WEICHAI WP10 Series User Manual

Operation and Maintenance Manual and User Service Guide for Industrial Power WP10 Series Diesel Engine
40
5
Each journal severely rubs with bearing bush on
crankshaft, making knocking noise along the
overall length of diesel engine.
Repair or replace it
6
Compression ratio is too high, causing rough
operation and large vibration.
The compression ratio
should be adjusted to
specification.
7
The clearance between the intake valve and exhaust
valve is undersize, or the exhaust or intake timing is
not correct, causing that the valve impacts the top of
piston.
Adjust valve clearance or
timing.
8
Individual cylinder does not work and diesel
engine vibration is aggravated.
Check the fuel system and
solve the failure.
9
The valve is fractured (the valve lock clip is
damaged, valve drops or the piston fractures,
causing sudden or strong knocking noise)
Immediately stop the
engine for inspection.
10
Air leaks from the cylinder head lining, making
howling.
Check the cylinder head nuts
for tightness or replace the
cylinder liner.
11
Wear of each gear is excessive, making knocking
noise.
Check or replace it
12
The fixing bolts attaching to diesel engine is loose
or damaged, causing vibration aggravating.
Tighten or replace the bolts
13
Diesel engine is not coaxial to the connected work
device, aggravating the vibration.
Check and adjust it
14
Uneven foundation causes the deformation of
common base plate.
Check and adjust it
6.5 Diesel operation unsteady
S/N
Cause
Troubleshooting
1
The flyingweight of governor can not move
smoothly, or its clearance widens.
Check for stuck
phenomenon. Refer to the
actual practice for repair or
replacement.
2
The buffer circlip in governor is lack of
elasticity or fractured, making the adjusting
rack shake or unsteady.
Check or replace it
3
Diesel engine speed is too low; with engine
idling at mid speed, two-purpose governor can’t
activate automatically.
Increase to rated speed.
4
The diesel engine load varies frequently.
Check the load output
state.
5
Some cylinder intermittently fires, making the
fuel be accumulated in cylinder and accordingly
Check the fuel system.

WEICHAI WP10 Series Specifications

General

Brand	WEICHAI
Model	WP10 Series
Category	Engine
Language	English