Check The Valve Lifters And Their Bores - Nanni T4.155 Workshop Manual

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indice A
e. Remove the bearing caps.
f. Measure the widest part of the plastigage.
Nominal lubrication clearance:
Lubrication clearance limit:
Only replace the cam shaft if the maximum limit is exceeded. Replace
bearing caps and the cylinder head as a matched pair if necessary.
g. Carefully remove all signs of the plastigage
F. Check the cam shaft axial clearance
a. Reinstall the cam shaft.
b. Measure the cam shaft axial clearance with a dial gauge by
moving the cam shaft from back to front.
Nominal axial clearance:
Axial clearance limit:
Replace the cam shaft if the axial clearance limit is greater than the limit
recommended in specifications. If necessary, replace the bearing caps
and the cylinder head as a matched pair.
11. CHECK THE VALVE LIFTERS AND THEIR
BORES
a. Measure the inside diameter of the cylinder head valve lifter bore
using a dial gauge.
Lifter inside diameter:
b. Measure the diameter of the valve lifter using a micrometer.
Valve lifter diameter:
4 CYLINDERS WORKSHOP MANUAL
0.025 – 0.062 mm
0.10 mm
0.08 – 0.18 mm
0.25 mm
40.930 – 40.950 mm
40.892 – 40.902 mm
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