| Troubleshooting |
| | |
| Problems | Causes | Remedy |
| Gear case becomes unusually hot | 1. Overload | Decrease load or use a larger model |
| 2. Insufficient or excessive lubricating oil | Adjust oil level so it aligns with mark on oil gauge |
| 3. Contaminated oil | Flush interior and resplace oil |
| 4. Oil viscosity is improper | Change oil with one having the proper viscosity |
| 5. Bearing are improperly mounted | Reassemble and tighten properly (Consult dealer) |
| 6. Shaft is connected improperly | Align properly |
| 7. Air vent port is closed | Remove rubber plug from oil cap |
| 8. Ambient temperature is too high | Install cooling fan or move to cooler area |
| Unusual or excessive noise | 1. Improper meshing | Adjust properly (Consult dealer) |
| 2. Bearings are damaged or worn | Replace bearings (Consult dealer) |
| 3. Overloaded | Decrease load or use a larger model |
| 4. Insufficient oil | Add oil so level aligns with oil gauge |
| 5. Oil seal is not wet with oil | Lubricate |
| 6. Improper installation or connection | Tighten loose bolts and align correctly |
| 7. Bearing are improperly mounted | Adjust (Consult dealer) |
| 8. Input rpm is too high | Reduce |
| 9. Foreign particles are mixed in oil | Remove foreign particles and replace oil after flushing interior. (Consult dealer) |
| Vibration is excessive | 1. Gear teeth are worn | Replace wheel (Consult dealer) |
| 2. Foreign particles are mixed in oil | Remove foreign particles and replace oil after flushing interior. (Consult dealer) |
| 3. Bearings are worn or damaged | Replace bearings (Consult dealer) |
| 4. Mounting bolts are loose | Tighten |
| 5. Wheel is improperly aligned | Replace wheel (Consult dealer) |
| Input/output shafts do not rotate at all | 1. Teeth seizure | Replace worm and wheel (Consult dealer) |
| 2. Bearings are worn or damaged | Replace bearings (Consult dealer) |
| 3. Foreign particles are mixed in oil | Remove foreign particles and replace oil after flushing interior. (Consult dealer) |
| Input/output shafts rotates in idle condition and output shaft is not driven | 1. Wheel teeth is worn | Replace wheel (Consult dealer) |
| 2. Wheel boss or shaft key are damaged | Replace wheel or key (Consult dealer) |
| 3. Input shaft or worm teeth are damaged | Replace shaft or worm (Consult dealer) |
| 4. Input shaft is broken | Replace shaft (Consult dealer) |
| Teeth are worn | 1. Overload | Reduced load |
| 2. Contaminated oil | Replace oil after flushing interior |
| 3. Insufficient oil | Add oil |
| 4. Oil viscosity is too low | Replace oil with one having the proper viscosity |
| 5. Ambient temperature is too high | Install cooling fan or move to cooler area |
| 6. Foreign particles are mixed in oil | Remove foreign particles, clean interior and replace oil |
| 7. Excessive rpm | Reducer rpm or use a different model |
| 8. Backlash is improper | Reassemble and adjust |
| Main body has cracks or shaft is broken | 1. Overload | Reduce load or use a larger model |
| 2. Impact load is greater than rated load. | Reduce impact load or use a larger model |
| 3. Connection is improper | Align properly |
| 4. Gear case has partial thickness or cavities | Replace gear case (Consult dealer) |
| Oil leaks | 1. Oil seal is defective | Replace oil seal |
| 2. Cover mounting bolts are loose | Tighten bolts |
| 3. Air does not escape | Check oil cap |
| 4. Input and output shafts are marred | Replace shafts (Consult dealer) |
| 5. Excessive oil | Adjust oil level so it aligns with mark on oil gauge |
| 6. Gear case has cavities | Replace gear case (Consult dealer) |
| 7. Gear case has fissures | Replace gear case (Consult dealer) |
| 8. Other than normal installation directions (horizontal oblique, upside-down etc) | Const dealer about installation |
