McGRAW 58648 6 Inch Dual Action Air Sander Owner’s Manual

June 12, 2024
McGRAW

McGRAW 58648 6 Inch Dual Action Air Sander

McGRAW-58648-6-Inch-Dual-Action-Air-Sander-image

Product Information

The product is a tool with the model number 58648. It comes with an owner’s manual and safety instructions. The manual provides information on product assembly, operation, maintenance, and warranty. It also includes safety precautions and warning symbols to ensure user safety.

For any technical questions or assistance, customers can visit the website at http://www.harborfreight.com or contact the technical support team via email at [email protected].
In case of any issues during unpacking or if the product is damaged, customers can call 1-888-866-5797 for immediate assistance.

Product Usage Instructions

Setup

  1. Before using the tool, read the entire manual carefully.
  2. Ensure that the product is intact and undamaged during unpacking. If there are any issues or missing parts, contact customer support immediately.

Operation

Important Safety Instructions:

These instructions are related to the risk of fire, electric shock, or injury to persons. To reduce these risks, follow all instructions before using the tool.

General Safety Precautions:

  • Keep the work area clean and well-lighted.
  • Do not operate the tool in explosive atmospheres or near flammable liquids, gases, or dust.
  • Keep bystanders, children, and visitors away from the work area while operating the tool.
  • Avoid distractions that may result in the loss of control of the tool.

Work Area Safety:

Cluttered benches and dark areas increase the risks of electric shock, fire, and injury to persons. Ensure that the work area is clean, well-lit, and free from any potential hazards.

Explosive Atmosphere Safety:

Do not use the tool in explosive atmospheres where flammable liquids, gases, or dust are present. The tool can create sparks that may ignite the dust or fumes, causing a hazardous situation.

For any technical questions or further assistance, customers can call 1-888-866-5797.

Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference

Visit our website at: http://www.harborfreight.com
email our technical support at: [email protected]

When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, please call 1-888-866-5797 as soon as possible.

Copyright© 2022 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Because of continuing improvements, actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included

WARNING Read this material before using this product. Failure to do so can result in serious injury. Save this Manual.

WARNING SYMBOLS AND DEFINITIONS

Warning s ymbols   and Definitions

 | This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
DANGER| Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING| Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION| Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTE
CAUTION|

Addresses practices not related to personal injury.

IMPORTANT SAFETY INSTRUCTIONS

INSTRUCTIONS PERTAINING TO A RISK OF FIRE,
ELECTRIC SHOCK, OR INJURY TO PERSONS
WARNING – When using tools, basic precautions should always be followed, including the following:

General

To reduce the risks of electric shock, fire, and injury to persons, read all the instructions before using the tool.

Work Area

  1. Keep the work area clean and well lighted. Cluttered benches and dark areas increase the risks of electric shock,  fire, and injury to persons.
  2. Do not operate the tool in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. The tool is able to create sparks resulting in the ignition of the dust or fumes.
  3. Keep bystanders, children, and visitors away while operating the tool. Distractions are able to result in the loss of control of the tool.

Personal Safety

  1. Stay alert. Watch what you are doing and use common sense when operating the tool. Do not use the tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the tool increases the risk of injury to persons.
  2. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair increases the risk of injury to persons as a result of being caught in moving parts.
  3. Avoid unintentional starting. Be sure the switch is off before connecting to the air supply. Do not carry the tool with your finger on the switch or connect the tool to the air supply with the switch on.
  4. Remove adjusting keys and wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool increases the risk of personal injury.
  5. Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations.
  6. Use safety equipment. A dust mask, non-skid safety shoes and a hard hat must be used for the applicable conditions.
  7. Always wear eye protection. Wear ANSI-approved safety goggles.
  8. Always wear hearing protection when using the tool. Prolonged exposure to high intensity noise is able to cause hearing loss.
  9. Avoid body contact with grounded surfaces such as pipes, radiators, rangesand refrigerators. There is an increased risk of electric shock if your body is grounded.

