Buffer 8125 Owner s Manual

3M Buffer 8125 Owner s Manual A table of contents: A. SAFETY INFORMATION 1 B. OPERATING INSTRUCTION 4 C. SPARE PARTS INFORMATION (exploded view) 5 D. DISASSEMBLY METHOD 7 E. ASSEMBLY METHOD 10 F. GUIDELINE FOR PARTS EXCHANGE 11 G. PARTS DEPO AND REPAIR SERVICE 12 Appendix. TROUBLESHOOTING CHART A. SAFETY INFORMATION Please read, understand, and follow all safety information contained in these instructions prior to the use of this tool. Retain these instructions for future reference. Intended Use: This tool is designed as a buffing solution for repairing automobile bodies and parts, clear coat painting on metal, fiber reinforced plastic (RFP) and wood. It should not be operated in water or in an excessive wet application. Explanation of Signal Word Consequences WARNING: CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in death or serious injury and/or property damage. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury and/or property damage. 1

WARNING To reduce the risks associated with excessive pneumatic pressure, noise, vibration, eye/skin irritation, and tool breakage during the use of this product: Read and follow the safety information contained in these instructions prior to the use of this tool. Retain these instructions for future reference. Always wear protection for eyes* and ears while operating this product. Follow ANSI Z87.1or local/national standards for eyewear and other personal protective equipment requirements. Never exceed maximum input pressure of 90 PSI (6.2 bar). Never point this tool in the direction of your body or that of another person. If you notice any abnormal noise or vibration when operating the product, immediately discontinue its use and return to the manufacturer for service or repair. Refer to warranty instructions. Discontinue use of the tool if abnormal hand/wrist discomfort is experienced. If discomfort continues seek medical attention. Use dust capture or local exhaust as stated in the MSDS. Use care in fastening Hookit Disc Backup Pad to ensure that it is securely attached to the tool before use. Make sure the tool is disconnected from the air source before cleaning, inspecting, servicing or changing any parts. CAUTION To reduce the risk of skin abrasion, cuts or burns, do not touch rotating parts during operation for any reason. CAUTION Improper use can cause the tool to break apart and may cause injury to operators and bystanders. Never free spin the tool or allow it to be started unintentionally. Never operate the tool without all guards or safety features in place and in proper working order. Inspect backup pad and replace if unusual wear is noticed. Replace backup pad at normal intervals according to instructions. Motor RPM 10,500 0.472 in (12 mm) Orbit Dia. Air Flow Air Pressure 380 LPM (13.4 SCFM) 90 PSI (6.2 bar) Weight Pad Size Noise Vibration Length Height 2.09 lbs (0.95 kg) 2.83 in (72 mm) 80 dba 1.34 1.46 m/s 2 9 1/8 in (232 mm) 3 5/8 in (93 mm) *For information on eye and face protection, see ANSI Standard Z87.1, Practice for Occupational and Educational Eye and Face Protection. Available from American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018. +1 (212) 642-4900. 2

HOW TO HANDLE Check for loose screws and missing parts before operation. Connect air hoses after cleaning all appropriate fittings to reduce contamination from foreign objects, dust, sand, etc. During inspection of each part make sure to detach air hoses. When connecting air hoses with an air tool, do not squeeze the trigger. Do not throw the tool. Do not drag the tool while holding the air hose. Do not use the tool in a non-recommended application. Operation without lubrication will cause rapid wear on the motor and can lead to rotation failure. Prior to storing, lubricate the tool at a low speed to spread oil inside the motor. Select a dry and safe place for storage. Frequent cleaning of air connections will reduce contamination of the motor. Abnormal noise or vibration during operation indicates an immediate need for tool repair. If repair is necessary notify sales office or repair center from where you purchased this tool regarding inspection and repair. Use only recommended replacement parts. PRIOR TO OPERATION Keep the work area clean, orderly and free of obstacles. Inspect for loose parts (tool and attachment) prior to operation. Confirm that air pressure does not exceed 90 PSI / 6.2 bar. When connecting to an air hose ensure a secure connection that will not loosen during operation. Center the buffing pad on the backup pad. Press the buffing pad securely into place. START AND STOP Place the tool in contact with the work piece. Start the tool by pressing the lever/trigger lightly. Keep the tool flat while in contact with the work surface. Slow the tool down before removing from the work piece. Detach air hose when the tool is not in use. Detach the tool from the air source when transporting. DURING OPERATION Speed can be adjusted from low to high with the speed controller knob. Do not apply excessive force to the tool. Excessive force can lead to inefficient tool performance and decreased tool life. B. OPERATING INSTRUCTIONS PRIOR TO OPERATION Make sure the workplace is neat and is in appropriate condition. Check for loose parts (pad, etc.). Make sure the air pressure is appropriate less than 90 PSI (6.2 bar). When a coupler or extension is used, be sure it is tight so that it will not come loose because of vibration, etc. START OF OPERATION The tool starts when the lever is pressed. It stops when the lever is released. When you work, be sure to operate the lever after the buffing pad contacts the work surface. 3

