Product Manual B
Page 8 of 12
4. Fill with good quality hydraulic jack oil as recommended above. Replace the vented oil plug.
Lubrication
Use a light machine oil to lubricate pivot points, hinges, etc.
Troubleshooting
Use the table below to troubleshoot problems before contacting service personnel or your local
dealer. If the problem continues after troubleshooting, call your local dealer for assistance.
Failure
Possible Cause
Corrective Action
Application will not extend,
move or respond to
pressurized fluid.
Overload condition.
Check if the pressure is low. After long
term operation, the strength of the
spring tension is weaker creating
lower pressure. Inspect and change
the worn parts.
Release valve not closed.
Ensure release valve is closed.
Application responds to
pressurized fluid, but
system does not maintain
pressure.
Overload condition.
Check if the pressure is low. After long
term operation, the strength of the
spring tension is weaker creating
lower pressure. Inspect and change
the worn parts.
Release valve does not close.
Ensure release valve is closed.
Hydraulic unit malfunction.
Check if the pressure is low. After long
term operation, the strength of the
spring tension is weaker creating
lower pressure. Inspect and change
the worn parts.
Application will not return
fluid to pump (i.e., cylinder
will not retract).
Malfunctioning coupler,
damaged application.
Secure load by other means. Open
release valve, depressurize pump
and hose, remove coupler and/or
application, then renew or replace.
Reservoir is overfilled.
Secure load by other means. Open
the release valve, depressurize the
pump and hose, remove the
application, and drain the fluid to the
proper level.
Application will not fully
extend (cylinder or
spreader).
Fluid level low.
Securing load, depressurizing pump,
remove application, then ensure
proper fluid level.
Poor performance.
Air trapped in system.
Ensure proper fluid level.
Ensure vented oil filler plug allows the
pressurized reservoir air to escape
(inspect before use).