Tool Use and Care

  1. Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against the body is unstable and is able to lead to loss of control.
  2. Do not force the tool. Use the correct tool for the application. The correct tool will do the job better and safer at the rate for which the tool is designed.
  3. Do not use the tool if the switch does not turn the tool on or off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.
  4. Disconnect the tool from the air source before making any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the tool unintentionally. Turn off and detach the air supply, safely discharge any residual air pressure, and release the throttle and/or turn the switch to its off position before leaving the work area.
  5. Store the tool when it is idle out of reach of children and other untrained persons. A tool is dangerous in the hands of untrained users.
  6. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that affects the tool’s operation. If damaged, have the tool serviced before using. Many accidents are caused by poorly maintained tools. There is a risk of bursting if the tool is damaged.
  7. Use only accessories that are identified by the manufacturer for the specific tool model. Use of an accessory not intended for use with the specific tool model, increases the risk of injury to persons.

Service

  1. Tool service must be performed only by qualified repair personnel.

  2. When servicing a tool, use only identical replacement parts.
    Use only authorized parts.

  3. Use only lubricants supplied with the tool or specified by the manufacturer.

Air Source

  1. Never connect to an air source that is capable of exceeding 200 psi. Over pressurizing the tool may cause bursting,abnormal operation, breakage of the tool or serious injury to persons. Use only clean, dry, regulated compressed air at the rated pressure or within the rated pressure range as marked on the tool.
    Always verify prior to using the tool that the air source has been adjusted to the rated air pressure or within the rated air-pressure range.

  2. Never use oxygen, carbon dioxide, combustible gases or any bottled gas as an air source for the tool. Such gases are capable of explosion and serious injury to persons.

SAVE THESE INSTRUCTIONS.
Symbols and Specific Safety Instructions

Symbol Definitions

McGRAW-58648-6-Inch-Dual-Action-Air-Sander-fig11

Specific Safety Instructions

  1. This air tool is intended to function as a sander. Read all safety warnings, instructions, illustrations and specifications provided with this air tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

  2. Operations such as grinding, wire brushing, polishing, or cutting-off are not recommended to be performed with this air tool. Operations for which the air tool was not designed may create a hazard and cause personal injury.

  3. Do not use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your air tool, it does not assure safe operation.

  4. The rated speed of the accessory must be at least equal to the maximum speed marked on the air tool. Accessories running faster than their RATED SPEED can break and fly apart.

  5. The outside diameter and the thickness of your accessory must be within the capacity rating of your air tool. Incorrectly sized accessories cannot be adequately guarded or controlled.

  6. The arbor size of wheels, flanges, backing pads or any other accessory must properly fit the spindle of the air tool. Accessories with arbor holes that do not match the mounting hardware of the air tool will run out of balance, vibrate excessively and may cause loss of control.

  7. Do not use a damaged accessory. Before each use inspect the accessory for tears and the backing pad for cracks, tears or excess wear. If air tool or accessory is dropped, inspect for damage or install an undamaged accessory.

  8. Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various operations. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtering out particles generated by your operation. Prolonged exposure to high intensity noise may cause hearing loss.

  9. Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpiece or of a broken accessory may fly away and cause injury beyond immediate area of operation.

  10. Hold power tool by insulated gripping surfaces only, when performing an operation where the accessory may contact hidden wiring. An accessory contacting a ″live″ wire may make exposed metal parts of the power tool ″live″ and shock the operator.

  11. Never lay the air tool down until the accessory has come to a complete stop. The spinning accessory may grab the surface and pull the air tool out of your control.

  12. Do not run the air tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.

  13. Attach all accessories properly to the tool before connecting the air supply. A loose accessory may detach or break during operation.

  14. Obey the manual for the air compressor used to power this tool.

  15. Install an in-line shutoff valve to allow immediate control over the air supply in an emergency, even if a hose is ruptured.

