MAINTENANCE
INTERSTATER 03/09 Maintenance Section 5-13
© 2009 Alamo Group Inc.
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 Belt s
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 Circuit-Extra Remove obstruction & Extra Items
or Will-Fit Parts. 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.