SUNWARD SWE20B - Track and Heater Issues

89
Heater Malfunctions and solutions
Malfunction
feature
Reason Resolution
Track of one side
doesn’t work or
move very slowly
(serious deflexion
of traveling)
1． Control pilot valve malfunction
2． Corresponding commutator valve and
stop valve malfunction
3． Center connector seal damage
4． Hydraulic motor malfunction
5． Travel redactor fault
6． The displacement of two-gang hydraulic
pump is not equal
1． Repair
2． Consult with the dealer
3． Consult with the dealer
4． Consult with the dealer
5． Consult with the dealer
6． Consult with the dealer
The hydraulic oil
temperature rises
too fast or becomes
too high
1． There is dirt on the surface of oil cooler.
2． Wear of hydraulic parts and reduction of
the cubage efficiency.
3． Overfall valve and over load valve
opens too frequently
1． Clean
2． Contact the dealer。
3． Over digging ， over
loading, change the
digging method.
Some unexpected
actions occur
without operating
1．Multitandem valve lever block.
2．Pilot valve core block.
1． Contact the dealer
2． Contact the dealer
Mandril leak at the
top of pilot valve
Seal ring of the pilot valve mandril piston
trepan boring aging or damage
Inspect and replace
Work device
malfunction
Usually caused by the block of multitandem
valve lever’s one way valve
Inspect and replace
Malfunction Description Check Solution
Heater unit stops
working.
Air blower stops
running.
A. Circuit break.
B. Bad grounding.
Check and repair Check
and repair
Heating effect is
not good.
Air blower
works normally.
A. Hot water tube
circuit block.
B. Heavy dust on heater
core surface.
Check tube circuit.
Clean core surface.