TROUBLE
SHOOTING
GUIDE
OF
HYDRAULIC
PUMP
The
pump
can
'
t
be
started
The
voltage
isn
'
t
suitable
Checked
the
input
air
,
switch
and
distribution
box
and
so
on
,
and
connect
the
air
.
Confirming
whether
the
voltage
is
suitable
for
the
pump
'
s
need
The
power
hasn
'
t
be
connected
The
system
has
no
pressure
The
quick
coupler
hasn
'
t
be
connected
to
the
correct
position
Take
down
and
reinstall
it
No
oil
in
the
oil
reservoir
Fill
in
oil
Not
enough
oil
in
the
oil
reservoir
Fill
in
oil
If
the
system
has
a
throttle
and
hand
single-direction
valve
,
please
check
if
the
valve
are
open
Open
the
throttle
and
hand
single-direction
valve
,
and
make
sure
the
system
is
a
circle
After
reinstalling
the
quick
coupler
,
the
system
has
no
pressure
The
quick
coupler
can
'
t
be
connected
to
the
correct
position
,
which
causes
no
pressure
in
the
system
Take
down
the
quick
coupler
,
check
if
the
boll is elastic with a rod, if it can't
move
,
please knock it with a hammer to
eliminate
the
mist
hydraulic
oil
Leakage
in
the
quick
coupler
The
o
ring
and
escape
have
worn
out
Replace
the
quick
coupler
The
pressure
can
'
t
reach
to
the
set
pressure
The
relief
valve
is
adjusted
too
low
Check
with
the
gauge
,
and
adjust
the
relief
valve
to
the
system
set
pressure
Oil
is
mixed
with
water
Change
oil
Not
enough
oil
in
the
reservoir
Fill
in
oil
Repeat
operating
the
system
with
no
load for several times to eliminate the air
Suck
in
air
to
the
system
The
throttle
and
hand
single-direction
valve
haven
'
t
been
tightened
Locking
valve
The
throttle
and
hand
single-direction
valve
haven
'
t
been
adjusted
to
the
correct
position
Adjust
to
the
correct
position
The
throttle
and
hand
single-direction
valve
have
broken
Replace
the
valve
There
is
foreign
matter
in
the
oil
Wash
the
pump
valve
and
change
clean
oil
When
using
under
static
pressure
,
the
pressure
reduces
slowly
The
seal
is
out
of
control
,
please
check
all
the
seal
Replace
the
seal
Pump
during
operation
with
strong
noise
Radial
plunger
pump
bearing
damage
Replace
the
radial
plunger
8
