A Series Diesel Engine Base Engine Components 219
Remove the valves and clean lapping compound from
the valves and seats.
Measure the valve seat width indicated by the lapped
surface.
Valve Seat Width Limit
Intake:
Standard: 1.73 mm [0.0681 in]
Worn Limit: 2.23 mm [0.088 in]
Exhaust:
Standard: 2.12 mm [0.083 in]
Worn Limit: 2.62 mm [0.103 in]
Valve Springs – Inspection
Measure the valve spring.
Limits
Approx. Free Length (L): 46.1 mm [1.815 in.]
Check the valve spring tension.
A minimum load of 299.5 N. [67 lb] is required to
compress the spring to a height of 29.85mm [1.175 in].
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