Troubleshooting
7
18
Problem
Cause
Remedy
Cylinder rod will not move
1.
Broken drive shaft.
2. Shipping plugs left in hydraulic hoses.
3. Set screws in coupling not adjusted properly.
4. Loose shaft coupling.
5. Gear sections damaged.
6.
Damaged relief valve.
7.
Hydraulic lines blocked.
8. Incorrect oil level.
9. Damaged control valve.
10.
Blocked control valve.
1. See authorized service dealer.
2. Disconnect hydraulic hoses, remove shipping
plugs, reconnect hoses.
3. See authorized service dealer.
4. Correct engine/pump alignment as necessary.
5. See authorized service dealer.
6.
See authorized service dealer.
7.
Flush and clean hydraulic system.
8. Check oil level.
9. See authorized service dealer.
10. Flush and clean hydraulic system
Slow cylinder shaft speed
while extending and
retracting
1. Gear sections damaged.
2. Excessive pump inlet vacuum.
3. Slow engine speed.
4. Damaged relief valve.
5. Incorrect oil level.
6.
Contaminated oil.
7.
Control valve leaking internally.
8. Internally damaged cylinder.
1. See authorized service dealer.
2. Make certain pump inlet hoses are clear and
unblocked. use short, large diameter inlet
hoses.
3. See authorized service dealer.
4. See authorized service dealer.
5. Check oil level.
6.
Drain oil, clean reservoir and refill.
7.
See authorized service dealer.
8. See authorized service dealer
Leaking Cylinder
1. Worn seals.
2. Scored cylinder.
1. See authorized service dealer.
2. See authorized service dealer.
