4
TROUBLESHOOTING
Symptom
Possible Cause
Corrective Action
1.
5
elease valve is open
1. Close release valve
.
/
ow
no oil in reservoir
. Fill with oil and
E
leed s
\
stem
3. Air-loc
N
ed s
\
stem
3.
%
leed s
\
stem
4.
/
oad is a
E
ove capacit
\
of
M
ac
N
4.
8
se correct equipment
.
3
ac
N
ing worn out or defective
. Install seal
N
it
Jac
N
lifts onl
\
partiall
\
1. Too much or not enough oil
1. Chec
N
oil level
Jac
N
advances slowl
\
1.
3
ump not wor
N
ing correctl
\
1. Install seal
N
it, or replace power
unit
1. C
\
linder pac
N
ing is lea
N
ing
1. Install seal
N
it
. Valve not wor
N
ing correctl
\
suction, deliver
\
, release, or
E\
pass
. Inspect valves. Clean and repair
seat surfaces
3. Air-loc
N
ed s
\
stem
3.
%
leed s
\
stem
Jac
N
lea
N
s oil
1.
:
orn or damaged seals
1. Install seal
N
it
Jac
N
will not retract
1.
5
elease valve is closed
1. Open or clean release valve
Jac
N
does not lift
Jac
N
lifts load,
E
ut doesn't
hold
