01:01-02
©
Scania CV AB 1997-05:2 5
Program 96
Valve clearance
Checking and adjusting
Check valve clearance. The clearance for intake
valves should be 0.45 mm and the clearance for
exhaust valves should be 0.80 mm when the
engine is cold.
Adjustment can be carried out in one of the fol-
lowing ways:
A. Adjust both valves in each cylinder starting
with No. 1 cylinder at TDC after compression.
Turn the crankshaft 1/3 turn at a time and adjust
valves in injection sequence:
1-5-3-6-2-4
B. Set No. 1 cylinder at precisely TDC after com-
pression. The following valves can now be
adjusted:
cylinder 1 intake and exhaust
cylinder 2 intake
cylinder 3 exhaust
cylinder 4 intake
cylinder 5 exhaust
Turn the crankshaft precisely one revolution so
that TDC for No. 6 cylinder is set. The remaining
valves can now be adjusted:
cylinder 2 exhaust
cylinder 3 intake
cylinder 4 exhaust
cylinder 5 intake
cylinder 6 exhaust and intake
Intake valve
Exhaust valve
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