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Camshaft
Assembly
1. Remove the cylinder head pressure plate bolts, and take out the cylinder head pressure plate, rocker shaft, intake and exhaust
rocker arms, and camshaft.
2. Use the valve spring removal and installation tool to remove the valve lock clip (do not over compress
the valve spring). After
taking out the valve lock clip, remove the valve spring retainer, valve spring, valve stem diameter oil seal (the
removed valve
stem diameter oil seal cannot be used again)
, valve spring seat, and valve in sequence.
Inspection
1. Check that there is no bump or scratch on the joint surface of the cylinder head;
2. Check that there is no abnormal wear on the intake and exhaust rocker shafts;
3. Check that the intake rocker arm (mark I
) and the exhaust rocker arm (mark
E
) have no abnormal wear, and the rollers of the
intake and exhaust rocker arms rotate smoothly without abnormal noise;
4. Check that the intake and exhaust springs have no cracks or abnormal wear;
5. Check whether the camshaft is abnormally worn, and the fluorine rubber O-ring is not damaged or trimmed. Turn the
camshaft bearing by hand, and it should rotate smoothly without abnormal noise.
6. Check whether the diameter of the valve stem is abnormally worn, bent or ablated, and whether the valve can move smoothly
in the valve guide; check whether the surface of the valve seat is abnormally worn or ablated; ablation;
7. Check the cylinder head bearing. The inner ring of the bearing should rotate smoothly without any stagnation. If the inner ring
of the bearing is stuck, please replace the cylinder head bearing.
camshaft bearing
Fluorine rubber O-ring
Exhaust rocker arm logo
Intake rocker arm logo
M6×105 bolts
M8×1.25 nut
Identifier I
