.
4
3
Chapter Eight
：
Common faults and trouble shooting
Faults characters
Reason analysis
trouble shooting methods
Power reducing
Engine output lacking
Check and repair
Oil pump wearing
Check and replace
Incorrect adjustment of the
distributing
valve
or
main
spillover valve
Adjust the pressure to the correct
extension
Working oil mass lacking
Check from the oil system leaking and
parts wearing
O
il
suction
tube
letting in
air
Release any
air
in
the
system,
tighten
the
joints
checking
or
change
the
sealing
elements.
Badly working
Some
thing
wrong
with
the
oil
pump
Check and replace
Oil
pump
draining
slow
Check
the
oil
quality,
the
oil
pump
wearing,
the
sealing
elements
,
etc
.
R
eplace
them
if
necessary.
Swing pressure
lacking
Adjust
pressure
if
the
cushion
valve
is
reducing
Adjust the pressure to the correct extension
Oil
motor
performance
decreasing
Check and replace
Swing bearing damaged
replace
Train stop
not working
Adjust
pressure
of
the
cushion
valve
i
f
reducing
Adjust the pressure to the correct extension
Oil
motor
performance
decreasing
Check and replace
Unusual noise of
swing
Big and small gear grease
lubricant lacking
Filling grease
Oil
motor
performance
decreasing
Check and replace
S
pillover
valve
pressure
is
too
low
Adjust the pressure to the correct extension
Cu
shion
valve
adjust
pressure
is
too
low
Adjust the pressure to the correct extension
Oil
motor
performance
decreasing
Check and replace
Travel force lacking
Central swing joints sealing
damaged
Replace
Travel
unlight-footed
There are stones in the crawler.
Remove the sundries as adjustment
Crawler excessive tension
Adjust it to the correct extension
C
ushion
valve
adjust
pressure
unsuitable
Adjust pressure to the correct extension
Oil
motor
performance
decreasing
Check and replace
