC to be incompatible, it does not preclude the vehicle upfitter or end user from modifying the optional equipment to make it compatible with the installed VMAC system. VMAC does not warranty or accept responsibility or liability for the fitment, function or safety of any products modified in any way not expressly outlined in the installation manual.
Before Starting
Note and label all parts that are removed from the vehicle as many of the OEM parts will be reused during the installation of the VMAC system.
Read this manual prior to beginning the installation to ensure familiarity with the components and how they will fit on the vehicle. Identify any variations from the application list such as vehicle model, engines, or optional equipment (e.g., dual alternator, active steering assist, etc.).
Open the package, unpack the components and identify them using the Illustrated Parts List (IPL) included in the Fastener Pack.
Hose Information
Depending on other installed equipment, it might be necessary to move the air/oil separation tank from its intended location. The hoses used in VMAC compressor systems have a specific inner liner that is compatible with VMAC compressor oil. Use of hoses other than those supplied or recommended by VMAC may cause compressor damage and may void your warranty. Please contact VMAC for replacement hoses and further information.
Ordering Parts
To order parts, contact a VMAC dealer. The dealer will ask for the VMAC serial number, part number, description and quantity. Locate the nearest dealer online at www.vmacair.com/dealer-locator or call 1-877-912-6605.

vmacair V900153 Underhood70 Air Compressors - QR Code
3 http://www.vmacair.com/dealer-locator

Special Tools Required

GM flywheel locking tool P/N: J42386-A.
Pneumatic fan wrench removal set (such as Lisle® 43300) or a manual fan pulley holder (such as KD Tool® KD3900).
Pulley removal tool kit (such as a Lilse 39000, Jet H3565 or Performance Tool 389708 or equivalent).
Optional: GM specialty tool P/N: J45059 (Angle meter).

Torque Specifications
All fasteners must be torqued to specifications. Use manufacturers’ torque values for OEM fasteners.
The torque values supplied in Table 1 are intended for VMAC supplied components, or for use as a guide in the absence of a torque value provided by an OEM.
Apply Loctite 242 (blue) to all fasteners (except nylon lock nuts) unless otherwise stated.
Torque values are with Loctite applied unless otherwise specified.

Standard Grade 8 National Coarse Thread

Size (in)| 1/4| 5/16| 3/8| 7/16| 1/2| 9/16| 5/8| 3/4
Foot pounds (ft•lb)| 9| 18| 35| 55| 80| 110| 170| 280
Newton meter (N•m)| 12| 24| 47| 74| 108| 149| 230| 379
Standard Grade 8 National Fine Thread

Size (in)| 3/8| 7/16| 1/2| 5/8| 3/4
Foot pounds (ft•lb)| 40| 60| 90| 180| 320
Newton meter (N•m)| 54| 81| 122| 244| 434
Metric Class 10.9

Size (mm)| M6| M8| M10| M12| M14| M16
Foot pounds (ft•lb)| 5.| 19| 41| 69| 104| 174
Newton meter (N•m)| 6| 25| 55| 93| 141| 236

Table 1 — Torque Table

Preparing for Installation

Preparation for installation is very important. Missing a step or an item can cause problems in the installation or damage to components.
☑ Check off each item as it is completed so that no steps are missed.
When dissembling engine components, cover the openings to prevent debris from entering the system.

Disconnect both of the batteries.
Raise the front of the vehicle and support the axle on axle stands (or appropriate blocking).
Remove the passenger side running board.
When lifting the vehicle, ensure it is supported safely with appropriately rated axle stands.
Remove both of the skid plates.
Leaving the end links connected, remove the sway bar from the frame and support it on axle stands.
Remove the passenger side inner fender.
Drain the coolant into a clean container for reuse later.
Remove the air box (Figure 1).
Remove the resonator (Figure 1).
Remove the intake duct (Figure 1).
Remove the upper coolant hose (Figure 2).
Remove the upper fan shroud (Figure 3).
Leaving the fan clutch attached to the engine, remove the fan blades (Figure 4).
Remove the fan stator (Figure 5).
Rotate the fan clutch harness brace arm until it points to the passenger side valve cover (Figure 6).
Remove the fan clutch harness brace ball post (Figure 7).
Disconnect the lower coolant hose from the engine spigot (Figure 8).
Disconnected the coolant drainback hose from the lower “Tee” (Figure 8).
Remove the lower and “Tee” and short straight hose from the upper “Tee” (Figure 9).
Remove the hose support clip from the frame (Figure 10).
Remove the tension from the fan drive belt.
Remove and discard the front OEM pulley but retain the (×3) OEM crank pulley fasteners (Figure 11).

Modifying the Coolant Hoses and Fan Stator

Lower Coolant Hose Modifications

With the hose still on the vehicle, cut the coolant drainback hose at the indicated OEM hash mark (Figure 12).
Separate the lower coolant hoses from the “Tee” (Figure 13).
From the engine side of the hose, measure 5 7/16 in along the outside radius of the hose and cut the hose (Figure 14).
Insert the “Tee” into the modified engine side of the hose in the orientation shown and secure it using one of the OEM spring clamps (Figure 15).

Upper Coolant Hose Modifications

From the engine side of the hose, measure 6 1/16 in along the outside radius of the hose and cut the hose (Figure 16).
From the radiator side of the hose, measure 9 3/16 in along the outside radius of the hose and cut the hose (Figure 17). Fan stator modifications
Modify the lower stator gasket (Figure 19).
Modify the driver side stator mount (Figure 20, Figure 21, Figure 22).
Modify the passenger side stator mount (Figure 23, Figure 24).

