Operation and Maintenance Manual and User Service Guide for Industrial Power WP10 Series Diesel Engine
37
S/N
Cause
Troubleshooting
3
Others
(1) Intake valves and exhaust valves
are leaked.
Grind or readjust the valve clearance.
(2) Cylinder leaked.
Check each cylinder gasket, and then
tighten nuts on the cylinder head.
(3) Valve spring is fractured.
Replace it.
(4) Piston rings leak
Replace the leaked piston ring.
(5) Piston is stuck with cylinder.
Remove and repair it.
(6) There is water accumulated in
cylinder.
Remove the cylinder head for
dewatering, and then find out the
cause.
(7) For air starter, timing of air
distribution disk is wrong.
Remove for reinstallation.
6.2 The diesel engine can not output stipulated power
S/N
Causes
Troubleshooting
1
Operation
(1) Rotating speed is low.
Adjust to rated speed.
(2) The local altitude or ambient temperature
is too high.
Refer to GB standard
“Power
Correction Table” for correcting
the output power.
2
Fuel system
(1) Fuel injector failed (nozzle is clogged;
atomization is poor; fuel injection pressure is
not insufficient; the height of nozzle
protruding from the cylinder head is not
correct)
Refer to the specifications to
adjust or repair the fuel injector.
(2) Fuel injection pump unevenly pumps the
fuel or some pump does not work.
Adjust the amount of fuel
injection or repair the fuel
injection pump.
(3) Fuel injection pump wears, unable to
pump enough fuel.
Properly screw out the limiting
screw on adjusting rack in fuel
injection pump; increase the
flow of fuel injection or replace
with the new plunger and barrel
assembly.
