OP000497
Troubleshooting
6-2
RELIEF VALVE
CENTER JOINT
Leaky oil seal.
Foreign material in spool.
Clean or replace valve housing assembly.
Pressure too high.
Check with pressure gauge and adjust.
Lever or linkage bent.
Remove and check linkage.
Return spring damaged.
Replace.
Valve temperature uneven.
Warm up entire system.
Foreign material in seal.
Clean seal.
High back pressure in valve return
line.
Increase size of return line.
Foreign material in seal.
Clean seal.
Damaged spool.
Replace valve housing assembly.
Seal cracked or damaged.
Replace.
Problem
Possible Cause
Remedy
Problem
Possible Cause
Remedy
Pressure does not rise.
Poppet sticking open.
Disassemble and clean.
Pressure unstable.
Damaged pilot poppet seal.
Replace damaged parts.
Main poppet of pilot piston sticking.
Disassemble, clean and remove surface
pitting.
Abrupt rise and fall in
pressure.
Wear, due to foreign material.
Replace worn parts.
Locknut and adjusting spring loose.
Adjust pressure.
Oil leaks.
Seals leaking, O-ring worn.
Replace worn or damaged parts.
Parts sticking, due to foreign
material.
Disassemble, check for damage and
clean.
Problem
Possible Cause
Remedy
Lack of power
Bad center joint seal.
Replace.
Damaged center joint rotor.
Replace.
Bad seal.
Replace seal.
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 ...