Crank Pulley and Oil Cooler Installation

Remove the belt.
Remove and discard the idler and fastener (Figure 25).
Install the supplied idler spacer, idler, and idler adaptor (Figure 26).
Scrape any clear coat or rust from the inside front face of the crank pulley hub to ensure the VMAC crank pulley will sit squarely against it
Using the (×3) OEM crank pulley fasteners, install the VMAC crank pulley (Figure 27).
Install and tension the fan drive belt.
Using the OEM gear clamp, install the modified engine side hose and “Tee” (Figure 28).
Connect the drainback hose to the “Tee” and secure it using the OEM spring clamp.
Center the oil cooler on the main beam and secure it in place using the supplied fasteners, (Figure 29, Figure 30).
Install the short end of the supplied 90° lower radiator hose to the driver side spigot of the oil cooler and secure it with a supplied gear clamp.
Connect the other end of the hose to the engine spigot “Tee” and secure it using one of the OEM spring clamps.
Install the longer end of second supplied lower radiator hose to the passenger side spigot of the oil cooler and secure it with a supplied gear clamp.
Connect the other end of the hose to the upper OEM “Tee” and secure it using one of the OEM spring clamps.

Air Oil Separator Tank (AOST) Installation

Dependent upon other installed equipment, it may be necessary to move the AOST from its intended location. The hoses used in VMAC compressor systems have a specific inner liner that is compatible with VMAC compressor oil. Use of hoses other than those supplied or recommended by VMAC may cause compressor damage and may void the warranty.
The AOST must be level for proper air/oil separation, and to ensure that the oil level will display accurately in the sight glass.
Installing the AOST
The AOST will mount to the passenger side frame rail between the 2 forward body mounts (Figure 31).

vmacair V900153 Underhood70 Air Compressors - AOST
installed

Pickup Applications

Install the tank mounting brackets on the frame (Figure 32):
The AOST brackets mount to either side of the transmission crossmember.
Using the (×4) M10×1.5×130 bolts and M10 nuts, install the tank mounts and backing straps on either side of the transmission crossmember. Leave the bolts finger tight to allow for minor adjustment (Figure 32).
Remove the tank clamp pinch bolts.
Install the tank clamps over the front of the tank and slide them toward the centre of the tank.

Install the tank using the upper bolt pattern of the tank mounts (Figure 32):*

*Adjust the tank in the straps to bring the rear of the tank close to (but not touching) the rear cab mount.
*Install the (×2) pinch bolts and nuts into the mounting clamps. Leave the fasteners finger tight to allow for adjustment when installing the hoses.

Chassis Cab Applications

Install the tank mounting brackets on the frame (Figure 33):
The AOST brackets mount to either side of the transmission crossmember.
Using the (×4) M10×1.5×130 bolts and M10 nuts, install the tank mounts and backing straps on either side of the transmission crossmember (position the rear tank mount and backing strap a few inches to the rear of transmission crossmember – just as the flange starts to flare). Leave the bolts finger tight to allow for minor adjustment (Figure 33).
Remove the tank clamp pinch bolts.
Install the tank clamps over the front of the tank and slide them toward the centre of the tank.

Install the tank onto the tank mounts (Figure 33):*

*Mount the rear tank clamp to the lower bolt pattern.
*Mount the forward tank clamp to the upper bolt pattern.
*Adjust the tank in the straps to bring the rear of the tank close to (but not touching) the rear cab mount.
*Install the (×2) pinch bolts and nuts into the mounting clamps. Leave the fasteners finger tight to allow for adjustment when installing the hoses.
Ensure none of the fasteners are touching the AOST or the torsion bar.
Rotate the tank so that the directional arrow on the rear of the tank is pointing upwards (Figure 34). AOST orientation is critical. The arrow must be pointing up to prevent compressor failure due to oil starvation, or oil in the discharge air.
Reinstall the running board using the supplied low profile mounting brackets.

Main Bracket and Compressor Installation

In order to accommodate the VMAC main bracket, it may be necessary to deflect brackets supporting hoses and/or electrical harnesses. If bracket adjustment is required, ensure the OEM hoses/ harnesses are adequately protected from heat, vibration, and sharp or moving components.

Remove and discard the fastener directly below the power steering pulley (Figure 35).
Remove the lower idler from the FEAD bracket assembly and set it aside (Figure 36).
Thread the supplied stud into the extension post, leaving 3 1/2 in of the stud exposed (Figure 37).
Insert the roll pin into the extension post, followed by the idler fastener retained earlier. Thread the idler fastener in until it locks against the roll pin (Figure 38).
Install the stud into the engine, below the power steering pulley, and torque it to 21 ft•lb (Figure 39).
Remove and retain the idler fastener.
Discard the roll pin.
Torque the extension post to 21 ft•lb (Figure 40).
Using the supplied fasteners, install the main bracket onto the OEM AC bracket (Figure 41).
Using the supplied fasteners, install the FEAD bracket assembly and torque the fasteners to specification (Figure 42).
Reinstall the lower idler onto the FEAD assembly bracket (Figure 43).
Torque the tensioner and all of the idlers to specification.
Route the fan stator harness down, toward the steering box.
Apply the supplied protective loom on the OEM harness where it passes near the rear of the compressor (Figure 44).
Install the supplied heat wrap on the fuel hard line in the location indicated (Figure 45).
Remove the push mount cable tie from the battery box tab and reroute the OEM harness along the bottom of the tab (Figure 46).
Remove the inlet from the top of the compressor and cover the opening to prevent contaminants from entering the system.
Set the compressor onto the VMAC main bracket and install the front passenger side fastener finger tight. It may necessary to remove some of the plastic harness support clips to allow the compressor to fit (Figure 47).
Rotate the rear of the compressor toward the battery, slipping the discharge fitting on the rear of the compressor under the OEM harness bundle.
Route the straight fitting on the 3/4 in discharge hose down, along the oil dipstick, toward the engine oil pan.
Disconnect the harness from the module mounted to the top of the valve cover and route it over top of the discharge hose.
Connect the 90° fitting on the 3/4 in discharge hose to the matching fitting on the compressor.
Reconnect the harness to the module mounted to the valve cover.
Rotate the compressor into position on the bracket, insert the fasteners and torque them all to specification (Figure 48).
Rotate the discharge hose fitting as necessary to provide the best orientation, and tighten it.
The inlet valve is secured with bolts of varying lengths. Installing the bolts in the wrong location will damage the compressor housing when tightened.
Remove the protective covering and reinstall the Viton O-ring and inlet onto the compressor. Torque the inlet fasteners to specification (Figure 49).
Install and tension the VMAC FEAD belt (Figure 50).