  16. Maintain labels and nameplates on the tool. These carry important safety information.
    If unreadable or missing, contact Harbor Freight Tools for a replacement.

  17. Avoid unintentional starting. Prepare to begin work before turning on the tool.

  18. This product is not a toy. Keep it out of reach of children.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush
or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel’s movement at the point of pinching. Abrasive wheels
may also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.

  1. Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken.
  2. Never place your hand near the rotating accessory. Accessory may kickback over your hand.
  3. Do not position your body in the area where power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
  4. Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
  5. Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

Safety Warnings Specific for Sanding Operations

Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations when selecting sanding paper. Larger sanding paper extending beyond the sanding pad presents a laceration hazard and may cause snagging, tearing of the disc or kickback.

Vibration Precautions

This tool vibrates during use. Repeated or long-term exposure to vibration may cause temporary or permanent physical injury, particularly to the hands, arms and shoulders. To reduce the risk of vibration-related injury:

  1. Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical check-ups to ensure medical problems
    are not being caused or worsened from use. Pregnant women or people who have impaired blood circulation to the hand, past hand injuries, nervous system disorders, diabetes, or Raynaud’s Disease should not use this tool. If you feel any symptoms related to vibration (such as tingling, numbness, and white or blue fingers), seek medical advice as soon as possible.

  2. Do not smoke during use. Nicotine reduces the blood supply to the hands and fingers, increasing the risk of vibration-related injury.

  3. Wear suitable gloves to reduce the vibration effects on the user.

  4. Use tools with the lowest vibration when there is a choice.

  5. Include vibration-free periods each day of work.

  6. Grip tool as lightly as possible (while still keeping safe control of it). Let the tool do the work.

  7. To reduce vibration, maintain tool as explained in this manual. If abnormal vibration occurs, stop immediately.

Functional Description

Specifications
Maximum Air Pressure 90 PSI
Air Inlet 1/4″ NPT
Maximum Speed* 10,000 RPM
Max Air Consumption (No Load) 22 SCFM (3.1 CFM @ 90 PSI)
Air Consumption at Load 20 SCFM (2.9 CFM @ 90 PSI)
  • Maximum speed at stated maximum air pressure. Excess air pressure is hazardous and may cause the tool to exceed stated maximum speed.
Components and Controls

McGRAW-58648-6-Inch-Dual-Action-Air-Sander-fig5

Initial Set Up

Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product.
Note: For additional information regarding the parts listed in the following pages, refer to the Assembly Diagram near the end of this manual.
Note: This air tool may be shipped with a protective plug covering the air inlet. Remove this plug before set up.

Air Supply Setup

WARNING
TO PREVENT SERIOUS INJURY FROM EXPLOSION:
Use only clean, dry, regulated, compressed air to power this tool. Do not use oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power source for this tool.

  1. Incorporate a filter, regulator with pressure gauge, in-line shutoff valve, and quick coupler for best service, as shown in Figure A on page 10 and Figure B
    on page 11. An in-line shutoff ball valve is an important safety device because it controls the air supply even if the air hose is ruptured. The shutoff valve should be a ball valve because it can be closed quickly.
    Note: If an automatic oiler system is not used, add a few drops of Pneumatic Tool Oil to the airline connection before operation. Add a few more drops after each hour of continual use.

  2. Attach an air hose to the compressor’s air outlet. Connect the
    air hose to the air inlet of the tool.
    Other components, such as a coupler plug and quick coupler, will make operation more efficient, but are not required.
    WARNING! TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
    Do not install a female quick coupler on the tool. Such a coupler contains an air valve that will allow the air tool to retain pressure and operate accidentally after the air supply is disconnected.
    Note: Air flow, and therefore tool performance, can be hindered by undersized air supply components.

  3. Turn the tool’s throttle or switch to the off position; refer to Operation section for description of controls.

  4. Close the in-line shutoff valve between the compressor and the tool.

  5. Turn on the air compressor according to the manufacturer’s directions and allow it to build up pressure until it cycles off.

