Fig.
1-55
Fig, 1-
56
Fig.
1-57
Fig.
1-
58
1
1-C-28.
Checking
Camshaft
Run-Out
Check the camshaft run-0ut with a dial indicator.
The maximum permissible run-
out
is
0.
03
mm
(0.0012
in).
If
it
is
not
within specification, replace
the
camshaft
with new one.
1-C-29
.
Camshaft
Bearing
The camshaft bearings are classified into 3 types. The
camshaft bearings are available in the standard size
and undersize
of
0.25, 0.50
and
0.75
mm
(0.010, 0.020
and
0.030 in).
Inspect the bearings carefully for wear, scoring, flaking
or
any damage.
If
any
of
these conditions -exists, replace
with new bearings.
Each bearing consists
of
two halves and should be
replaced
as
a set.
1-C-30
.
Checking
Camshaft
Bearing
Clearance
Check the camshaft bearing clearance in the same
manner for
the
connecting rod bearing clearance.
Note
the
following differences:
1. The standard camshaft bearing clearance are
0.019
- 0.069
mm
(0.0007 - 0.0027 in) for the front and
rear, and
0.029 - 0.079
mm
(0.0011 - 0.0031 in)
for the center.
Correct
if
the
clearance exceeds 0.15
mm
(0.0059 in).
2. The tightening torque
of
the
bolts are 8.2 -
8.8
m-
kg
(59 -
64
ft
-lb).
1-C-31.
Checking
Camshaft
End
Play
The end play
of
the camshaft
is
determined by the
clearance between the sprocket surface and the thrust
plate surface.
Measure this clearance with a feeler gauge. This clearance
should be
0.
02
- 0.18
mm
(0.001 - 0.007 in).
If
the
end
play exceeds 0.
20
mm
(0.008 in), replace with a new
thrust plate.
1 : 16
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