EVH MFG HARDEE LR50148, Operator And Maintenance Manual

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Section 6
Hardee by EVH
Troubleshooting
LR50148 Long Reach Mower 22
Troubleshooting Guide
Hydraulic System, Blade System, Pump, Motor, Fluid Lines
Problem Possible Cause Solution / Correction
Cylinder Will Not Operate No Power To Joystick Repair / Replace Connections
Fuse Blown Inside Lighter Plug Replace Fuse
Joystick Not Connected To A 12-Volt
System Connect To 12-Volt Power Supply
Joystick Not Connected To Valve Examine Bulkhead Connection To Mower
Proportional Valve Not Functioning Repair Electrical Connections To
Solenoid Or Replace Solenoid
Head Drifts Back When In
Operation Improper Counter Balance Valve Setting Adjust Counter Balance Valves To
Specifications (Refer To Pages 18 - 19)
Cylinder Leakage Repair / Replace Cylinders
Boom Drifts Down Improper Counter Balance Valve Setting Adjust Counter Balance Valves To
Specifications (Refer To Pages 18 - 19)
Cylinder Leakage Repair / Replace Cylinders
Leaking Motor Motor Seal Blown Repair / Replace Seal And Check Filter
For Blockage (Repair / Replace Filter)
Blades Loose Speed In Mowing Improper Relief Valve Setting Check Relief Valve Setting (Refer To
Pages 18-19)
Proportional Valve Repair / Replace Relief Valve
Check for trash or Replace
Poppet Valve in Motor Check/Replace Poppet valves in motor
Pump Whines Worn Or Damaged Pump Repair / Replace Pump (Make sure gate
valve is open)
Improper Oil In System Replace Oil
Requires Hardee Oil Part NO 23333 Or
Comparable Oil With Proper Viscosity
Pressure Setting On Relief Valve Too
Low Check Relief Valve Setting (Refer To
Pages 18-19)
Motor Whines Worn Or Damaged Motor Repair / Replace Motor
Improper Oil In System Replace Oil
Requires Hardee Oil Part NO 23333 Or
Comparable Oil With Proper Viscosity
Pressure Setting On Relief Valve Too
Low Check Relief Valve Setting (Refer To
Page 18)
Motor Seal Continually Blows Out Internal Poppet Valve Damaged Replace Poppet Valves
Unit Vibrates Severely Broken Blade Replace Blades, Blade Bolts And Nuts
(Refer To Page 16)
Mismatched/Unbalanced Blades Refer to Page 16
Blade Holder Loose Repair / Replace Blade Holder (Refer To
Page 16)
Loose Output Shaft Repair / Replace Shaft's Bearings In
Mower Head Housing
Mower Head Grinds And Roars
When Operating Worn Bearings Or Improper Lubrication In
Mower Hydraulic Motor Housing Repair / Replace Components (Bearing,
Seals And Housing) As Required