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
47
4、 Knocking Noise in Engine
causes
remedies
1 delivery fuel advance angle is incorrect
Adjust the angle according to the specification
2 air in fuel system
Exhaust air
3 fuel supply imbalance among every
cylinder
Adjust injector pump to proper supply
4 inferior quality fuel
replace to eligible fuel
5 parts are worn exceed itself limit
replace the part
5、 Lube Oil Insufficiency Or No Pressure
1 oil lever in oil sump too low
Add oil up to mark line on dip sticks
2 serious leakage from oil pipelines
Eliminate leakage
3 extract oil filter, oil filter and pipe
blocked
Clean, or replace filter core
4 oil gauges damaged or gauge pipe
blocked
Repair or replace it
5 oil is too dilute
use the eligible oil
6 oil pump gears seriously worn off, with
excessive clearance
Adjust the clearance or replace them
7 pressure relief valves of oil filter cease
to function
Check and repair or replace it
8 main bearings connecting-rod bearings
and camshaft bushing seriously worn off
with excessive clearance
Repair or replace them

YANGDONG Y490D Specifications

General

Brand	YANGDONG
Model	Y490D
Category	Engine
Language	English