PRIOR TO OPERATION AND AFTER OPERATION Be sure to oil the tool motor through the air supply opening. After oiling, run the tool at low speed. When not in production, remove air hose and store in safe, dry place. 4

Parts Page 3 4 1 2 5 6 10 11 7 8 9 12 13 22 29 14 21 15 31 16-4 16-3 16-1 16-2 23 30 16-3 24 32 17 25 18 19 26 27 33 20 28 5

C. SPARE PARTS INFORMATION - continued ITEM No. PART No. DESCRIPTION QTY 1 410320 Spring pin ( 3 x 20 ) 1 2 22975A Valve lever 1 3 OV12 Snap ring (OV-12) 1 4 20820 Valve pin sleeve 1 5 KS07 O ring (KS-7) 1 6 KS02 O ring (KS-2) 1 7 20823 Valve 1 8 25814 Valve spring 1 9 229013A Body 1 10 22952 Silencer 2 11 22953 Silencer cap 1 12 130512 Screw (M5 x 12 ) 1 13 3805 Washer (M5) 1 14 6000ZZ Ball bering (6000ZZ) 1 15 207083 U-baring case 1 16 216031A Cylinder set 1 set 16-1 216031 Cylinder set 1 16-2 KS05 O-ring (KS-5) 1 16-3 410308 Spring pin ( 3 x 8 ) 2 16-4 410304 Spring pin ( 3 x 4 ) 1 17 22621 Rotor 1 18 22622 Vane 8 19 22342 L-bearing case 1 20 6300ZZ Ball bearing (6300ZZ) 1 21 22340 Shaft with head 1 22 510313 H/R key ( 13 x 3 ) 1 23 20913 Retainer bolt 1 24 6001DD Ball bearing (6001DD) 2 25 22309 18 felt ring 1 26 22308 Dust seal 1 27 22341 Pad retainer 1 28 OV28 Snap ring (OV-28) 1 29 22907 Body gasket 1 30 22951 Base ring 1 31 22908 Dust packing 1 32 150412 Screw (M4 x 12) 4 33 * 3 pad 1 * 3M Disc Pad 00-51111-55764-8 Special Tools for repair operation ITEM No. PART No. DESCRIPTION QTY 1 ST005 6200 bearing punch 1 2 ST007 3 mm pin punch 1 3 ST008 945A shaft bearing puller 1 4 ST024 Bearing puller stand 1 5 ST502 Snap ring pliers 1 6

D. DISASSEMBLY METHOD CAUTION Remove the air hose before disassembling the tool. Disassembly while the air hose is still attached is very dangerous. 1. Remove pad holder. Use the attached spanner to remove the pad. Secure the pad retainer (27) and rotate the pad (33) in the counterclockwise direction. 2. Removing the Base Ring Remove four screws (32) and remove the base ring (30). Remove the body gasket (29). 3. Disassembly of the Motor Remove the motor assembly. Remove the screw (12) from the upper end of the motor assembly. 7 Remove the ball bearing as well as the U-bearing case (14 & 15).

Remove the ball bearing (14) using a special puller. Remove the cylinder set (16). Remove the vanes (18). Remove the ball bearing (14) using a special puller. Remove the H/R key (22). The L-bearing case and the ball bearing (19 & 20) are removed using a plastic hammer so that the shaft (21) will not be damaged. The ball bearing (20) is removed from the L-bearing case (19) using a special puller. Remove the snap ring (28) from the shaft assembly. Remove the pad retainer assembly using a special tool. Clamp the pad retainer (27) in a vise and remove the retainer bolt. 8

Remove the ball bearing (24) using a special tool. Remove the dust seal (26) and the 18 Dia felt ring (25). 4. Disassembly of the Valve Remove the dust seal (26) and f18 diameter felt ring (25). Using a snap ring tool, remove the snap ring (3). Remove the valve pin sleeve and the O-ring KS-7 (4 & 5) together with the O-ring KS-2 and the valve (6 & 7). Be careful not to lose the valve spring. Remove the O-ring KS-2 and the valve (6 & 7) from the valve pin sleeve and the O-ring KS-7 (4 & 5). Remove the O-ring KS-7 (5) out from the valve pin sleeve (4). Remove the O-ring KS-2 (6) from the valve (7). 9

