Westward Operating Instructions and Parts Manual
Westward Hydraulic Engine Cranes
3ZC71H, 3ZC72K, and 5Z010G
Troubleshooting Chart
Crane will not lift load
1. Release valve not tightly closed
1. Ensure release valve tightly closed
2. Overload condition
2. Remedy overload condition
Crane will lift, but not maintaining
1. Release valve not tightly closed
1. Ensure release valve tightly closed
pressure
2. Overload condition
2. Remedy overload condition
3. Hydraulic unit malfunctioning
3. Replace
Crane will not lower after unloading
1. Reservoir overfilled
1. Drain fluid to proper level
2. Linkages binding
2. Clean and lubricate moving parts
Poor lift performance
1. Fluid level low
1. Ensure proper fluid level
2. Air trapped in system
2. With ram fully retracted, remove oil
filler plug to let pressurized air
escape, reinstall oil filler plug
Will not lift to full height
1. Fluid level low
1. Ensure proper fluid level
Symptom
Possible Cause(s)
Corrective Action
6
