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Notice:
1. In order to prevent the permanent
deformation of the valve spring, the valve
spring cannot be compressed excessively,
and only the valve lock clip can be
removed;
2. All the removed parts should be
marked to ensure that the original assembly
position is reached during assembly.
Inspection of valves and valve
springs
1. Check whether the valve is bent or the
valve stem has abnormal wear, and measure the
outer diameter of the valve stem. Repair limit:
Air intake:
φ
4.96mm
Exhaust:
φ
4.94mm
2. The width maintenance limit of the
contact surface: 1.5mm
Notice:
If the valve contact surface is rough, the
abrasion is uneven or the contact with the
valve seat is abnormal, and the sealing
performance cannot be guaranteed, the
valve should be replaced.
3. Check whether the valve spring is abnormally worn,
and the measurement is free
length. Repair limit:
Outer spring: 39.75m
Inner spring: 36.85mm
Inspection of rocker arm and rocker
arm shaft
Check the rocker arm for abnormal wear, the axial
direction of the rocker arm roller
Whether the clearance and rocker rollers have eccentric
wear, such as wear, damage
If the phenomenon is serious or the axial clearance of the
rocker roller is too large, more
Replace with a new rocker arm.
Inspection of Camshaft Components
