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3M 5 in Buffer 

Revision 10242011

3M 5 in Buffer 

Revision 10242011

Safety Precautions

1.  Read all instructions before using this tool. All operators must be fully 

trained in its use and aware of these safety rules. 

2.  The tool RPM should be checked on a regular basis to ensure proper 

operating speed.

3.  Make sure the tool is disconnected from the air supply. Select a suitable 

buff pad and secure it to the disc pad. Be careful to center the buff pad on 

the disc pad.

4.  Always wear required safety equipment when using this tool.

5.  When sanding/buffing always start the tool on the workpiece. This will 

prevent gouging due to excess speed of the buff pad. Stop air flow to the 

tool as it is removed from the workpiece.

6.  Always remove the air supply to the buffer before fitting, adjusting or 

removing the buff pad or disc pad.

7.  Always adopt a firm footing and grip and be aware of torque reaction 

developed by the buffer.

8.  Use only 3M approved spare parts.

9.  Always ensure the material being sanded is firmly fixed to avoid movement.

10.  Check hose and fittings regularly for wear. Do not carry the tool by its 

hose; always be careful to prevent the tool from being started when 

carrying the tool with the air supply connected.

11.  Dust can be highly combustible.

12.  If tool is serviced or rebuilt check to ensure that the maximum tool RPM is 

not exceeded and that there is no excessive tool vibration.

13.  Do not exceed maximum recommended air pressure. Use safety 

equipment as recommended.

14.  Prior to installing any sanding or polishing accessory, always check that 

it’s marked maximum operating speed is equal or higher than the rated 

speed of this tool.

15.  The tool is not electrically insulated. Do not use where there is a possibility 

of contact with live electricity, gas pipes, and/or water pipes.

16.  This tool is not protected against hazards inherent in grinding and cutting 

operations, and no such accessories should ever be attached.

17.  Take care to avoid entanglement with the moving parts of the tool with 

clothing, ties, hair, cleaning rags or loose hanging objects. If entangled, 

stop air supply immediately to avoid contact with moving tool parts.

18.  Keep hands clear of the spinning pad during use.

19.  If the tool appears to malfunction, remove from use immediately and 

arrange for service and repair.

20.  Do not allow the tool to free spin without taking precautions to protect any 

persons or objects from the loss of the abrasive or pad ruptures. 

21.  Immediately release the start handle in the event of any disruption 

of pressure; do not attempt to re-start until the disruption has been 

corrected. 

22.  When tool is not in use, store in a clean, dry environment free of debris.

23.  Recycle or dispose of tool according to Local, State, and Federal regulations.

3M™ Disc and Buffing Pads

3M disc and buff pads are perfectly mated for use on the 3M Buffer. 

Constructed from premium, industrial-quality materials and featuring a riveted 

fiberglass and steel hub with molded urethane, their durability and precise 

construction are the ideal complement to the performance of the 3M Buffer. 

See Product Configuration/Specifications table for the correct replacement pad 

for a particular model. The following chart is a sample of products offered.

Removing and Mounting

Disc and Buffing Pad to Buffer

Buff pad

1.  Disconnect air line from buffer.

2.  Peel the old buff pad from the disc pad, by lifting an edge and puling firmly 

upward.

3.  Inspect the Hook material on the disc pad for damage or debris clogging the 

hooks. Clean any debris or buffing compound from the disc pad surface.

4.  Attach a new buff pad to the disc pad, being careful to center it as well  

as possible.

5.  Apply hand pressure to engage the hooks and loops to firmly seat the  

buff pad.

Disc pad

1.  Disconnect air line from buffer.

2.  Remove old disc pad from buffer by inserting the wrench, supplied with the 

tool, between the rubber shroud and the disc pad. Use the wrench to secure 

the buffer spindle while turning the disc pad counter clockwise.

3.  After the old disc pad has been removed from the buffer, inspect the 

threaded hole in the spindle to ensure that the threads are free of debris 

and undamaged.

4.  Ensure that the phenolic washer is in place around the threaded shaft of the 

new disc pad.

5.  Secure the buffer spindle with the wrench and tighten the new disc pad 

securely to the tool.

 WARNING

An inadequately tightened disc pad could cause the threaded shaft to break 

causing damage to the tool and work piece and possible injury to the operator 

or bystanders.

Mounting rubber tool hanger accessory onto buffer

1.  Disconnect air line from buffer;

2.  Remove the existing two (2) M8 threaded plugs (item 24) with T-20 Torx 

driver*,

3.  Using the M8 threaded plugs (item 24), secure the hanger onto the tool 

using a T-20 Torx driver*.

  *Note: if necessary a 2.5 mm Allen wrench may be used in place of a T-20 

Torx driver.

