Operation Manual of WEICHAI GENSET
4
Fault of shutdown solenoid valve
Check and replace the shutdown
solenoid valve
Check the oil return pipe for
5
The oil return pipe is blocked
blockage, twisting or sinking, and
replace it if necessary
5. Insufficient output power of diesel engine
S/N Fault
Treatment method
1
The engine load is excessive Reduce the load or select a diesel
compare to its rated power
engine with higher rated power
2
High temperature or altitude results Consult the sales staff to correct the
in low air flow
set power
3
Leakage of air intake system
Find out the fault point, and
conduct repair or replacement
4
The intake manifold is blocked
Clean the intake manifold and
replace it if necessary
5
Fault of air filter
Clean the air filter and replace it if
necessary
Remove the carbon deposit in the
6
The exhaust pipe is blocked
exhaust manifold, and replace the
manifold if necessary
Remove the carbon deposit in the
7
The silencer is blocked
silencer, and replace the silencer if
necessary
8
The exhaust turbocharger is blocked Clean the exhaust turbocharger and
or the impeller is damaged
replace it if necessary
Wear of piston ring causes
9
insufficient compression pressure Replace the piston ring
of cylinder
10
The intake and exhaust valves are
not tightly sealed, causing leakage
during compression
Contact after-sales service
personnel for repair or replacement
11
The valve spring is damaged, Contact after-sales service
making valve return difficult
personnel for repair or replacement
12
The valve clearance is incorrect Contact after-sales service
causing air leakage
personnel for repair or replacement
The damage of cylinder head gasket
13
causes air leakage at the joint
surface between the cylinder head
Replace the cylinder head gasket
and the engine block
14
The oil supply advance angle is Contact with after-sales service
60
