mAXPEENINGRODS 7500 lbs Rear Air Suspension Bags Kit Installation Guide

AIR SPRING KIT
INSTALLATIN GUIDE
FIT FOR CHEVROLET
GMC 2500 3500

REAR AIR HELPER SPRING LEVELING KIT

AIR SPRING BAG KIT LIST

Mounting brackets

1| | 2X Upper
mounting bracket (Left and right)| 2| | 2X Lower mounting
bracket (Left and right)| 3| | 4X Roll plate
---|---|---|---|---|---|---|---|---
4| | 2x Support block| 5| | 1x Cable bracket| 6| | 2X Axle strap

Air Spring Bag and Air line

All Hardware kits

9| | 4X Carriage bolts 3/8-16UNC63| 10| | 5 X Hex-cap screw 5/\6-18UNC32| 11| | 4X Hex-cap screw 3/8- 4UNF25
---|---|---|---|---|---|---|---|---
12| | 4X Hex flange bolt 3/8- 6UNC38| 13| | 2X Hex head bolt 3/8-I16UNCI19| 14| | 4X Flat-head socket cap screw 3/8-24UNF19
15| | 8 X Flat washer MIO| 16| | 12X Flat washer M8| 17| | 2X Anti-slip gasket φ8
18| | 4X Lock washer| 19| | 2X Rubber washer| 20| | 4X Hexagon flange nut 3/8-I16UNC
21| | 6 X Hex nylon nut 3/8-16UNC| 22| | 5 X Hex nylon nut 5/16-18UNC| 23| | 4X Hex thin nut 8V1 3mm thick
24| | 2X 90° Air fitting G1/8-Ø6 (male)| 25| | 2X Inflation valve with cap| 26| | 1X R-clamp
27| | 1X Heat shield| 28| | 1X Thermal Sleeve Φ 10190mm| 29| | 2X Hose clamp
30| | 6X Zip tie 1905| | | | | |

PRE-INSTALLATION NOTICE

• This product wil l not increase the load capacity of your vehicle the
• Do not exceed manufacturer’s recommended weight limit
• The installation process may require drilling professiona l installation is recommended to ensure personal safety
• All modifications must be installed by qualified personne l and in compliance with your local modification regulations

INSTALLATION GUIDE

ASSEMBLING THE AIR SPRING

REMOVING THE JOUNCE BUMPER AND INSTALLING THE UPPER BRACKET

STEP 1. Raise the vehicle and support it using safety stands so that the axle can be safely dropped away from the frame, and the air spring assemblies can be put into position between the leaf spring and frame.
STEP 2. Remove the jounce bumpers from the frame and discard it.

STEP 3. Placing the two hex flange bolts into the jounce bumper holes. On the driver’s side, make sure the hard brake line is between the two upper bracket supports.

NOTE:
Maybe you need to pull out the harness bracket from the frame on some models.

STEP4. Install the upper brac ket to the frame and tighten it with the hexagon flange nut ( 20 of the Air spring bag ki t list)

NOTE:
The brake line must not contact or rub against the upper bracket.

PLACING THE ASSEMBLY AND INSTALLING THE UPPER BRACKET
STEP 1. Push the axle up so that the upper mounting bracket 1 of the Air spring bag kit list) can be bolted to the frame with the hex-cap screws ( 11 ) of the Air spring bag kit list).

INSTALLING THE LOWER BRACKET (2500HD MODEL)
STEP 1. On 2500HD models, there may be a small bracket with a nut on the driver’s (left) side of the axle, but no other wiring harness will be linked.
The bracket must be removed.
STEP 2. Install the hex-cap screw bolt into the center hole on the end of the lower bracket. Attach the nut with a nylon lock nut.

STEP 3. If the bolt heads on the lower bracket contact the axle, you will need to file or grind the top shock bracket to get the required clearance, so the bracket rests flat on the axle

NOTE: if the bolt head does not contact the axle tube, the shock mount will need to be filed or ground down to create space for the lower bracket to fit flat on the axle.

INSTALLING THE LOWER BRACKETS (3500HD MODEL)

STEP 1. Install the lower bracket shaft support block ( 4 of the Air spring bag kit list) to the lower bracket ( 2 of the Air spring bag kit list) and secure it securely.

STEP 2. For the driver (left) side, secure the emergency brake cable bracket ( 5 of the Air spring bag kit list) to the lower bracket ( 2 of the Air spring bag kit list).

NOTE:
The passenger’s (right) side spacer attaches the same way, but does not require the brake line bracket.
STEP 3. Install the lower brack et to the bumper impact plate and place the bolt ( 9 of the Air spring bag kit list) into the lower bracket

NOTE :
The legs on the lower bracket should be facing downwards .
STEP 4. Adjust the assembly so that the air spring is perpendicu lar to the bottom and top mounting brackets without twisting.
STEP 5. Install the axle strap ( 6 of the Air spring bag kit list) onto the axle. And connected to the lower bracket .

NOTE:

The installation methods of 3500D model and 2500HD model are the same.

INSTALLINGTHEHEATSHIELD (PASSENGER’S SIDE ONLY)

STEP 1. Install the heat shield to the exhaust port where it is closest to the passenger’s side air spring.

NOTE :
Must slide the air fine thermal sleeve over the qir line near the exhaust port.

INSTALLING THE AIR LINES

STEP 1. Cut the air line appropriately and push the hose into the fitting then pull back and make sure it’s locked in place

STEP 2 Install the inflation valve in a selected location, usually on the license at of plate the rear the vehicle.

CHECK AIRTIGHTNESS

• Put some air into the air spring bag, then spray a soapy solution on all connections and valves while checking for exiting air bubbles.

INSTALLATION COMPLETED
WARNING
Cancer and eproductiv e Harm
www.Pe5warnings.ca.gov

ABK ACHE0110-B-VLC

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