Hose Requirements

Only attempt to shorten the supplied hose if there is access to the appropriate equipment. Do not attempt to cut the hose and splice it using hose clamps.
VMAC Compressor oil will degrade rubber lined hoses, use only hoses with an AQP elastomer type liner. Contact VMAC Technical Support at 1-888-241-2289 for further information.
The PTFE tubes and AQP elastomer lined hoses are specifically designed to work with VMAC compressor oil and at compressor operating temperatures.
Dependant upon the desired location of the AOST, the hose lengths provided with this system may not be ideal. VMAC suggests first trying to adjust the AOST within its mounts to take up any excess slack in the hoses. If this is not effective, the hoses can be shortened or replaced as necessary, or hose extenders can be used.
VMAC recommends shortening these hoses as a preferred alternative to coiling up and securing the excess. Shorter hose length will maximize system performance.
Avoid using 90° fittings wherever possible as they cause flow restrictions and negatively impact performance.
The following hoses are included with this compressor kit:

3/4 in × 104 in.
1/2 in × 83 in.
1/2 in × 46 in.
1/4 in (PTFE tube) × 129 in.
3/16 in (PTFE tube) × 118 in.

If longer hoses are required:
To order parts, contact a VMAC dealer. The dealer will ask for the VMAC serial number, part number, description and quantity. See page 6 for ordering information.

Eaton Aeroquip hoses with an “AQP” type inner liner are required.
OTC fittings are required for the VMAC supplied hose.
Push-lock fittings are suitable if FC332 hose is used.
If Push-lock fittings are being used, do not use hose clamps as they will damage the hose and cause leaks.

Hose Routing and Connections

When routing hoses, ensure cap plugs are installed so that contaminants do not get in the line. Take care when routing hoses, as a hose failure may damage the compressor and/or cause injury.
All hoses, tubes and wires that are installed, rerouted or shifted during the installation must be secured so that they do not contact any hot, sharp or moving parts. Use rubber coated P-clips wherever possible. Follow the routing suggestions in this manual and cover all hoses with plastic loom.
Ensure there is sufficient slack in the hose routing to allow for normal engine movement.
PTFE Tubing, Loom, and Push-To-Connect Fittings

PTFE tubing should only be cut using proper tubing cutters. Side cutters, utility knives, etc. will deform the tube, preventing a proper seal (or leave sharp edges which cut the internal O-ring).
When applying loom to the PTFE tube, leave approximately 1 in between the loom and the fitting.
Ensure the tube is clean, cut at 90° and that there are not sharp edges.
Lubricate the tube and firmly push it into the fitting so that the tube fully seats in the fitting.
Slide the collet out, away from the body of the fitting to lock the tubing in place.
Ensure the tube does not have any “play” to prevent the O-ring from wearing.
Insert the supplied cable ties into the hose routing bracket (Figure 52).
Using the supplied nuts, install the hose routing bracket onto the passenger side shock bolts (Figure 53).
Route the 90° fitting on the short 1/2 in hose down, behind the ECU.
Connect straight fitting on the short 1/2 in hose to the matching fitting on the side of the compressor.
From the ECU, route the short 1/2 in hose above the steering box, and over to the oil cooler.
Connect the 90° fitting on the short 1/2 in hose to the matching fitting on the passenger side of the oil cooler.
Connect the 90° fitting on the long 1/2 in hose to the driver side fitting of the oil cooler.
Route the long 1/2 in hose from the oil cooler, to the passenger side frame rail, passing the hose above the idler arm bracket.
Route the long 1/2 in hose along passenger side frame rail, past shock tower (routing will continue later).
Pass the 3/4 in discharge hose under engine oil pan, and up towards top of the passenger side frame rail.
Using a cable tie, secure the 3/4 in discharge hose to the coolant hose bracket (Figure 54).
Using the supplied P-clips and fasteners, secure the 3/4 in discharge hose to the transmission hard line near the front passenger side of the engine oil pan (Figure 54).
Route the 3/4 in discharge hose to the top of the passenger side frame rail and over the shock tower toward the rear of the vehicle.
Route the 3/4 in discharge hose to the firewall and secure it to the OEM ground wire stud using the OEM ground wire nut and supplied P-clip (Figure 55).
Route the 3/4 in discharge hose to the outside of the frame, under the body mount, and over to the AOST (Figure 55).
Secure the 3/4 in discharge hose to the engine side set of cable ties inserted into the hose routing bracket earlier(Figure 56).
Route the long 1/2 in hose to the AOST, following the same routing as the 3/4 in discharge hose.
Secure the long 1/2 in discharge hose to the hose routing bracket using the cable ties.
Connect the 3/4 in and 1/2 in hoses to the matching fittings on the AOST.
Apply split loom to the 3/16 in and 1/4 in PTFE tubes.
Connect the PTFE tubes to the push-to-connect fittings on the AOST.
Route the PTFE tubes along the inside of the AOST and over top of the body mount.
Route the PTFE tubes up the firewall to the passenger side battery.
From the passenger side battery, route the PTFE tubes along the OEM harness running over top of the engine, and connect them to the matching fittings on the inlet (Figure 57).