5. Special tools for the repair operation (to help the disassembly) ST502 ST024 1) ST005 6200 bearing punch 2) ST007 3 mm pin punch 3) ST008 945A shaft bearing puller 4) ST024 Bearing puller stand 5) ST502 Snap ring pliers ST007 ST005 ST008 E. ASSEMBLY METHOD Before assembly, inspect each part for wear or damage. Use only recommended spare parts. Apply oil lightly on each part. Exchange damaged O rings. Do not omit the O rings. Apply grease (general purpose grease). Assemble the parts carefully in the reverse order from the disassembly. Assemble the motor, paying special attention to the required upper and lower clearance. When assembly is finished, check for loose screws, etc. Pour a few drops of air tool oil into the air inlet part, and run at a slow speed. Check that it rotates freely. 10

F. GUIDELINE FOR PARTS REPLACMENT PARTS No. CODE ITEM WHEN TO REPLACE 1 410320 Spring pin ( 3 x 20 ) When the hinge is worn excessively 2 22975A Valve lever When the pin retainer is worn 3 OV12 Snap ring (OV-12) 4 20820 Valve pin sleeve When the slide is worn 5 KS07 O ring (KS-7) When it is damaged and causes a leak 6 KS02 O ring (KS-2) When it is damaged and causes a leak 7 20823 Valve When it leaks 8 25814 Valve spring When it is bent or just doesn t work 9 229013A Body 10 22952 Silencer 11 22953 Silencer cap 12 130512 Screw (M5 x 12) 13 3805 Washer (M5) 14 6000ZZ Ball bering (6000ZZ) When it has excessive play or is locked 15 207083 U-baring case When the bearing retainer is damaged 16 216031A Cylinder set 16-1 216031 Cylinder When the sealing surface is damaged or worn 16-2 KS05 O-ring (KS-5) When it is damaged and causes a leak 16-3 410308 Spring pin ( 3 x 8 ) 16-4 410304 Spring pin ( 3 x 4 ) 17 22621 Rotor When it is worn, causing leaks or excessive vibration 18 22622 Vane When the width becomes -0.5 less than the original size (0.9); when the length becomes -0.25 less than the original size (22) 19 22342 L-bearing case When the bearing is loose or other damage is found 20 6300ZZ Ball bearing (6300ZZ) When it has excessive play or is locked 21 22340 Shaft with head When the joint with the rotor is worn and vibration is excessive 22 510313 H/R key ( 13 x 3 ) When vibration is excessive 23 20913 Retainer bolt 24 6001DD Ball bearing (6001DD) When is has excessive play or is locked 25 22309 18 felt ring Change every time the tool is serviced 26 22308 Dust seal 27 22341 Pad retainer When the bearing surface is worn or the screw holes are stripped 28 OV28 Snap ring (OV-28) 29 22907 Body gasket Replace when the tool is serviced 30 22951 Base ring When damage has occurred to the OD 31 22908 Dust packing 32 150412 Screw (M4 x 12) 33 * 3 pad When bent, when vibration is excessive or when the OD is badly damaged * 3M Disc Pad 00-51111-55764-8 11

G. PARTS DEPO AND REPAIR SERVICE Repair services after Warranty period & Parts supply contact Tool Warehouse Inc. Contact: Jeff Houk 3410 East 42 nd Street, Minneapolis, MN 55406-3333 Phone: 1-612-722-4260 Fax: 1-612-722-3415 e-mail: sales@toolwarehouseinc.com 3M Industrial Business Quality Direct / abrasives Phone: 1-800-362-3550 (USA only) 3M Industrial Business Customer Response Center 900 Bush Avenue, Building 21-1W-10 St. Paul, MN 55106 Phone: 1-866-279-1235 www.3m.com/abrasives 3M 3M 2008 2007 12

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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, non-lubrication, 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 One (1) year from the date of purchase. Product Repair after Warranty Has Expired 3M does not offer repair service for product out of warranty. 3M Abrasive Systems Division 3M Center, Building 223-6N-02 St. Paul, MN 55144-1000 www.3m.com/abrasives 14 3M 2008 3M and Hookit are trademarks of 3M Company 34-8701-9414-8

Contact: Michelle Dumas Creator: dezinnia Spec # 34-8701-9414-8 Structure: NA Inks: Black Date: 09/23/08 This artwork has been created as requested by 3M. 3M is responsible for the artwork AS APPROVED and assumes full responsibility for its correctness. 15