Enerpac P-Series ULTIMA - Manual (Page 9)

9
Cylinder does
not advance,
advances slowly,
or advances
erratically.
Cylinder
advances, but
does not hold
pressure.
Cylinder does
not retract,
retracts part
way, or retracts
more slowly than
normal.
1. Low oil level in pump reservoir.
2. Release valve open or not fully
closed.
3. Relief valve setting too low.
4. Hydraulic coupler not properly
connected.
5. Load is too heavy.
6. Air trapped in system.
7. Reservoir overfilled.
8. Cylinder plunger binding.
1. Leaking connection.
2. Leaking seals.
3. Internal leakage in pump.
4. Bypass valve setting too low.
(Models P-77, P-80, P-801 and
P-84)
1. Release valve closed.
2. Reservoir overfilled.
3. Hydraulic coupler not properly
connected.
4. Air trapped in system.
5. Hose inside diameter too
narrow.
6. Cylinder retraction spring
broken or other cylinder
damage.
7. In-line valve closed.
1. Add oil according to the instructions in Section 9.1.
2. Close the release valve.
3. Set the relief valve pressure according to
instructions in Section 7.0.
4. Check that all couplers are fully tightened.
5. Do not attempt to lift more than rated tonnage.
6. Remove air according to the instructions in
Section 6.0.
7. Remove excess oil from reservoir.
Note: If cylinder operates normally when pump oil fill
plug is loosened, reservoir may be overfilled with oil.
8. Check for damage to cylinder. Have cylinder
serviced by an Enerpac Authorized Service Center.
1. Check that all connections are tight and leak free.
2. Locate leak(s) and have equipment serviced by an
Enerpac Authorized Service Center.
3. Have pump serviced by an Enerpac Authorized
Service Center.
4. Have an Enerpac Authorized Service Center adjust
the bypass valve setting.
1. Open the release valve.
2. Remove excess oil from reservoir.
Note: If cylinder operates normally when pump oil fill
plug is loosened, reservoir may be overfilled with oil.
3. Check that all couplers are fully tightened.
4. Remove air according to the instructions in
Section 6.0.
5. Use larger diameter hydraulic hose.
6. Have cylinder serviced by an Enerpac Authorized
Service Center.
7. Ensure that in-line valves (if used) are correctly
set.
Table 3, Troubleshooting Guide - ULTIMA Series Hand Pumps
Problem Possible Cause Solution
Note: For the location of your nearest Enerpac Authorized Service Center go to www.enerpac.com