Adding Oil to the System

The VMAC supplied and approved compressor oil must be used in this system. Failure to use this special oil will result in damage to the compressor and will void warranty.
Do not overfill the system. Overfilling the system with oil can flood the sight glass window and make the system appear empty.

Lower the vehicle from the axle-stands.
Ensure the vehicle is parked on level ground.
Remove the oil filter from the AOST and discard the cardboard warning tag.
Apply a light film of compressor oil to the filter gasket and thread the filter onto the AOST until the gasket makes contact. Tighten the filter an additional 3/4 to 1 turn after the gasket contacts the base.
Remove the cap from the oil-fill port located on the Inlet valve (Figure 58).
Add the 4 L (1 USG) jug of oil to the system.
Rotate the compressor clutch by hand while adding oil to speed the process. Do not use power tools to rotate the clutch.
Allow a few minutes for the oil to drain into the AOST. Check the level at the sight glass at the front of the AOST.
Continue adding oil from the 1 L (1 qt) bottle until the level is correct.
Replace the oil fill cap and tighten.

Electrical Schematic

vmacair V900153 Underhood70 Air Compressors - throttle
control

Electronics and Control Component Installation

Best Practices

To confirm a good ground, use an ohm meter to measure the resistance between the ground point and the negative battery terminal. Resistance should be less than 1 Ω.
Route all wires to ensure they will not contact hot, sharp or moving parts (including the park brake mechanism, steering column, and pedals).
Before drilling any holes ensure there are no OEM wires, hoses, or components that may be damaged.
Do not use a test light to probe for power on vehicle circuits, the increased current draw of the test light may damage components.
VMAC recommends using only sealed crimp and solder butt connectors for all electrical connections.
To ensure a durable connection, use only good quality crimping tools.
Apply loom to all wiring:
Use high temperature loom in areas where high temperatures may be expected.
Use spiral loom in areas with high vibration.

In-line Butt Splice Connections

Cut the wire approximately 2 in from the connector.
Strip approximately 3/8 in from the end of both sides of the cut wire, as well as from the end of the wire being spliced in-line.
Twist the wire to be spliced in-line, together with the “live” side of the wire (not the wire attached to the connector).
Slide the butt connector onto the twisted wires and crimp it.
Insert the “connector side” of the wire into butt connector and crimp it.
Lightly tug the wires to ensure they are properly crimped.
Using a heat gun, carefully apply heat to the butt connectors to seal the connection.

Tying into OEM connectors
Some OEM connectors may have locking tabs that must be disengaged prior to inserting a crimped connector.
Control Box

Install the control box in a convenient location in the cab (such as the lower dashboard panel), positioned so that the wire harness will reach the compressor.

Throttle Control

Using cable ties, secure the throttle control under the dashboard. Ensure it is away from moving parts and positioned so that the buttons and LED lights are accessible.

Connecting the Wiring

Unplug the OEM cable from the accelerator pedal and plug it into the matching connector from the throttle control. Plug the cable from the throttle control into the matching connector on the accelerator pedal.
Connect the interface harness to the matching connector from the control box.
Attach the (×2) green wires with ring connectors running from the white 4 pin interface connector, and the throttle control, to a good ground under the dashboard.
Remove the driver side kick panel in the driver side footwell (to the left of the service brake).
Locate the X210 inline connector (Figure 60 and Figure 61).
Unlatch the connector and remove the top cover to expose the wires.
Discard the connector cover as it will not be reinstalled.
The wires populating pins 24 and 23 of the X210 connector are a twisted pair (blue wire and white wire).
Splice the light blue wire from the throttle control to the wire at pin 24 (blue wire) of the X210 connector (Figure 62).
Splice the grey wire from the throttle control to the wire at pin 23 (white wire) of the X210 connector (Figure 62).
Locate the X3 connector (blue outer with grey inner) in the K9 Body Control Module (BCM) (Figure 63). There are several white wires with stripes that are easily confused.
Ensure pin 17 is used (Park signal).
Splice the black wire running from the VMAC 4 pin interface connector to the wire at pin 17 (white wire with violet stripe) (Figure 64).
Locate and disconnect the X213 Auxiliary Instrument Panel Harness (14 pin light grey connector) under the driver side dashboard (near the exterior wall) (Figure 65).
Insert the terminal from the orange wire (with a terminal on one end and a butt connector on the other end) into pin 13 of the X213 connector. If pin 13 of the X213 connector is already populated, continue to the next step.*
*Cut the terminal off of the orange wire and splice it to the existing wire populating pin 13.
Splice the orange wire to the red wire from the white 4 pin interface connector.
Connect the red wire with the bullet connector, running from the control box, to the matching red wire running from the throttle control. Route the following wires into the engine compartment via a grommet in the firewall:*
*Grey cable with the green plug connector from the control box.
*Grey cable with the black connector from the throttle controller.
*White wire with a bullet connector from the interface cable.
Cover all of the engine compartment wires with plastic loom.

Compressor connections

Route the (×2) grey cables and the white wire over to the compressor.
Connect the grey cable with the green plug connector to the corresponding connector coming from the rear of the compressor.
Connect the grey cable with the black connector to the matching connector on the pressure transducer at the compressor.
Connect the white wire with the bullet connector to the matching connector at the compressor clutch.
Using one of the supplied P-clips, secure the clutch wire and pressure sensor harness, along with the coolant reservoir hose, to one of the inlet fasteners.

