Troubleshooting the tool
The table below shows the most common troubleshooting procedures.
The actions marked with asterisk * must only be carried out by authorized workshops or qualified service technicians.
Problem | Reason | Action |
|---|---|---|
Tool does not start | No air flow to the tool | Check air connection |
Overspeed protection device activated | * | |
| Motor jammed | * |
Inconsistent idling speed | Unstable air pressure | Check air pressure regulator |
| Worn governor | * |
Low power | Low air pressure | Check air pressure |
| Wrong length or dimension of supply hose | Check air connection |
| Blocked filters | Clean or change the corse & fine filter |
| Too humid air (high dew point) | Check the compressor |
| Too much oil in gear box | Check oil level |
| Worn throttle valve | * |
| Worn turbine | * |
| Worn governor | * |
Oil in exhaust air | Lubricated air | Oil in the air is not recommended |
| Leak from turbine seal | * |
| Leak from O-ring on diffuser | * |
| Leak from overspeed pin | * |
Oil leakage at spindle | Loose screws or oil plug | Tighten screws |
| Worn oil seal | * |
| Damaged O-ring on plate | * |
| Damaged spindle bearing | * |
| Missing seal on oil plug or screws | Replace seal |
Tool starts unexpectedly | Damaged throttle valve | * |
| Valve pin jammed in start position | Change pin & guide |
| Damaged safety lock mechanism | Change mechanism |
Vibrations | Worn or damage grinding wheel | Change wheel |
| Autobalancer not working properly | Change autobalancer |
Too high idle speed | Governor | * |
Motor housing too hot | Too much oil in gear box | Check oil level |
Abnormal sound | Too little oil in gear housing | Check oil |
| Damaged gear | * |
| Incorrect gear play | * |
| Worn motor bearings | * |
