1
Fig.
1-51
Fig. 1-
52
fig.
1-
53
Fig.
1-54
1 :
15
1-C-25.
Checking
Main
Bearing
Clearance
Check the main bearing clearance in the same manner
for the connecting rod bearing clearance.
Note the following differences :
I.
The main bearing clearance
is
0.031 - 0.050 mm
(0.0012 - 0.0020
in).
Correct
if
the clearance exceeds 0.08
mm
(0.0031
in).
2.
The tightening torque
of
the bearing cap bolts
is
8.4
- 9.0 m·kg
(61
-
65
ft-lb) .
1-C-26
. Checking Crankshaft End
Pla
y
Check the end play
with
a dial indicator
or
a
feele
r
gauge.
The standard end play
of
the crankshaft
is
0.08 -
0.24
mm
(0.003 - 0.009
in).
Correct if
the-end
pl
ay
exceeds
0.3
mm
(0.012
in).
The end play can
be
adjusted by the thrust washers
located at the rear
of
the crankshaft.
Thrust bearings are available in the oversize
of
0.25,
0.
50
and 0.
75
mm
(0.010, 0.020
and 0.030
in).
1-C-27
. Checking Camshaft
Clean the camshaft with a suitable solvent.
Check
to
see
that the cam
faces
and journals are smooth
and are not scored or worn.
Measure the cam height with a micrometer and replace
the camshaft if it
is
not within the specification.
Standard :
Inlet
Exhaust
Limit:
Inlet
Exhaust
45.037
mm
(1.7731 in)
45.004
mm
(1.7718 in)
44.837 mm (1.7653 in)
44.804
mm
(1
.7640 in)
Measure the diameter
of
the camshaft journals.
Wh
en
they are worn more than
0.
05
mm (0.0020
in), grind
the journals to the undersize
of
0.25, 0.
50
or
0.75
mm
(0.010, 0.020
or
0.030
in).
The standard diameters
of
the journals are in the
following table.
Front
45 -
0.040
(1 7717
-
0.0016.
)
-
0.055
mm
·
-
0.0022 m
Center 45
-
0.050
mm
(1
7717
-
0.0020
in)
-
0.065
. -
0.0026
Rear
45 -
0.040
mm
(1
7717 -
O.
OO
l
6
in)
-
0.055
. -
0.0022
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