QUANCHAI N485D, Руководство по обслуживанию

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ANHUI QUANCHAI ENGINE CO., LTD
4.Cylinder compression pressure being insufficient
Seque
nce
No.
Position
tested
Normal Abnormal
1
Intake and
exhaust
valves
The clearance of intake and exhaust
valves is adjusted correctly.
Check whether the valve is sealed
properly; grind the valve.
2 Valve spring
The valve spring is normal and
unbroken. Move the piston to top dead center
and replace the valve spring.
3
Valve
clearance
The intake valve clearance is 0.3 mm,
and the exhaust valve clearance is 0.35
mm.
Adjust the valve clearance.
4 Piston ring
There is no carbon deposit on the piston
ring, and the piston ring works normally
without jams or wear.
Clean up carbon deposit or replace
the piston ring.
5
Cylinder head
gasket The cylinder head gasket is in good
condition without air leakage.
Tighten the cylinder head bolt.
Replace the cylinder head gasket
if it is damaged.