Remote Operation (Optional)

The VMAC compressor can be started, and shut down remotely using the remote start/stop wires.
The remote wires are tucked into the heat shrink tubing at the base of the control box (Figure 66).

vmacair V900153 Underhood70 Air Compressors - stop
wires

Installation

Connect the red wire (ON) to a switch that will apply a momentary ground when activated.
Connect the black wire (OFF) to a switch that will apply a momentary ground when activated.

Starting the Compressor via Remote Start

Place the vehicle transmission in “PARK” and fully apply the parking brake.
Start the engine and allow the vehicle to reach operating temperature.
Ensure the oil level in the AOST is above the “ADD” line (this should be checked while parked on level ground).
Ensure the vehicle hood is closed.
Ensure all compressor air valves/tools are closed.
Turn on the compressor using the remote momentary “ON” switch.

Shutting Down the Compressor via Remote Shutdown

Close all open air valves/tools and allow the system to build to full pressure (factory default: 150 psi).
Allow the engine speed to reduce to VMAC base idle for at least 10 seconds.
Turn the compressor off using the remote momentary “OFF” switch.

Completing the Installation

Check all wiring, hoses and tubes to ensure that they will not contact any hot or moving components and will not interfere with the operation of the vehicle. Ensure all wiring, hoses and tubes are secured with cable ties and protected with loom as required.
Cover all VMAC under-hood wiring with high heat plastic loom (if not done previously). Secure the harness with cable ties as needed to avoid hot, sharp or moving components.
Pull any excess wiring back into the cab and tie it up and out of the way under the dash with cable ties.
Replace all dash panels and covers removed during installation.
Using the supplied nut, install the fan clutch harness brace ball post (retained earlier) onto the supplied bracket (Figure 67).
Install the modified fan stator, mounting the VMAC bracket with OEM ball post to the top passenger side mount (Figure 68).
Mount the fan clutch harness brace to the relocated ball post.
Install the VMAC fan clutch extension harness between the clutch fan and the OEM harness.
Route the clutch fan harness under the engine and secure it to the OEM wire bundle attached to the front of the engine oil pan.
Reinstall the fan onto the fan clutch.
Reinstall the upper fan shroud.
Reinstall the sway bar using the OEM fasteners, and VMAC sway bar spacers (Figure 69).
Reinstall both of the skid plates.
Reinstall the passenger side fender liner.
Using the OEM gear clamp, install the engine side of the modified upper coolant hose onto the engine spigot and orient it toward the radiator.
Install the radiator end of the modified coolant hose onto the radiator spigot. Rotate the hose up 10° (toward the driver side) and secure it with the OEM gear clamp.
Install the supplied coolant tube between the modified hoses and secure it in place using the supplied gear clamps (Figure 70).
Reinstall the intake tube.
Reinstall the resonator.
Reinstall the air box.
Fill the coolant system with the saved coolant.
Connect the batteries.
The System Identification Plate must be attached to the vehicle at the time of installation. This plate provides information that allows VMAC to assist with parts and repairs.
Locate a conspicuous area in the engine bay (where the tag will be easily noticed) to install the System ID tag.
Mark and drill (×2) 7/64 in holes and secure the plate with the supplied selftapping screws (Figure 71).
To alert any technicians that may service the vehicle, affix the servicing caution/ contact label in the engine compartment near the hood latch in a visible location (Figure 72).
As part of the installation process, ensure that the safety and operational instruction decal is affixed in an obvious location so that it can be seen by vehicle operators. A good spot for this is usually on the inside of the door or on the panel underneath the steering wheel (Figure 73).

Air Receiver Tank

If an air receiver tank will be used with this system, a check valve not supplied) must be installed to prevent damage to the system.
Once a check valve is installed, pressure in the air receiver tank will not be relieved when the compressor system blows down. This is normal operation.
Prior to performing any service work on the system, discharge any stored air in the air receiver tank.
If an air receiver tank will be used with this system, the following installation procedure must be used to prevent damage to the system.
The VMAC compressor system will automatically depressurize when it is shutdown, therefore the hose from the VMAC AOST to the air receiver tank must have a check valve installed; this prevents blow back and moisture from the receiver tank entering the AOST
While the air receiver tank can be installed at any height in relation to the AOST, the discharge hose running from the AOST must be installed as high as possible on the air receiver tank to prevent problems with condensation that may have accumulated in the receiver tank (Figure 74).
Drain the condensed water from the receiver tank daily.

vmacair V900153 Underhood70 Air Compressors - Air receiver
tank

Recommended Accessories

While the compressor system will function without the following accessories, VMAC strongly recommends their use for optimal performance.
See the “Accessory Product” section of this manual on page 66 for a list of products available for purchase through VMAC.
Receiver Tank
An air receiver tank provides a buffer as it gives the compressor time to react by increasing the engine speed and producing air before the tool stalls. It also has the advantage of lowering the duty cycle of the compressor system.
Pressure Gauge
While not critical to system performance, a pressure gauge is important for fine tuning the system and simplifies any potential troubleshooting.
Install a 200 psi pressure gauge downstream of the air discharge valve.
Pressure Regulator and/or Lubricator or FRL
The compressor can produce air pressures up to approximately 175 psi (1206 kPa). It is the responsibility of the user to know the pressure and air flow requirements of the tools powered by the air compressor system.
An appropriate air pressure regulator and lubricator can be installed downstream of the air discharge valve. Failure to regulate the air pressure may cause damage to the tool.

Testing the Installation

Ensure the following has been completed:

Place the automatic transmission in “PARK” and apply the park brake.
Turn the ignition “ON” but do not start the engine.
Note: Vehicles with push button start must be placed into “Service Mode” for the following tests (see the vehicle’s owner’s manual for instructions).
Check the control box to see if it is illuminated. If there is no display, there is no power to the control box.