  6. Adjust the air compressor’s output regulator so that the air output is enough to properly power the tool, but the output will not exceed the tool’s maximum air pressure at any time. Adjust the pressure gradually, while checking the air output gauge to set the right pressure range.

  7. Inspect the air connections for leaks. Repair any leaks found.

  8. If the tool will not be used at this time, turn off and detach the air supply and safely discharge any residual air pressure to prevent accidental operation.
    Note: Residual air pressure should not be present after the tool is disconnected from the air supply. However, it is a good safety measure to attempt to discharge the tool in a safe fashion after disconnecting to ensure that the tool is disconnected and unpowered.

Figure A: Portable Air Supply SetupMcGRAW-58648-6-Inch-Dual-Action-Air-
Sander-fig6

  Description Function
A Air Hose Connects air to tool
B Filter Prevents dirt and condensation from damaging tool or workpiece
D Regulator Adjusts air pressure to tool
E Coupler and Plug Provides quick connection and release
C Air Cleaner / Dryer ***** Prevents water vapor from damaging workpiece
F Air Adjusting Valve ***** For fine tuning airflow at tool

Figure B: Stationary Air Supply SetupMcGRAW-58648-6-Inch-Dual-Action-Air-
Sander-fig7

  Description Function
A Vibration Pads For noise and vibration reduction
B Anchor Bolts Secures air compressor in place
C Ball Valve Isolates sections of system

for maintenance

D| Isolation Hose| For vibration reduction
E| Main Air Line – 3/4″ min.| Distributes air to branch lines
F| Ball Valve| To drain moisture from system
G| Branch Air Line -1/2″ min.| Brings air to point of use
H| Air Hose| Connects air to tool
 | Description| Function
---|---|---
I| Filter| Prevents dirt and condensation

contamination

J| Regulator| Adjusts air pressure to tool
K| Lubricator *****| For air tool lubrication
L| Coupler and Plug| Provides quick connection

and release

M| Leader Hose | Increases coupler life
N| Air Cleaner / Dryer
| Prevents moisture contamination
O| Air Adjusting Valve *****| For fine tuning airflow at tool

Operating Instructions

Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under subheadings therein before set up or use of this product.
Inspect tool before use, looking for damaged, loose, and missing parts. If any problems are found, do not use tool until repaired.

Tool Set Up

WARNING
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:

Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the trigger before performing any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY:
Do not adjust or tamper with any control or component in a way not specifically explained within this manual. Improper adjustment can result in tool failure or other serious hazards.

Installing Backing Pad and Sanding Disc

The Sander features a locking spindle for toolless Backing Pad Installation, or the Backing Pad can be installed using the included 16 mm Wrench.

  1. For toolless Backing Pad installation, rotate the Drive Spindle so the hole in the Spindle is lined up with the shaft on the Set Plate.

  2. Push the Set Plate forward to insert the shaft on the Set Plate into the hole on the Drive Spindle, keeping it from freely turning while installing the Backing Pad.McGRAW-58648-6-Inch-Dual-Action-Air-Sander-fig8

  3. Thread the Backing Pad securely into the Drive Spindle while holding the Spindle in place by hand, turning the Pad clockwise. Make sure the Backing Pad is attached tightly.

  4. Once the Backing Pad is securely in place, push the Set Plate back to disengage the shaft on the Set Plate from the Drive Spindle, allowing the Drive Spindle to freely turn.
    Note: Ensure that the Set Plate is fully disengaged from the Drive Spindle prior to use. If the tool is operated with the Set Plate engaged with the Drive Spindle, the Sander will spin rather than randomly orbit.

  5. Alternately, the Backing Pad can be installed using the supplied Wrench. Hold the Drive Spindle stationary with the Wrench and thread the Backing Pad securely into the Drive Spindle, turning the Pad clockwise.

