MAINTENANCE
Troubleshooting
The following shows various problems, the apparent cause, and the recommended procedure for their correction.
PROBLEM | POSSIBLE CAUSE | REMEDY |
Mower will not rotate | In line Fuse blown. | Replace Fuse. |
| Safety switch not making contact. | Adjust or replace Safety Switch. |
| Broken Drivebelts. | Replace Belts |
| On/Off Switch bad. | Replace On/Off Switch |
| Insufficient voltage through | Check Coil and Wires. |
| Solenoid. |
|
| Solenoid Spool will not shift | Clean or replace Solenoid Cartridge. |
| completely. |
|
Mower will not stop. | Solenoid Spool will not shift. | Clean or replace Solenoid Cartridge. |
Intermittent mowing power. | Safety Switch maladjustment | Adjust Safety Switch. |
| Electrical problem. | Trace Electrical Circuit for short. |
| Bad Solenoid. | Replace Solenoid Coil. |
Insufficient cutting power | Drivebelts slipping. | Readjust Belt tension and check. |
or low Cuttershaft speed. | Bound Shaft. | Free the Shaft. |
| Relief Valve setting too low. | Adjust Relief Valve. |
| Solenoid Spool will not shift | Replace Valve Cartridge. |
| completely. |
|
| Worn Pump or Motor. | Replace or rebuild. |
Hydraulic Oil overheating | Low Fluid level. | Fill to proper level. |
Mower free to rotate. | Relief Valve setting too high. | Adjust Relief Valve. |
| Obstruction in Power | Remove obstruction & Extra Items |
| or | which are not standard. |
Pump making loud noise. | Low Oil level. | Add Hydraulic Fluid. |
| Vacuum in reservoir. | Clean or replace Vent Plug. |
| Clogged Oil Filter. | Replace Filter. |
| Worn Pump. | Replace or rebuild. |
Mower will not raise or | Slow Gear Pump speed. | Check Belts, Idler Pulley, Spring. |
raises slowly. | Relief Valve Setting too low. | Adjust Relief Valve. |
| Worn Gear Pump. | Replace or rebuild. |
| Worn Cylinder. | Replace or rebuild. |
| Worn Control Valve. | Replace Valve Section. |
INTERSTATER 03/09 | Maintenance Section |
© 2009 Alamo Group Inc.
