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TROUBLESHOOTING
The following information is intended to be used only as an aid in determining if a
problem exists. For repair service, contact your Distributor or Authorized Enerpac
Service Center.
Problem
1. Cylinder will not
clamp/unclamp.
2. Cylinder
advances
part way.
3. Cylinder
clamps/unclamps
slower than
normal.
4. Cylinder
clamps/unclamps
but will not hold
pressure.
5. Cylinder leaks
oil.
Possible Cause
A.pump release valve open
B.no oil in pump reservoir
C.air in system
D.couplers not fully tightened
E. blocked hydraulic line
F. spring broken in cylinder
A.oil level in pump too low
B.plunger binding
A.leaking connection
B.restricted hydraulic line
C.pump malfunction
A.seals damaged
B.leaking connection
C.pump malfunction
A.seals damaged
B.plunger worn or damaged
A.close pump release valve
B.fill pump reservoir
C.remove air from hydraulic system
D.re-tighten couplers
E. check valves, fittings, and tubing
F. replace spring
A.fill pump reservoir
B.replace damaged parts
—refer to Repair Parts Sheet
A.re-tighten fittings, couplers, and tubing
B.check valves, fittings, and tubing
C.refer to pump Instruction Sheet
A.replace seals
—refer to Repair Parts Sheet
B.re-tighten fittings, couplers, and tubing
C.refer to pump Instruction Sheet
A.replace seals
—refer to Repair Parts Sheet
B.replace damaged parts
—refer to Repair Parts Sheet
7
Solution
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