  6. The Sander ONLY uses 6″ diameter, PSA (Pressure Sensitive Adhesive) sanding discs (sold separately). Firmly attach the sanding disc to the Backing Pad.McGRAW-58648-6-Inch-Dual-Action-Air-Sander-fig9

Workpiece and Work Area Set Up

  1. Designate a work area that is clean and well-lit. The work area must not allow access by children or pets to prevent distraction and injury.

  2. Route the air hose along a safe path to reach the work area without creating a tripping hazard or exposing the air hose to possible damage. The air hose must be long enough to reach the work area with
    enough extra length to allow free movement while working.

  3. Secure loose workpieces using a vise or clamps (not included) to prevent movement while working.

  4. There must not be hazardous objects (such as utility lines or foreign objects) nearby that will present a hazard while working.

General Operating Instructions

  1. If an automatic oiler is not used, add a few drops of Pneumatic Tool Oil to the airline connection before use. Add a few drops more after each hour of continual use.

  2. Wipe the work surface clean of all dirt and debris, especially that of previous courser sanding sessions, which will scratch the surface of a finer grit sanding session.

  3. Attach the desired grit sanding disc (sold separately) onto the Backing Pad.

  4. Attach the air supply.

  5. Grip the Handle and depress the Trigger to start the tool. The speed of the Sander may be varied by turning the Speed Control. Allow the tool to reach the intended speed before sanding.
    CAUTION! Do not allow free, no-load rotating at high speed to avoid possible injury or damage to the tool.

  6. Keep heavy pressure off of the Sander when operating. Allow the sanding disc to do the work.

  7. Move the Sander in a uniform pattern up and down or side to side to ensure even sanding.
    Note: If the Sander creates swirls when it contacts the workpiece, disconnect the air supply and verify that the Set Plate is not engaging with the Drive Spindle.

  8. Periodically, stop the Sander and check for possible disc wear. Replace used or worn sanding discs when necessary.

  9. If the tool requires more force to accomplish the task, verify that the tool receives sufficient, unobstructed airflow (CFM) and increase the pressure (PSI) output of the regulator up to the maximum air pressure rating of this tool.
    CAUTION! TO PREVENT INJURY FROM TOOL OR ACCESSORY FAILURE:
    Do not exceed the tool’s maximum air pressure rating.
    If the tool still does not have sufficient force at maximum pressure and sufficient airflow, then a larger tool may be required.

  10. To prevent accidents, after use, release the Trigger, detach the air supply and then safely discharge any residual air pressure in the tool. Clean external surfaces of the tool with a clean, dry cloth. Then store the tool indoors out of children’s reach.

User-Maintenance Instructions

Procedures not specifically explained in this manual must be performed only by a qualified technician.

warning
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the trigger before performing any inspection, maintenance, or cleaning procedures.
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise, vibration, or leaking air occurs, have the problem corrected before further use.
TO PREVENT SEROUS INJURY FROM EXPLOSION:
Lubricate the tool only with specified lubricants. Lubricate the air inlet using only pneumatic tool oil. Other lubricants may damage the mechanism and may be highly flammable, causing an explosion.

Cleaning, Maintenance, and Lubrication

Note: These procedures are in addition to the regular checks and maintenance explained as part of the regular operation of the air-operated tool.

  1. BEFORE EACH USE, inspect the general condition of the tool. Check for:

    • loose hardware or housing
    • misalignment or binding of moving parts
    • cracked or broken parts
    • any other condition that may affect its safe operation.
  2. Daily – Air Supply Maintenance:
    Every day, maintain the air supply according to the component manufacturers’ instructions. Maintain the lubricator’s oil level.
    Drain the moisture filter regularly. Performing routine air supply maintenance will allow the tool to operate more safely and will also reduce wear on the tool.

