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17
MAINTENANCE SECTION
TROUBLESHOOTING GUIDE
Trouble Probable Cause Solution
Low power or low free speed Insufficient air pressure Check air line pressure at the Inlet of the Tool.
It must be 90 psig (6.2 bar/620 kPa).
Clogged muffler elements Disassemble the Tool and agitate bare Motor
Housing and Flange in a clean, suitable cleaning
solution. Back Flush the Muffler Elemen ts with a
clean, suitable cleaning solu tion until all contamin-
ents and obstructions are removed. If elements can-
not be cleaned, replace them.
Plugged Inlet Screen Clean the Inlet Screen with a clean, suitable
cleaning solution or replace the Screen.
Worn or broken Vanes Install a complete set of new Vanes.
Worn or broken Motor Housing Replace the Motor Housing.
Internal air leakage in the Motor
Housing indicated by high air
consumption/low speed or air
leaking out the front and rear
exhaust simultaneously.
Replace the Motor Housing.
Grit buildup under the Throttle
Lever restricting full Throttle
Valve Plunger movement
Remove the Throttle Lever and clean the groove in
the Motor Housing.
Bent stem on Throttle Valve Replace the Throttle Valve.
Angle gear wick misaligned or
damaged
Reposition or replace the wick.
Excessive runout Bent Arbor Replace the Arbor.
Loose Collet Nut Tighten the Collet Nut until snug.
Worn or damaged Collet, Collet
Nut or Nosepiece
Replace the damaged component and retest.
Worn or damaged Upper Arbor
Bearing or Lower Arbor Bearing
Replace the worn or damaged Bearing.
Scoring of End Plate Worn Front End Plate Spacer or
Front End Plate
Install a new Front End Plate Spacer and Front End
Plate.
Worn Front Rotor Bearing Install a new Front Rotor Bearing.
Leaky Throttle Valve Dirt accumulation on Throttle
Valve or Throttle Valve Seat
Disassemble, inspect and clean parts.
Worn Throttle Valve or Throttle
Valve Seat
Replace the Throttle Valve and/or Throttle Valve
Seat.
Excessive dirt build--up beneath
the Throttle Lever
Clean out the slot area.
Bent Throttle Valve Plunger Replace the Plunger.