OP000497
6-3
Troubleshooting
CONTROL LEVER
ATTACHMENTS
Problem
Possible Cause
Remedy
Lever feels "heavy" when
operated.
Foreign material in control valve
spool.
Clean control valve.
Valve spool sticking.
Replace valve housing assembly.
Lack of linkage lubrication.
Lubricate.
Problem
Possible Cause
Remedy
Lack of power.
Lack of engine power.
Poor performance due to worn
hydraulic pump.
Replace hydraulic pump.
Bad main relief valve.
Adjust pressure or replace.
Low level of hydraulic oil.
Add oil.
Wrong viscosity hydraulic oil.
Replace with correct viscosity.
Suction filter restricted.
Replace filter.
Poor overall performance.
Hydraulic pump failure.
Replace hydraulic pump.
Hydraulic oil level low.
Add oil.
Lack of power.
Main or port relief valve pressure
set too low.
Adjust pressure.
Damaged hydraulic cylinder seal.
Replace seal.
Hydraulic cylinder piston or rod
damaged.
Replace piston or rod.
Unusual sound from
attachment connections.
Lack of grease.
Add grease.
Coupling pin worn.
Replace bushing or pin.
Summary of Contents for DX35Z
Page 2: ......
Page 6: ...Table of Contents K1025196E IV Index 8 1 ...
Page 60: ...OP000468 Safety 1 54 ...
Page 90: ...OP000469 Operating Controls 2 30 ...
Page 132: ...OP000470 Operation 3 42 ...