OPERATION & MAINTENANCE MANUAL SWE18UF
107
The malfunction reason and repair
manner of the engine, please refer to
YANMAR 3TNV80-SSSU ENGINE OPERATION
MANUAL.
Only authorized people can disassemble
and repair the hydraulic parts, please
consult with manufacturer if mentioned
works is necessary.
6. TROUBLESHOOTING
If malfunction occurs, stop machine immediately, analyze the reason and adjust or repair the machine as
following methods, objects and order.
Malfunctions and 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.
Control levers don’t work or
work slowly.
1．The machine is out of use for a
long time, air separates from oil
and floats in pilot control pipeline
and hydraulic cylinder, etc.
2．No pressure or exceeding pressure
in pilot system.
3．Low hydraulic oil temperature and
high viscidity of hydraulic oil
4．Hydraulic pump malfunction.
5．Main safety relief valve
malfunction
1．Operate control levers for
several times.
2．Check hydraulic control
system, low-pressure relief
valve, and gear pump.
3．Warm up machine.
4．Consult with your dealer.
5．Consult with your dealer.
A cylinder doesn’t work or
work slowly.
1．Corresponding pilot valve
malfunction
2．Corresponding reversing valve
malfunction
3．Corresponding overload valve
malfunction
4．Hydraulic cylinder rod damaged
5．Hydraulic cylinder interior seals
damaged
1．Repair
2．Consult with your dealer
3．Consult with your dealer
4．Consult with your dealer
5．Replace oil seals
To Next Page
Loading...
