QUANCHAI N485D, Maintenance Manual

Page: 138 / 139

ANHUI QUANCHAI ENGINE CO., LTD
27. Hard to get diesel engine started
Seque
nce
No.
Position
tested
Normal Abnormal
1 Fuel tank
There is sufficient fuel in the fuel tank
and the sediment cup is opened.
Fill in diesel and turn on the
switch.
2 Fuel system
There is no air in the fuel system, no
water in the fuel, and no oil leakage at
the joint.
Discharge air, replace diesel, and
tighten the joint.
3
Oil circuit or
filter
The oil circuit and filter are unblocked.
Clean the pipeline, clean or
replace the diesel filter element,
and clean the fuel inlet pipe of the
fuel supply pump and its filter
screen.
4
Fuel supply
pump and fuel
injection
pump
The fuel supply pump and the fuel
injection pump work normally, and the
advance angle of fuel supply is correct.
Check whether the fuel supply
pump and the fuel injection pump
work normally, and adjust the
advance angle of fuel supply.
5 Fuel injector
The fuel injector works normally while
injecting fuel.
Disassemble and repair the fuel
injector, adjust the injection
pressure on the fuel injector test
bench, and clean, repair or replace
the fuel injector fitting. Replace
the spring.
6
Fuel injection
pump
The fuel outlet valve and plunger fitting
of the fuel injection pump work
normally without wear and tear.
Grind, repair or replace parts.