SWE90UF-2PB Operation & Maintenance Manual
5.6.2 Troubleshooting
The machine should be stopped immediately, if there is a fault or the machine cannot operate, try to
analysis and eliminate, there are many causes for hydraulic system faults, try your best to according the
following ways, items and sequence to maintain, adjust and repair.
【Important】:
Please contact with Sunward about the disassembly and repair of hydraulic components in hydraulic system,
users are not allowed to do that without authorization.
Note:
Failures and solutions please refers to Yanmar Engine Operation and Maintenance Manual, because the
fault code of electronic-control engine will be showed in the meter, please refer to following fault codes to
check reasons.
Malfunctions and Solutions
Engine runs but
it’s difficult to
start or fails to
start.
Out of fuel.
Mistake type or brand of
fuel or it’s polluted.
Defective wiring.
Insufficient battery power
Air filter clogging.
Fuel filter clogging.
Internal leakage in fuel
system
Fuel manual pump spring
up
Air gets into fuel system
Add fuel
Bleed the air from fuel system
Drain out the off-grade fuel. Fill with proper
fuel
Check starting circuit, clear the problem
Charging or replace new battery.
Clean filter or replace new filter.
Clean up filter or replace with new filter.
Bleed air in fuel system
Check and repair leaks
Push down and secure hand wheel
Use manual pump to bleed air
Engine fails to
make full use of
power.
Air filter clogging
Fuel piping clogging or oil
deliver malfunction
Improper fuel or pollution
Fuel filter clogging.
Ejection oil nozzle gets
polluted or malfunction
occurs
The clearance of eject pump
linkage out of spec
Clean or replace filter
Clear the problem or replace piping.
Drain the fuel and add proper fuel.
Bleed air in fuel system
Clean or change filter.
Bleed air in fuel system
Contact distributor
Contact distributor
Contact distributor
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