OTC Tools 1511B - Troubleshooting Guide

Troubleshooting Guide
Repairproceduresmustbeperformedinadirt-freeenvironmentbyqualiedpersonnelwhoarefamiliarwith
thisequipment.
Trouble Cause Solution
Jack does not lift. 1. Release valve is open.
1. Close release valve.
2. Low/no oil in reservoir.
2. Fill with oil and bleed system.
3. Air-locked system.
3. Bleed system.
4. Load is above capacity of jack.
4. Use correct equipment.
5. Delivery valve and/or bypass
5. Clean to remove dirt or foreign matter.
Replace oil.
6. Packing worn out or defective.
6. Install seal kit.
7. Leak in air line.
7. Locate leak; tighten connections or replace
hose.
8.Inadequateairpressure.
8. Set air pressure to 85–142 psi.
Jack lifts only
partially.
1. Not enough oil.
1. Add oil.
Jack advances
slowly.
1. Pump not working correctly.
1. Install seal kit, or replace power unit.
2. Leaking seals.
2. Install seal kit.
Jack lifts load, but
does not hold.
1. Cylinder packing is leaking.
1. Install seal kit.
2. Valve not working correctly
(suction, delivery, release, or
bypass).
2. Inspect valves. Clean and repair seat
surfaces.
3. Air-locked system.
3. Bleed system.
Jack leaks oil. 1. Worn or damaged seals.
1. Install seal kit.
Jack will not
retract.
1. Release valve is closed.
1. Open or clean release valve.
Jack retracts
slowly.
1. Cylinder damaged internally.
1. Send jack to OTC authorized service center
for repair.
2. Link section is binding.
2. Lubricate link section.
Air motor will
not run or runs
erratically.
1. Leak in air line.
1. Locate leak, tighten connections, or replace
hose.
2.Inadequateairpressure.
2. Set air pressure to 85–142 psi.
3. Air piston is sticking.
3. Lube air motor by adding a small amount of
oil to jack’s air inlet.
Refer to any operating instructions included with the product for detailed information about operation, testing,
disassembly, reassembly, and preventive maintenance.
Items found in this parts list have been carefully tested and selected by OTC. Therefore: Use only genuine
OTC replacement parts.
Parts List & Operating Instructions Form No. 565786, Sheet 3 of 3, Back