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