Enerpac LW16 Fiche D'instructions page 4

Grease
4. Machined surfaces and moving parts should be
liberally coated with grease PRIOR to each use.
Without lubrication, the driving wedge is subject to
galling, and possible binding during retract stroke.
Problem
Lifting Wedge will not advance.
Lifting Wedge advances part way.
Lifting Wedge advances in spurts.
Lifting Wedge advances slower than normal.
Lifting Wedge advances but will not hold.
Lifting Wedge drive cylinder leaks oil.
Lifting Wedge will not retract or retracts
slower than normal.
Oil leaking from external relief valve.
Lifting Wedge advances but doesn't retract
under load.
Lifting Wedge jaws are bent.
5. PRIOR to each use, examine Lifting Wedge for
loose or damaged parts. Tighten or replace
any suspect parts. Failure to properly maintain
Lifting Wedge may result in catastrophic failure
or personal injury.
WARNING: DO NOT repair bent lifting
jaws; replace with new parts.
NOTE: Lower Jaw (Main Body) is not repairable and
not replaceable. For safety, replace entire Lifting
Wedge.
6.0 TROUBLESHOOTING
These cylinders should be repaired only by Authorized
Enerpac Technical Service Centers. Single-acting
cylinders are spring-loaded and require special
disassembly techniques to prevent personal injury.
Possible Cause
Pump release valve open.
Coupler not fully tightened.
Oil level in pump is low.
Pump malfunctioning.
Load is too heavy for Lifting Wedge.
Oil level in pump is low.
Coupler not fully tightened.
Lifting Wedge plunger binding.
Air in hydraulic system.
Lifting Wedge plunger binding.
Leaking connection.
Coupler not fully tightened.
Pump malfunctioning.
Lifting Wedge drive cylinder seals leaking.
Pump malfunctioning.
Leaking connection.
Incorrect system set-up.
Worn or damaged seals.
Internal Lifting Wedge drive cylinder damage.
Loose connection.
Pump release valve is closed.
Coupler not fully tightened.
Pump reservoir over-fi lled.
Narrow hose restricting fl ow.
Broken or weak retraction spring.
Lifting Wedge damaged internally.
Coupler not fully tightened.
Restriction in return line.
Inadequate drive wedge lubrication.
Load shift.
Load too heavy for Lifting Wedge.
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