Dynabrade 50371, 50372 Important Operating, Maintenance And Safety Instructions
Models:
50371 — With 3/8"-24 Male Spindle
50372 — With 5/8"-11 Male Spindle
4" Right Angle
Disc Sander
Parts Page Reorder No. PD96•61
Effective October, 1996
Supersedes PD96•17
50362 Angle Housing
50381 Lock Nut
50383 Collar
52186 Pinion/Gear Set
50332 Pinion Spacer
50368 Front Bearing Plate
01010 Spacer 01185 Blades(4/pkg.)
50379 Rotor 01028 Cylinder
01722 Rear Bearing Plate
02649 Bearing
50424 Bearing Washer
12152 Bearing
Spindle
52120 Shim Pack
(3/pkg.)
50431 Bearing
52088 Spacer
50412 Felt Ring
50289 Washer
53163 Handle
95042 Washer
01295 Housing
01477 Valve Stem
95730 O-Ring
01024 O-Ring
01247 Regulator
57344 Lever
95558 Retaining Ring
01017 Pin
01464 Seal
01472 Tip Valve
01468 Spring
50335 Silencer
50367 Felt Silencer 50336 Seal
50366 Exhaust Cover
50511 Screw (2)
01791 Washer (2)
07149 Clamp
Left Hand Threads
52186 Pinion/Gear Set
Right Hand Threads
50767 Guide Pin (2)
*Grease every 16 hours of use
See inside for Important Operating, Maintenance and Safety Instructions
01041 Grease Fitting*
Oil
Loctite/Hernon:
L4= Hernon #940
Torque: N•m x 8.85 = In. - lbs.
T
2
= 4.5 N•m, T3= 17 N•m, T4= 23 N•m
T
5
= 34 N•m, T6= 45 N•m
KEY
L
T
O
T
6
O
T
3
T
2
L
4
T
5
T
5
G
95375 O-Ring 96065 O-Ring
01494 Inlet Adapter
53190 Block Plate
T3L
2
O
50384 Spindle Bearing Cover
50334 - 3/8"-24
52117 - 5/8"- 11
Spindle Nut
50333 - 50371
52118 - 50372
01007 Bearing
L
4
01121 Shim Pack (3/pkg.)
12,000 RPM, Machine and Motor parts
Always operate, inspect and maintain this tool in accordance with the Safety Code for portable air
tools (ANSI B186.1 and B7.1) and any other applicable safety codes and regulations. Please refer to
Dynabrade's Warning/Safety Operating Instructions for more complete safety information.
Right Hand Threads
!
WARNING
Important Operating, Maintenance and Safety Instructions
Carefully read all instructions before operating or servicing any Dynabrade® Abrasive Power Tool.
Warning: Hand, wrist and arm injury may result from repetitive work motion and overexposure to vibration.
Important: All Dynabrade air tools must be used with a Filter-Regulator-Lubricator to maintain all warranties.
Operating Instructions:
Warning: Eye, face and body protection must be worn while operating power tools. Failure to do so may result in serious injury or death. Follow
safety procedures posted in workplace.
1. With power source disconnected from tool, securely fasten abrasive/accessory on tool.
2. Install air fitting into inlet bushing of tool. Important: Secure inlet bushing of tool with a wrench before attempting to install the air fitting to avoid over
tightening of inlet bushing and damaging valve body housing
3. Connect power source to tool. Be careful not to depress throttle lever in the process.
4. Check tool speed with tachometer. If tool is operating at a higher speed than the RPM marked on the tool or operating improperly, the tool should
be serviced to correct the cause before use.
Maintenance Instructions:
Products offered by Dynabrade should not be converted or otherwise altered from original design without
the expressed written consent from Dynabrade, Inc.
1. Check tool speed regularly with a tachometer. If tool is operating at a higher speed than the RPM marked on the tool, the tool should be serviced to
correct the cause before use.
2. Some silencers on air tools may clog with use. Clean and replace as required.
3. All Dynabrade air motors should be lubricated. Dynabrade recommends one drop of air lube per minute for each 10 SCFM (example : if the tool
specification state 40 SCFM, set the drip rate of your filter-lubricator at 4 drops per minute). Dynabrade Air Lube (P/N 95842: 1pt. 473ml.) is recommended.
4. An air line filter-regulator-lubricator must be used with this air tool to maintain all warranties. Dynabrade recommends the following: 11289 Air Line
Filter-Regulator-Lubricator — Provides accurate air pressure regulation, two-stage filtration of water contaminants and positive-drip lubrication of
pneumatic components. Operates 40 CFM @ 90 PSI has 3/8" NPT female ports.
5. Gear case of this Dynabrade air tool should be lubricated every 16 hours of use by using 95541 Grease Gun and 95542 Grease.
6. Use only genuine Dynabrade replacement parts. To reorder replacement parts, specify the Model #, Serial #, and RPM of your machine.
7. A motor tune up kit (P/N 96184) is available which includes assorted parts to help maintain motor in peek operating condition.
8. Mineral spirits are recommended when cleaning the tool and parts. Do not clean tool with any solvents or oils containing acids, esters, keytones,
chlorinated hydrocarbons, or nitro carbons.
Safety Instructions:
• Warning: Eye, face and body protection must be worn while operating power tools. Failure to do so may result in serious injury or death. Follow safety
procedures posted in workplace.
• Important: User of tool is responsible for following accepted safety codes such as those published by the American National Standards Institute (ANSI).
• Operate machine for 30 seconds before application to workpiece to determine if machine is working properly and safely before work begins.
• Always disconnect power supply before changing abrasive or making machine adjustments.
• Inspect abrasives and accessories for damage or defects prior to and during operation of tool.
• Please refer to Dynabrade’s Warning/Safety Operating Instructions Tag (Reorder No. 95903) for more complete safety information.
• Warning: Hand, wrist and arm injury may result from repetitive work, motion and overexposure to vibration.
Notice
All Dynabrade motors use the highest quality parts and metals available and are machined to exacting tolerances. The failure of quality pneumatic motors
can most often be traced to an unclean air supply or the lack of lubrication. Air pressure easily forces dirt or water contained in the air supply into motor
bearings causing early failure. It often scores the cylinder walls and the rotor blades resulting in limited efficiency and power. Our warranty obligation is
contingent upon proper use of our tools and cannot apply to equipment which has been subjected to misuse such as unclean air, wet air or a lack of lubrication
during the use of this tool.
Note: To order replacement parts specify the model and serial number of your machine.
Full One Year Warranty
Following the reasonable assumption that any inherent defect which might prevail in a product will become apparent to the user within one year from the date
of purchase, all equipment of our manufacture is warranted against defects in workmanship and materials under normal use and service. We shall repair or
replace at our factory, any equipment or part thereof which shall, within one year after delivery to the original purchaser, indicate upon our examination to
have been defective. Our obligation is contingent upon proper use of Dynabrade tools in accordance with factory recommendations, instructions and safety
practices. It shall not apply to equipment which has been subject to misuse, negligence, accident or tampering in any way so as to affect its normal performance.
Normally wearable parts such as bearings, sanding pads, rotor blades, etc., are not covered under this warranty.
2
(PD96•61)
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