.
45
Faults
characters
Reason analysis
Trouble Shooting Methods
Swing
speed
reducer
is
nois
y
and/
or
unworkable
The bearing in the speed
reducer damaged
Check and repair
Speed reducer gear wearing
Speed reducer gear damaged
pear-shaped pin loose or fall off
O
il
pipe
leaking
Hydraulic pressure too high
Adjust the pressure
Oil pipe damaged
Replace the oil pipes
Overworking frequent
Operate by the explanations
Hydraulic oil
emulsionize or
deep color
Hydraulic
oil
moisture
content
is
too
much
Change hydraulic oil
A
cid
value,
Excessive
impurity
Warm, filter or replace
Hydraulic
oil
use
d for too
long
of
time. Change hydraulic oil
Hydraulic oil
temperature too
high
Hydraulic
oil
selection
is
unsuitable
,
viscosity
too
high
and
or
too
low.
Select
only
the
recommended
hydraulic
oil
Overworking
frequent
ly
Correct operation
Gear pump parts wearing, inner
leaking too big
Readjust, reassemble
Hydraulic system
unworkable
Inner
piston
of
distributor
mechanism and pressure valve
wearing or locked
Replace piston
Rotat
ion of
oil
pum
p incorrect
Change sealing element
T
he
direction
of
gear
pump
incorrect
Change the suitable gear pump
Hydraulic system
delivery capacity
lacking
Hydraulic oil level too low
Fill
the
hydraulic
oil
Trap valve blocked, breath
resistance too much
Replace filter
Gear pump wearing
repair
Oil temperature too high
Reduce
oil
temperature
by letting machine rest
Some
joints
of
the
oil
suction
tube
turning
,
caus
ing
air
breathing
and
lead
to
the
gear
pump
wearing
Tighten joints, prevent leaking.
U
neven
flow
exists
in
the
filter
or
hydraulic
system
Replace
the
filter,
clean
out any
dirt,
and
keep
the
oil
clean.
S
eal
and
sealing
ring
of
r
otat
ing parts
damaged
or
blocked
Replace
rotat
ing parts
sealing
rings
Swing speed
reducer leaking
The
oil
seal
in
the
speed
reducer
wearing
Replace the oil sealing
