Maintenance
(a) Visual inspection MUST be made prior to each use of jack. Check for cracks, cracked welds,
missing or damaged parts.
(b) Keep all moving parts clean and well lubricated.
(c) Owners and/or operators should be aware that repair of this equipment may require specialized
knowledge and facilities. It is recommended that an annual inspection of the product be made
by a manufacturer or supplier’s authorized repair facility and that any defective parts, decals, or
safety labels and signs be replaced with manufacturer or supplier’s specified parts.
Problem
Possible Cause
Remedy
Saddle won’t rise
Lifts only half way
Lifts, then lowers out
of control
Erratic lift.
1.
Release valve open.
2.
Oil Exhausted.
3.
Defective suction
and/or exhaust valve.
4.
Packing worn out or
defective.
1.
Insufficient oil.
1.
Air in system.
2.
Defective suction
and/or release valve.
3.
Defective piston
packing.
1.
Defective plunger
packing and/or valve.
1.
Tighten release
valve.
2.
Fill tank with oil.
3.
Check for dust or
foreign matter
inside and clean.
4.
Replace packing.
1.
Check oil supply
and fill.
1.
Open oil plug on
the front of
cylinder. Hold
saddle down. Open
release valve and
pump handle
several times.
2.
Clean valves and
adjust valve
contact.
3.
Replace the piston
packing.
1.
Clean valves
and/or packing.
Troubleshooting
1-800-345-4545 jegs.com