Press the “ON” button on the control box.*

*The green LED should illuminate.
*The “STATUS”, “PRK BRAKE”, and “PRNDL” LED’s on the DTC should illuminate.

Shift the vehicle into “NEUTRAL”.*

*The green LED on the control box should flash and the display will flash “OUT OF PARK”.
*The “PRNDL”, LED on the DTC will turn off.

Disengage the park brake.*

*The “PRK BRAKE” LED on the DTC will turn off.
Shift the vehicle back into “PARK”.
Reengage the park brake.
Press the “OFF” button on the control box, followed by the “ON” button.
The green LED on the control box, and the interlock LED’s on the DTC should illuminate.
Press the “OFF” button.
Turn the ignition “OFF”.
The engine must be running to complete the final steps in the safety test. This will be done after the pre-start checks have been completed

Place the vehicle in a safe operating position and adequately block the wheels. Ensure that there are no people around the vehicle before beginning the test
Before Starting the Engine Checklist
Ensure the following has been completed:

Verify that the compressor oil level at the AOST sight glass is correct.
Verify that the vehicle coolant level is correct.
Perform a final inspection of the installation to ensure everything has been completed.
Check all wiring for security and protection. Ensure nothing is touching the compressor body.
Install the VMAC Air Test Tool (P/N: A700052) with the 70 cfm (0.190 in) orifice installed and the ball valve closed.
Ensure all of the compressor outlets are closed.
Ensure the parking brake is engaged and the transmission is in “PARK”.
Disconnect the clutch wire at the bullet connector near clutch (required for calibration).
Secure the clutch wire away from the belt line.
Start the engine.

After Starting the Engine Checklist.

Check for any leaks, confirm belt alignment, and ensure the belts are rotating properly.
Close and latch the hood.
Allow the vehicle to reach operating temperature.

DTC Calibration

Press the “ON” button on the control box. The green LED on the control box will turn on. The DTC will turn on with the “STATUS”, “PRK BRAKE”, and “PRNDL”, LEDsilluminated. If not, ensure that the vehicle is in Park with the Park Brake applied.
Press and hold “▲” and “▼” buttons in the “RAMP UP PRESSURE” column for several seconds until all of the LEDs turn on. Then release the buttons (this indicates the DTC is in “Idle Adjust Mode”).
The engine RPM will stay at VMAC base idle (approximately 1,500 rpm) regardless of the pressure level returned by the system pressure sensor.
Allow the DTC to calibrate for 3 minutes. During this time the “STATUS” LED will occasionally flash indicating that the DTC is calibrating. The engine speed will eventually settle at VMAC base idle (approximately 1,500 rpm).
After 3 minutes. Press the “OFF” button on the control box. ☐ Shut down thevehicle.
Reconnect the clutch wire at the bullet connector.
Restart the vehicle.
Press the “ON” button on the control box. The green LED on the control box will turn on. The DTC will turn on with the “STATUS”, “PRK BRAKE”, and “PRNDL”, LEDs illuminated. If not, ensure that the vehicle is in Park with the Park Brake applied.
The compressor should start and begin to build air slowly.
Note: Engine speed will be very low during DTC calibration.
Press and hold “▲” and “▼” buttons in the “RAMP UP PRESSURE” column for several seconds until all of the LEDs turn on. Then release the buttons (this indicates the DTC is in “Idle Adjust Mode”).
The engine RPM will start low since calibration is incomplete.
Press the “MAX RPM” down button 8x to drop the VMAC base idle to 1,100rpm.
Allow the DTC to finish calibrating for another 3 minutes. During this time the “STATUS” LED will occasionally flash indicating that the DTC is calibrating. The engine speed will eventually settle at VMAC base idle (approximately 1,100 rpm).
After 3 minutes. Press the “OFF” button on the control box.
Shut down the vehicle.
Reconnect the clutch wire.

Continue Safety Test

Close and latch the hood.
Start the vehicle.
Allow the vehicle to run for a minimum of 30 seconds.
Press the “ON” button on the control box.
When the VMAC system is first engaged, the engine speed should increase to approximately 2,300 rpm and then drop down to VMAC base idle (approximately 1,100 rpm) once system pressure is reached.

With the system running, check for:*

*Coolant leaks.
*Compressor oil leaks.
Allow the compressor to run until the system reaches full system pressure.
Engine speed should reduce to approximately 1,100 rpm.
Turn off the compressor.
Shut down the engine.
Check the compressor oil level after the engine has been shut down and the oil level has had time to stabilize.
Ensure any stored air is drained from the system prior to adding oil.
Add oil as necessary to bring the level to the “MAX” line in the sight glass and check for leaks.
Start the engine.
Turn on the compressor and allow it to build to full system pressure.
Release the park brake.
Open the ball valve to drain the air from the system.
The engine speed should not increase.
Re-engage the park brake.
Press the “OFF” button on the control box.
Press the “ON” button on the control box.
Allow the engine speed to stabilize after re-engaging the compressor.

With the brake pedal firmly depressed, shift the vehicle into “REVERSE”.*

*The engine speed should reduce to OEM base idle (Approximately 650 rpm).
*The green LED on the control box will go out indicating the system has shut down.
*Shift the vehicle back into “PARK”.
*Cycle the compressor off, then on again to reset the safety parameters.
*Repeat these steps in all gear selector positions to ensure the engine speed remains at OEM base and the system shuts off when the vehicle is shifted out of “PARK”.

