Enerpac GBJ-Series - Manual (Page 7)

7
TROUBLESHOOTING TABLE (Continued)
SYMPTOM POSSIBLE CAUSE SOLUTION
3. Ram extends only
partially.
Low oil level. Fill reservoir to the proper level with Enerpac Type
HF hydraulic oil (ISO Grade 32). Refer to Section
6.1.
Ram is binding. Remove any dirt or gummy deposits from jack. Be
sure that jack is not misaligned under load.
4. Ram advances slowly. Pump assembly worn or
damaged. Have jack inspected and repaired by Enerpac
Authorized Service Center.
Seal wear and/or internal
damage. Have jack inspected and repaired by Enerpac
Authorized Service Center.
5. Ram advances but does
not hold pressure.
Check valve not working. Have jack inspected and repaired by Enerpac
Authorized Service Center.
6. Visible oil leakage on
jack housing and/or
components.
Seal wear and/or internal
damage. Have jack inspected and repaired by Enerpac
Authorized Service Center.
Note: A small amount of oil residue on the surface
of the ram is normal during routine jack operation.
7. Ram will not retract or
retracts slowly.
Release valve is closed. Open release valve.
Reservoir overfi lled. Drain oil to correct level. Refer to Section 6.1.
Internal damage. Have jack inspected and repaired by Enerpac
Authorized Service Center.