utts
Tools
B
.com
JHM Butt & Co Ltd
T:
01302 710868
F:
01302 719481
E:
info@
butts
equipment.com
www.
butts
equipment.com
W:
TROUBLESHOOTING GUIDE
Repair procedure must be performed in a dirt-free environment by qualified personnel who are familiar
with this equipment.
CAUTION:
To prevent personal injury, all inspection, maintenance, and repair procedures must be
performed when the jack is free of a load (not in use).
PROBLEM
CAUSE
SOLUTION
Jack Doesn’t Lift
1. Release valve is open
2. Low/no hydraulic fluid in
reservoir
3. Air-locked system
4. Load is above capacity of jack
5. Delivery valve and/or bypass
valve Not working correctly
6. Packing worn out or defective
1. Verify the release valve is closed by
position of handle. Releasing valve may
need cleaning.
2. Fill with approved hydraulic fluid and
bleed system.
3. Bleed system.
4.
Use correct equipment.
5.
Clean to remove dirt or foreign matter.
Replace hydraulic fluid.
6.
Replace packing
Jack only lifts partially
1. Too much/not enough hydraulic
fluid
1.Check hydraulic fluid level.
Jack advance slowly
1. Pump not working correctly
2. Leaking Seals
1. Rework pump
2. Replace seals
Jack lifts load, But
doesn’t hold
1. Cylinder packing is leaking
2. Valve not working correctly
(suction, Delivery, release, or
bypass)
3. Air Locked System
1. Replace packing
2. Inspect valves. Replace if necessary
3. Bleed system
Jack leaks hydraulic fluid 1. Worn or damaged seals
1.Replace seals
Jack will not retract
1. Release valve is closed
1. Open the release valve by pulling on
and turning the handle clockwise. May
be necessary to clean release valve.
Jack retracts slowly
1. Cylinder damaged internally
2. Return springs(s) is damaged
3. Link section is binding
1. Send jack to authorized service center
2. Replace return spring(s)
3.Lubricate link sections.
©JHM BUTT & CO LTD 2013