The VMAC digital throttle is equipped with an auto calibration and engine learning routine that will assist with maintaining accurate and stable engine speeds. No user input is required unless the DTC is replaced or reset.
Operators may however notice that while the system is at full system pressure and the vehicle is at base VMAC idle, the vehicle engine speed may drop by a few hundred rpm and then return to normal VMAC base idle as the VMAC digital throttle control auto calibrates. This is normal and should only occur once each time the system is being operated.
Final Testing
Ensure the following has been completed:

Operate the system with an air tool (or the VMAC Air Test Tool with the appropriate orifice installed) for at least 1/2 hour (1 hour preferred).
Road test the vehicle for approximately 14 miles (20 km).
Observe the compressor operation to ensure that the belt alignment is good and nothing is rubbing or contacting hot components.
Check all components, connections and fasteners once the engine is turned off and the system has cooled.
Check the coolant level after the engine has been operated.
Check the compressor oil level after the engine has been shut down and the oil level has had time to stabilize.

Performance Testing and System Adjustments

Performance Testing and System Adjustment
System operation can be tested using the tools that will be operated by the system or by using the VMAC Test Tool (A700052) with the 70 cfm (0.190 in) orifice in the outlet to simulate tool use (Figure 75).

vmacair V900153 Underhood70 Air Compressors - Air Test
Tool

Disconnect all downstream equipment (hose reels, etc.) and connect the test tool directly to the discharge fitting on the AOST.
Ensure there are no leaks in the test tool. The system may not idle down if there are leaks in the lines or fittings.

Install the VMAC test tool at the AOST outlet with the 70 cfm (0.190 in) orifice.
Ensure that the ball valve is closed.
Place the transmission in “PARK” and fully apply the park brake.
Allow the engine to run until it is at operating temperature.
Turn on the air compressor system and allow it to operate until the oil is warm.

Observe the pressure gauge. Pressure should be approximately 150 psi.

Open the ball valve on the test tool and observe the engine tachometer:*
*Engine speed should increase to approximately 2,300 rpm.
Close the air valve slowly to allow the system pressure to rise.
Once system pressure is at maximum, slowly open the ball valve on the test tool until the pressure on the gauge begins to drop. Engine speed should ramp when the pressure drops to approximately 140 psi.

Digital Throttle Control Operation and Adjustments

The throttle control is configured at the factory for optimum performance at maximum cfm. In applications where maximum cfm is not required, or noise is a concern, the throttle control can be adjusted to reduce the maximum VMAC rpm.
Safety features
The throttle control has built in safety features that will disable the system if an unsafe condition is detected, or either of the lock out parameters is not met (the vehicle must be in “PARK” and the park brake must be engaged).
If an unsafe condition is detected, the “STATUS” LED will turn off, and engine speed will return to idle. Once all unsafe conditions have been removed, the system must be cycled off, then on again to reset it. Once the system powers up, the “STATUS” LED will illuminate, and the system will operate normally.

vmacair V900153 Underhood70 Air Compressors - Throttle
control

If the park brake is released, or the vehicle is placed in gear, the “STATUS” LED and the corresponding lockout LED will turn off and the throttle control will deactivate. This will reduce engine speed to base idle.
In order to activate the system again, re-engage the appropriate lockout and cycle the VMAC “OFF” then “ON” via the control box.
MAX RPM
Maximum VMAC rpm can be adjusted between 1,500 rpm and 2,500 rpm (in 50 rpm increments) via the “▲“ or “▼” buttons in the “MAX RPM” column.
RAMP UP PRESSURE
“RAMP UP PRESSURE” is the amount of pressure the system will drop before the engine speed is increased to generate air; as air continues to be used and the pressure drops, engine speed will increase until maximum VMAC rpm is achieved.
“RAMP UP PRESSURE” should only be adjusted if the maximum system pressure is changed (via the inlet regulator). To maintain proper performance, and rapid response to air demand, ensure the “RAMP UP PRESSURE” is set at no more than 20 psi below the maximum system pressure.
The “RAMP UP PRESSURE” can be set to “100 PSI”, “120 PSI”, “140 PSI”, or “160 PSI via the “▲“ or “▼” buttons in the “RAMP UP PRESSURE” column; an LED will illuminate beside the setting that has been selected.
Factory Reset
The throttle control can be reset to factory default values via a button inside the throttle control box.
To perform a factory reset, turn the system on and allow the engine speed to drop to VMAC base idle (approximately 1,000 rpm). Using a paper clip (or similar object), push and hold the factory reset button for 5 seconds. All of the LED lights will illuminate for several seconds while the settings revert to their defaults. Once the LED’s return to their normal state, the DTC will need to be recalibrated.
DTC Calibration

Disconnect the clutch wire.
Start the engine and allow it to reach normal operating temperature.
Press the “ON” button on the control box. The green LED on the control box will turn on. The DTC will turn on with the “STATUS”, “PRK BRAKE”, and “PRNDL”, LEDs illuminated. If not, ensure that the vehicle is in Park with the Park Brake applied.
Press and hold “” and “” buttons in the “RAMP UP PRESSURE” column for several seconds until all of the LEDs turn on. Then release the buttons (this indicates the DTC is in “Idle Adjust Mode”).
The engine RPM will stay at VMAC base idle (approximately 1,500 rpm) regardless of the pressure level returned by the system pressure sensor.
Allow the DTC to calibrate for 3 minutes. During this time the “STATUS” LED will occasionally flash indicating that the DTC is calibrating. The engine speed will eventually settle at VMAC base idle (approximately 1,500 rpm).
After 3 minutes. Press the “OFF” button on the control box. ☐ Shut down the vehicle.
Reconnect the clutch wire at the bullet connector.
Restart the vehicle.
Press the “ON” button on the control box. The green LED on the control box will turn on. The DTC will turn on with the “STATUS”, “PRK BRAKE”, and “PRNDL”, LEDs illuminated. If not, ensure that the vehicle is in Park with the Park Brake applied.
The compressor should start and begin to build air slowly.
Note: Engine speed will be very low during DTC calibration.
Press and hold “” and “” buttons in the “RAMP UP PRESSURE” column for several seconds until all of the LEDs turn on. Then release the buttons (this indicates the DTC is in “Idle Adjust Mode”).
The engine RPM will start low since calibration is incomplete.
Press the “MAX RPM” down button 8x to drop the VMAC base idle to 1,100rpm.
Allow the DTC to finish calibrating for another 3 minutes. During this time the “STATUS” LED will occasionally flash indicating that the DTC is calibrating. The engine speed will eventually settle at VMAC base idle (approximately 1,100 rpm).
After 3 minutes. Press the “OFF” button on the control box.
Shut down the vehicle.
Reconnect the clutch.

