Troubleshooting - ATD Tools ATD-7437A Owner's Manual

Symptom
Jac does not lift
Jac lifts onl partiall
Jac advances slowl
Jac lifts load, ut doesn't
hold
Jac lea s oil
Jac will not retract

TROUBLESHOOTING

Possible Cause
1. elease valve is open
. ow no oil in reservoir
3. Air-loc ed s stem
4. oad is a ove capacit of ac
. ac ing worn out or defective
1. Too much or not enough oil
1. ump not wor ing correctl
1. C linder pac ing is lea ing
. Valve not wor ing correctl
suction, deliver , release, or
3. Air-loc ed s stem
1. orn or damaged seals
1. elease valve is closed
4
Corrective Action
1. Close release valve
. Fill with oil and leed s stem
3. leed s stem
4. se correct equipment
. Install seal it
1. Chec oil level
1. Install seal it, or replace power
unit
1. Install seal it
. Inspect valves. Clean and repair
pass seat surfaces
3. leed s stem
1. Install seal it
1. Open or clean release valve