OPERATION & MAINTENANCE MANUAL SWE18UF
89
Only authorized people can disassemble and repair the hydraulic parts, please
consult with manufacturer if mentioned works is necessary.
Lower the work equipment or dozer blade to the ground when servicing them and
release the residual pressure of hydraulic system:
Park the machine on level ground, stop the engine, put the pilot control rod
on open position
and shake the pilot operation handle for several circles.
As to malfunction reason and repair
manner of the engine, please refer to the
“
YANMAR
3TNV80F-SSSU
engine
malfunction estimation and maintenance
manual
“
.
6. TROUBLE SHOOTING
If malfunction occurs, stop machine immediately, analyze the reason and adjust or repair the
machine as following methods, objects and order.
Malfunctions and Solutions
Malfunction
Reasons
Solutions
Noisy hydraulic pump and
vibratory pipeline
1
.
Hydraulic malfunction.
2
.
Air bubble in hydraulic
system.
3
.
Aging
hydraulic
oil,
degenerative oil mixed with
moisture, wrong brand and
specification
produce
bubble.
4
.
Low
hydraulic
oil
temperature
and
high
viscidity of hydraulic oil.
1
.
Consult
with
your
dealer.
2
.
Check
whether
air
leakage at oil pump inlet
pipeline.
3
.
Replace oil.
4
.
Run engine in low revs
and then warm up the
engine.