For more information on the digital throttle, including error codes, see the related article the VMAC Knowledge Base: https://kb.vmacair.com/help/vmac- digital-throttle-control

vmacair V900153 Underhood70 Air Compressors - QR Code
4 https://qrs.ly/5geu4wj

Accessory Products from VMAC

| Compressor Service Kits
200 Hour or 6 Month Service Kit – Part number: A700019
Includes 5 L VMAC high performance compressor oil, oil filter, air filter, and next service due decal.
400 Hour or 1-Year Service Kit – Part number: A700020
Includes 5 L VMAC high performance compressor oil, oil filter, air filter, coalescing filter, pressure relief valve, muffler, and next service due decal.
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vmacair V900153 Underhood70 Air Compressors - Air
Aftercooler | Air Aftercooler — 70 cfm
Part number: A800070
Improves tool performance and extends the life of air tools; removes up to 80% of water from compressed air; includes automatic water drain.
• Max air flow: 70 cfm / 175 psi.
• Port size: 3/4 in NPT inlet and outlet.
• Electrical: 12 V.
• Dimensions: 17 in (43.2 cm) L × 8.0 in (20.3 cm) W. × 14.5 in (36.8 cm) H.
• Weight: 35 lb (15.8 kg).
| Filter Regulator Lubricator (FRL) — 70 cfm
Part number: A700151
Extends the life of air tools; filter removes contaminants from the compressed air, adjustable regulator can reduce air pressure going to tools, lubricator adds atomized tool oil to the air stream to lubricate air tools (Tool oil not included).
• Max air flow: up to 70 cfm / 150 psi
• Port size: 3/4 in NPT inlet and outlet
| 1/2 in × 50 ft Hose Reel
Part number: A700007
Spring-loaded 1/2 in × 50 ft hose reel; steel construction; full flow shaft and swivel for maximum performance.
| VMAC De-icer Kit
Part number: A700031
Cold climate heater package for operating VMAC compressors in cold climates; proven at temperatures of -30 °C (-22 °F). Requires 12V DC at 10A.
vmacair V900153 Underhood70 Air Compressors - Air Receiver Tank
2 | 10 Gallon Air Receiver Tank w/ Mounting Feet
Part number: A300047
Air receiver tanks are used for lowering compressor duty cycle and removing water from compressed air. Recommended for optimum operation of VMAC
Hydraulic Air Compressors, VMAC Diesel Driven Air Compressors, UNDERHOOD40, UNDERHOOD70 – Green Series Air Compressors, and VMAC
Multifunction Power Systems, which include standby mode; ASME certified; includes fittings, 200 psi pressure relief valve, tank drain, and 200 psi pressure gauge.
• Max pressure: up to 200 psi.
• Dimensions: 30 in (76.2 cm) L × 10 in (25.4 cm) D.
• Weight: 33 lb (15 kg).
vmacair V900153 Underhood70 Air Compressors - Air Receiver Wing
Tank | 35 Gallon Air Receiver Wing Tank
Part number: A300010
Air receiver tanks are used for lowering compressor duty cycle and removing water from compressed air. Recommended for optimum operation of VMAC
Diesel Air Compressors, Hydraulic Air Compressors, UNDERHOOD40, UNDERHOOD70 – Green Series Air Compressors, and VMAC Multifunction Power Systems, which include standby mode; ASME certified; includes fittings, 200 psi pressure relief value, tank drain, and 200 psi pressure gauge.
• Max pressure: up to 200 psi.
• Dimensions: 73 3/4 in (187.3 cm) L × 14 in (35.6 cm) D.
• Weight: 95 lb (43.1 kg).

Notes
……………………………….

Warranty Registration

This form must be fully completed and returned to VMAC at the time the vehicle is put into service. Warranty may be void if this form is not received by VMAC within 3 months of receiving the vehicle, or 200 hours of operation, whichever occurs first.
VMAC’s Warranty policy and registration can be viewed online at: www.vmacair.com/warranty

vmacair V900153 Underhood70 Air Compressors - QR Code
5 http://www.vmacair.com/warranty

Product Information
System Identification Number: V
Compressor Serial Number: P
Owner / End User Information
Company Name:
City:
State / Province:
Phone:
Email Address:
Date vehicle was put into service (Day/Month/Year):
Installer Information
Installer Company Name:
City:
State / Province:
Submitted by
Name:
Phone:
Email Address:
Vehicle Information (Optional)
Unit:
Year:
Make:
Model:
Vehicle Identification Number:

Manufactured by 888-241-2289
877-740-3202
tech@vmacair.com
warranty@vmacair.com
www.vmacair.com
kb.vmacair.com
1333 Kipp Road, Nanaimo,
B.C., V9X 1R3 Canada

Documents / Resources

| vmacair V900153 Underhood70 Air Compressors [pdf] Instruction Manual
V900153 Underhood70 Air Compressors, V900153, Underhood70 Air Compressors, Air Compressors, Compressors
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