Enerpac PL-Series - Manual (Page 7)

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 Possible Cause Solution
1. Cylinder will not
clamp/unclamp.
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.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
2. Cylinder
advances
part way.
A.oil level in pump too low
B.plunger binding A.fill pump reservoir
B.replace damaged parts
—refer to Repair Parts Sheet
3. Cylinder
clamps/unclamps
slower than
normal.
A.leaking connection
B.restricted hydraulic line
C.pump malfunction A.re-tighten fittings, couplers, and tubing
B.check valves, fittings, and tubing
C.refer to pump Instruction Sheet
4. Cylinder
clamps/unclamps
but will not hold
pressure.
A.seals damaged
B.leaking connection
C.pump malfunction
A.replace seals
—refer to Repair Parts Sheet
B.re-tighten fittings, couplers, and tubing
C.refer to pump Instruction Sheet
5. Cylinder leaks
oil.
A.seals damaged
B.plunger worn or damaged
A.replace seals
—refer to Repair Parts Sheet
B.replace damaged parts
—refer to Repair Parts Sheet
7