5. Inspection and servicing of basic engine parts
210
(3) Camshaft and bearing hole measurement
Measure the camshaft outside diameter with a
micrometer. The oil clearance shall be
calculated by subtracting the measured
camshaft outside diameter from the inside
diameter of the camshaft bearing or bushing.
The camshaft bushing at gear case side is
measured with a cylinder gage after insertion
to the cylinder.
Replace if they exceed the limit or are
damaged.
(4) Bending of the camshaft
Support both ends of the camshaft with V-
blocks, place a dial gauge at the central
bearing areas and measure bending. Replace
if excessive.
Note:
The reading on the dial gauge is divided by
two to obtain the camshaft bend.
mm
Place Item Standard Limit
Gear side
(with metal)
Bushing
I.D.
44.990-45.055 45.130
Camshaft
O.D.
44.925-44.950 44.890
Oil
clearance
0.040-0.130 0.240
Intermediate
position
(metal less)
Shaft hole
I.D.
45.000-45.025 45.100
Camshaft
O.D.
44.910-44.935 44.875
Oil
clearance
0.065-0.115 0.225
Flywheel
side
(metal less)
Shaft hole
I.D.
45.000-45.025 45.100
Camshaft
O.D.
44.925-44.950 44.890
Oil
clearance
0.050-0.100 0.210
mm
Standard Limit
Camshaft bend 0.02 or less 0.05
007709-00X
Camshaft
central bearing area
006567-01E
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