Trouble
Front Rotor Bearing runs hot
Slow tool idle
Air leakage around Flow Ring
Rough Operation/Vibration
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
build up
Worn or broken Rear Rotor
Bearing or Front Rotor Bearing
Worn or broken Rear or Front
Arbor Bearing in CX models
Dirt contaminated Front Arbor
Bearing in CX models
Bent, worn or broken Extension
Arbor on CX models
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.
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 hash–marks are not visible
on the face of the Bearing when it is assembled
with the End Plate and Rotor, the Bearing is in-
stalled backwards. If possible, remove the Bearing
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 it in a clean, 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 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.
Replace the Bearing.
Replace the Extension Arbor if, when mounted
between centers, the runout on the arbor body exceeds
0.002" T.I.R. or 0.0005" T.I.R. on the bearing mount-
ing diameters.
30
Solution