Adding Optional Side-Handle

1.  Disconnect air line from buffer.

2.  Remove the existing M8 threaded plug (item 24) from the desired side of 

the buffer with a T-20 Torx driver*.

3.  Screw the M8 threaded side handle into the tool. Tighten securely by hand.

4.  If the side-handle is used with the tool hanger, the side-handle will directly 

replaces the existing M8 threaded plug (item 24).

Figure 1

Closed Loop Pipe System

Sloped in the direction of air flow

Drain Leg

Ball Valve

To Tool Station

Filter

Drain Valve

Regulator

Lubricator

Ball

Valve

Ball Valve

Air Flow

Air Dryer

Air Compressor

and Tank

Air Hose

To Coupler

at or near Tool

3

Abrasive Systems Division

3M Center

St. Paul, MN 55144-1000

www.3M.com/abrasives

© 3M 2011

3M, Hookit and Finesse-it are trademarks of 3M Company. 

34-8708-7757-7

Product Use: 

All statements, technical information and recommendations 

contained in this document are based up on tests or experience that 3M 
believes are reliable. However, many factors beyond 3M’s control can 
affect the use and performance of a 3M product in a particular application, 
including the conditions under which the 3M product is used and the time 
and environmental conditions in which the product is expected to perform. 
Since these factors are uniquely within the user’s knowledge and control, it 
is essential that the user evaluate the 3M product to determine whether it is 
fit for a particular purpose and suitable for the user’s method of application.

Warranty and Limited Remedy:

 3M warrants this tool against defects 

in workmanship and materials under normal operating conditions for one 
(1) year from the date of purchase. 3M MAKES NO OTHER WARRANTIES, 
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED 
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR 
PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF 
DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining 
whether the 3M tool is fit for a particular purpose and suitable for user’s 
application. User must operate the tool in accordance with all applicable 
operating instructions, safety precautions, and other procedures stated in 
the operating manual to be entitled to warranty coverage. 3M shall have no 
obligation to repair or replace any tool or part that fails due to normal wear, 

inadequate or improper maintenance, inadequate cleaning, nonlubrication, 
improper operating environment, improper utilities, operator error or misuse, 
alteration or modification, mishandling, lack of reasonable care, or due to 
any accidental cause. If a tool or any part thereof is defective within this 
warranty period, your exclusive remedy and 3M’s sole obligation will be, at 
3M’s option, to repair or replace the tool or refund the purchase price.

Limitation of Liability: 

Except where prohibited by law, 3M and seller will 

not be liable for any loss or damage arising from the 3M product, whether 
direct, indirect, special, incidental or consequential, regardless of the legal 
theory asserted, including warranty, contract, negligence or strict liability.

Submitting a Warranty Claim:

 Contact your dealer when submitting a 

warranty claim in accordance with the restrictions listed above. Please note 
that all warranty claims are subject to manufacturer’s approval. Be sure to 
keep your sales receipt in a safe place. This must be submitted when filing 
a warranty claim, within 1 year from the date of purchase. For additional 
assistance call 1-800-362-3550.

Product Repair after Warranty Has Expired:

 Repair of 3M Abrasive Power 

tools that are not under warranty is available through 3M or a 3M Authorized 
Tool Repair Representative. Contact your 3M Abrasive Power Tool Distributor 
for details, or call 1-800-362-3550.

Summary of Contents for 28392

Page 1: ...ir source before servicing inspecting maintaining cleaning and before changing abrasive product Prior to use inspect abrasive product and accessories for possible damage If damaged replace with new abrasive product and accessories available from 3M Only use accessories supplied or recommended by 3M Never allow this tool to be used by children or other untrained people Do not leave an unattended to...

Page 2: ...culate the oil If the tool is used frequently lubricate it on a daily basis or lubricate it if the tool starts to slow or lose power It is recommended that the air pressure at the tool be 6 2 bar 90 psig while the tool is running so the maximum RPM is not exceeded The tool can be run at lower pressures but should never be run higher than 6 2 bar 90 psig If run at lower pressure the performance of ...

Page 3: ...t the phenolic washer is in place around the threaded shaft of the new disc pad 5 Secure the buffer spindle with the wrench and tighten the new disc pad securely to the tool WARNING An inadequately tightened disc pad could cause the threaded shaft to break causing damage to the tool and work piece and possible injury to the operator or bystanders Mounting rubber tool hanger accessory onto buffer 1...

Page 4: ... Name 34870877577 indd Structure NA Date 10 28 11 Printed Colors Front Printed Colors Back Match Colors This artwork has been created as requested by 3M 3M is responsible for the artwork AS APPROVED and assumes full responsibility for its correctness ...

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