TROUBLESHOOTING
(USING JACK WITHIN RATED LOAD CAPACITY)
POSSIBLE JACK PROBLEMS
POSSIBLE CAUSES AND
SOLUTIONS
(Refer to Operation and
Maintenance procedures
for detailed information)
Release valve not tightly
closed.
To close or tighten, turn
release valve clockwise.
Air is in hydraulic system.
Release air from system.
Oil level is low in jack
Add oil as required
1. Oil reservoir is over-fi lled
Drain out some oil.
2. Lubrication of moving
parts is necessary.
Power unit is
malfunctioning.
Replace the power unit.
Jack will
not lift
load
Jack will
lift load,
but will
not hold
Jack will
not lower
completely
Poor jack
lifting.
Pump
feels
spongy
Jack will
not lift to
full height
Handle
raises by
itself when
jack is
under load
5
LUBRICATION
• Add lubrication oil to all moving parts
every 3 months.
PREVENTING RUST
• Check Piston Rod & Pump Piston
every 3 months for any signs of rust or
corrosion. Clean as needed and wipe
with an oily cloth.
• When not using the jack, always leave
the saddle & pump piston all the way
down.
KNOW YOUR JACK
Compare these illustrations with your
jack before operation and/or oil level
maintenance to become familiar with
the location of jack components.
RELEASE
VALVE
PUMP PISTON
DOWN
PROPER OIL
LEVEL
OIL FILLER
PLUG
PISTON ROD ALL
THE WAY IN
