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Trouble
Front Rotor Bearing runs hot
Slow tool idle
Air leakage around Flow Ring
Rough operation/vibration
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.
All manuals and user guides at all-guides.com
MAINTENANCE SECTION
TROUBLESHOOTING GUIDE
Probable Cause
Incorrect installation of the Front
Seal Cup
Front End Plate Spacer rubbing
the bore of the Front End Plate
Incorrect Front Rotor Bearing
installation orientation
Bent or leaky Throttle Valve
Damaged, mutilated or missing
Flange Clamp
Damaged Flow Ring
Improper lubrication or dirt
buildup
Worn or broken Rear Rotor
Bearing or Front Rotor Bearing
Worn or broken Upper Arbor
Bearing or Lower Arbor Bearing
Worn or broken Bevel Gear or
Bevel Pinion
26
(Continued)
Solution
Reposition the Front Seal Cup flush with the face
of the Front End Plate Spacer.
Replace the Front End Plate and Front End Plate
Spacer combination.
If a black stain or black hashmarks are not visible
on the face of the Bearing when it is assembled
with the End Plate and Rotor, the Bearing is
installed backwards. If possible, remove the Bear-
ing and install it correctly or replace the Bearing.
Replace the Throttle Valve.
Replace the Flange Clamp.
Replace the Flow Ring.
Disassemble the Tool and clean in a suitable
cleaning solution. Assemble the Tool and inject
3 cc of the recommended oil into the Inlet and run
the Grinder long enough to coat the internal parts
with the oil.
Replace the worn or broken Bearings. Examine the
Front End Plate, Front End Plate Spacer Front
Seal Cup and Rear Rotor Bearing Spacers and
replace any damaged parts. If the rear end plate is
damaged, replace the Rotor.
Replace the worn or broken Bearing.
Examine the Bevel Gear and Bevel Pinion. If
either is worn or damaged, replace both the Gear
and the Pinion because they are a matched set and
must not be used separately.
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