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486 PL ENGINE
P
Cam Shaft Inspection
Carry out visual inspection of cam shaft for
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Over heating of journals, indicated by bluish/
brown colour.
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Deep scoring marks an journal and cam lobes.
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Cracks, which should be checked on a
magnetic crack detector.
Check hardness of cam shaft journals and cam
lobes
Check cam shaft run out at 2nd 3rd & 4th journal by
supporting on V-block at 1st & 5th journal. Fig. 103
Check cam shaft journal dimensions.
Inspect hydraulic tappets for scoring marks and
proper functioning of hydraulic plunger. Fig. 104
Check for clear oil passage.
Fig. 105
Fig. 104
Fig. 103
Hydraulic
Plunger
Bottom
Pad
Top Pad
Inspect hydraulic chain tensioner for proper
functioning of hydraulic plunger. Fig. 105
Check for clear oil passage.
Check for fitment of
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Exhaust manifold studs.
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Inlet manifold studs.
l
Bearing cap studs.
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Bent, damaged studs should be replaced
Check for fitment of anti-drain valve, on the face of
the cylinder head mating with the crank case.