  3. Quarterly (every 3 months) –
    Tool Disassembly, Cleaning, and Inspection:
    Have the internal mechanism cleaned, inspected, and lubricated by a qualified technician. If the vanes need replacement, replace them all as a set.
    Note: Ensure that the Set Plate is fully disengaged from the Drive Spindle prior to use. If the tool is operated with the Set Plate engaged with the Drive Spindle, the Sander will spin rather than randomly orbit.

Troubleshooting

problem possible causes Likely Solutions
Decreased output 1. Not enough air pressure and/ or air flow.


2. Obstructed Trigger.


3. Incorrect lubrication or not enough lubrication.

4. Blocked air inlet screen.

5. Air leaking from loose housing.


6. Mechanism contaminated.




7. Vane wear or damage.

| 1. Check for loose connections and make sure that air supply is providing enough air flow (CFM) at required pressure (PSI) to the tool’s air inlet. Do not exceed maximum air pressure.

2. Clean around Trigger to ensure free movement.

3. Lubricate using air tool oil according to directions.

4. Clean air inlet screen of buildup.

5. Make sure housing is properly assembled and tight.

6. Have qualified technician

clean and lubricate mechanism. Install in-line filter in air supply as stated in Air Supply Setup on page 9.

7. Replace all vanes as a set.

Severe air leakage. (Slight air leakage

is normal, especially on older tools.)

| 1. Cross-threaded housing components.



2. Loose housing.



3. Damaged valve or housing.

4. Dirty, worn or damaged valve.

| 1. Check for incorrect alignment and uneven gaps. If cross-

threaded, disassemble and replace damaged parts before use.

2. Tighten housing assembly. If housing cannot tighten properly, internal parts may be misaligned.

3. Replace damaged components.

4. Clean or replace valve assembly.

Housing heats during use.| 1. Incorrect lubrication or not enough lubrication.

2. Worn parts.

| 1. Lubricate using air tool oil according to directions.

2. Have qualified technician inspect internal mechanism and replace parts as needed.

Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect air supply before service.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. Specify UPC 193175443250 when ordering parts.

Parts List and Diagram

Parts List

part| Description| Qty|  | part| Description| Qty
---|---|---|---|---|---|---
1| Housing| 1| 29| Front/End Cover| 2
2| Housing Cover| 1| 30| Cylinder| 1
3| Top Cover| 1| 31| Set Pin| 1
4| Front Grip| 1| 32| O-Ring| 1
5| Spring| 1| 33| Rotor| 1
6| O-Ring| 1| 34| Rotor Blade (Vane)| 5
7| Valve Stem| 1| 35| Work Spindle| 1
8| O-Ring| 1| 36| Woodruff Key| 1
9| O-Ring| 1| 37| Gasket| 1
10| O-Ring| 1| 38| Front Cover| 1
11| Valve Seat| 1| 39| Set Screw| 2
12| Bracket| 1| 40| Set Screw| 2
13| Screw| 1| 41| Washer| 4
14| Nut| 1| 42| Balancer| 1
15| Trigger| 1| 43| Screw| 1
16| Washer| 1| 44| Set Screw| 1
17| Nut| 1| 45| Set Screw| 1
18| O-Ring| 4| 46| Washer| 1
19| Air Regulator| 1| 47| Bearing| 1
20| Pin| 1| 48| Washer| 1
21| Air Regulating Knob| 1| 49| E-Ring| 1
22| Screw| 1| 50| Set Plate| 1
23| O-Ring| 1| 51| Drive Spindle| 1
24| Air Inlet| 1| 52| Washer| 1
25| Washer| 1| 53| Lever| 1
26| Screw| 1| 54| Screw| 1
27| E-Ring| 1| 55| Backing Pad| 1
28| Bearing| 2| 56| Wrench| 1

Assembly DiagramMcGRAW-58648-6-Inch-Dual-Action-Air-Sander-
fig10

Limited 90 Day Warranty

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special or consequential damages arising from the use of our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our inspection verifies the defect, we will either repair or replace the product at our election or we may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797

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