E N G I N E MECHANICAL
-
Cylinder Block
E M - l 09
I N SPECTION A N D REP A I R OF C A M S H A F T
B E A R I N G S A N D C A M S H A F T
1 .
INS PECT CAMSHAFT OIL CLEARANCE
(a) Using a cylinder gauge, measure the inside diameter
of the
camshaft
bearing .
Bearing inside diameter (from front side ) :
STD
size
No. 1 5 1 .200 - 6 1 .265 mm
(2.0 1 57 - 2 . 0 1 8 3 in.)
No.
5 1 .000 - 5 1 .066 mm
12.0079
-
2 . 0 1 0 4 in.1
No.
50.900 - 60.866 mm
12.0000 - 2.0026 in.1
No. 4 60.600 - 60.665 mm
(1 .99 2 1 - 1 .9947 in.1
U/S 0 . 1 2 5 No. 1
5 1 .074
-
5 1 . 1 3 9 mm
12.0 1 08 - 2.0133 in.1
No. 2 50.874 - 60.939 mm
12.0029 - 2.0056 in. 1
No.
50.674 - 60.739 mm
1 1 .9950 - 1 .9976 in.!
No. 4 60.474
-
60.639 mm
1 1 .9872 - 1 .9897 in.!
U/S 0.25
No. 1 50.950 - 5 1 . 0 1 5
mm
12.0069 - 2.0085 in.1
N o . 2 50.750 - 50. 8 1 5 mm
1 1 .9980 - 2.0006 in.1
No.
50.550 - 60. 6 1 5 mm
11 .9902 - 1 .9927 in.1
No. 4 60.350 - 60.4 1 6 mm
1 1 .9823 - 1 .9848 in.!
(bl Subtract the journal diameter measurement
(See
page
E M - 8 3 )
from the bearing inside diameter
measurement.
Standard oil clearance:
0.030 - 0 . 1 1 5 mm
10.001 2 - 0.0046
inl
Maximum oil c learance : 0.1 6 m m (0.0069 in.)
I f the clearance is grea ter than maximum. replace
the
comshaft bearings. If necessary, grind or replace the
camshaft
2.
I F NECESSARY. GRIND AND HONE CAMSHAFT
J O U R N A L S
Grind and h o n e the journals to the undersized finished
di ameter (See page
E M - B 3 )
Install new
camshaft
undersized bearings.