YANGDONG Y490D User Manual

O P E R AT I O N & M AI N T E N AN C E M AN U A L
46
2、 Power Insufficiency
cause
remedies
1 Compress pressure in cylinder is too
low
Reference to fifth solution of first fault, replace a
new part if exceed its wear limit
2 delivery fuel advance angle incorrect
Adjust according to specifications
3 clearance between air valves is
incorrect
Adjust according to specifications
4 fuel supply imbalance among every
cylinder
Adjust injection pumps to proper supply
5 air filter blocked
Clean
6 fuel injection pumps, fuel injector sets
worn off or fuel injection pressure
incorrect
Replace them with new patrts,adjust fuel injection
pressure and check fuel spray
7 speed incorrect
adjust the speed control handle, make the
speed to reach rated speed
3、 Smoking Exhaust
causes
remedies
1 over load
reduce the load, if they are unsuitable
matching , adjust it
2 spray instruction ill
check the spray pressure and atomization, if
the
fuel pump is damaged, replace it
3 inferior quality of fuel
Use eligible fuel
4 combustion incomplete
Main reason is :fuel pump atomizes bad,
delivery fuel advanced angle incorrect ，
leakage at cylinder cover gaskets and low
compression pressure. solute in accordance
with specific problems

YANGDONG Y490D Specifications

General

Brand	YANGDONG
Model	Y490D
Category	Engine
Language	English