Troubleshooting Guide - Williams 4M04T Owner's/Operator's Manual

TROUBLESHOOTING GUIDE

The following information is intended as an aid in determining if problem exists. Pump and ram should be repaired
only by authorized Williams Service Center. For repair service, contact service center in your area.
Symptom
Erratic action
Ramr will not extend, or
respond to pressurized fluid
Ram extend only partially
Ram move slower than normal
Ram responds to pressurized
fluid, but system does not maintain
pressure
Oil leaking from ram
Ram will not retract or retracts
slower than normal
Poor performance
Possible Causes
• Air in system or pump cavitation.
• External leakage in ram.
• Ram sticking or binding.
• Overload condition.
• Loose/Faulty couplers.
• Oil level in pump is low.
• Oil level in pump is low.
• Overload condition.
• Ram is sticking or binding.
• Pump malfunction.
• Loose connection or coupler.
• Restricted hydraulic line or fitting.
• Pump not working correctly.
• Ram seals leaking.
• Overload condition.
• Pump malfunctioning.
• Ram seals leaking.
• Worn or damaged seals.
• Malfunctioning coupler, damaged
application.
• Pump reservoir overfilled.
• Ram damage internally.
• Oil level in pump is low.
• Air trapped in system.
7
Corrective Action
• Vent the system (refer to figure 3).
• Contact service center.
• Contact service center.
• Remedy overload condition.
• Tighten/Replace couplers.
• Fill and bleed the system.
• Fill and bleed the system.
• Remedy overload condition.
• Contact service center.
• Contact service center.
• Tighten connection or coupler.
• Clean and replace if damaged.
• Check pump's operating
instructions.
• Contact service center.
• Remedy overload condition.
• Contact service center.
• Contact service center.
• Contact service center.
• Secure load by other means.
Depressurize pump and hoses,
remove application and replace
coupler.
• Secure load by other means.
Depressurize pump and hoses,
remove application, then drain
fluid to proper level.
• Contact service center.
• Ensure proper oil level.
• Vent the system (refer to figure 3).