26
Tr
oubleshooting
The handle mo
ves when the
jack saddle is loaded
.
The h
ydr
aulic jack
cannot lif
t the
load
.
The h
ydr
aulic jack
cannot hold the load
.
The h
ydr
aulic jack
cannot lif
t t
o full
heigh
t.
The pump f
eels
spongy dur
ing
use
.
The jack saddle does not fully lo
w
er af
ter a lif
t.
Too little oil in the h
ydr
aulic jack
.
Remo
ve the oil bung and t
op up
with fr
esh h
ydr
aulic oil
.
X
X
X
Remo
ve the oil bung t
o v
en
tila
te
.
X
X
X
Ther
e is air in the h
ydr
aulic
sy
st
em. L
oosen the v
en
ting v
alv
e
a c
omplet
e r
ev
olution. Lif
t the end
with the c
on
tr
ol wheels un
til the
hy
dr
aulic jack is v
er
tical
. P
ump the
handle har
d a f
ew times
. T
igh
ten the
ven
ting v
alv
e.
X
X
X
The v
alv
es ma
y not be closing
.
Tigh
ten the lif
ting ar
m and close
the v
en
ting v
alv
e. P
lac
e one f
oot
on the end with the load wheels and lif
t the lif
ting ar
m up fully using
your hand
. Undo the v
en
ting v
alv
e
to lo
w
er the lif
ting ar
m again.
The
hy
dr
aulic jack should no
w func
tion
nor
mally
.
X
X
X
Pr
oblems
with
the
retur
n
spr
ing
. T
he
lif
ting ar
m is br
oken or has w
or
ked
itself loose
. L
ubr
ica
te or r
eplac
e the
retur
n spr
ing
. Clean and lubr
ica
te all
the par
ts in the lif
ting mechanism.
X
