Engine - Engine and crankcase
Connecting rod bearings
Type
Pre-finished steel backed aluminum tin (or) copper lead
Inside diameter
57.190 - 57.210 mm
(
2.252 - 2.252 in
)
Bearing running clearance
0.060 - 0.100 mm
(
0.002 - 0.004 in
)
Recommended sizes in service
0.250 mm
(
0.010 in
),
0.510 mm
(
0.020 in
),
0.760 mm
(
0.030 in
)
Crankshaft
A - Main journal diameter (standard)
69.810 - 69.830 mm
(
2.748 - 2.749 in
)
B - Crank pin diameter (standard)
57.110 - 57.130 mm
(
2.248 - 2.249 in
)
C - Main journal length number 2 and 3
30.850 - 31.060 mm
(
1.215 - 1.223 in
)
D - Crank pin length
69.810 - 69.830 mm
(
2.748 - 2.749 in
)
E - Main journal length-rear
46.800 - 46.880 mm
(
1.843 - 1.846 in
)
R1 - Main journal fillet radii number 1, 2 and 3
3.170 - 3.556 mm
(
0.125 - 0.140 in
)
R2 - Crank pin fillet radii
3.960 - 4.370 mm
(
0.156 - 0.172 in
)
R3 - Main Journal fillet radius number 4 (last)
3.970 - 4.220 mm
(
0.156 - 0.166 in
)
Surface finish (all pins and journals)
0.4 microns (maximum)
Crankshaft end float
0.050 - 0.380 mm
(
0.002 - 0.015 in
)
Crankshaft rear end seal
Cassette type
Regrind under sizes main and pins
0.250 mm
(
0.010 in
),
0.510 mm
(
0.020 in
),
0.760 mm
(
0.030 in
)
NOTE:
When regrinding the crank pin length should not exceed
40.000 mm
(
1.575 in
) and the rear main journal
(crankshaft with lip type rear oil seal) length should not exceed
47.269 mm
(
1.861 in
) and numbers 2 and 3 main
journals width should not exceed
31.179 mm
(
1.228 in
) maximum. The maximum permissible undersize is
0.760 mm
(
0.030 in
).
Crankshaft thrust washers
Type
Steel backed aluminum tin (or) copper lead
Position in engine
Cylinder block rear main bearing housing
Thickness-standard size
3.070 - 3.120 mm
(
0.121 - 0.123 in
)
Thickness-oversize
3.260 - 3.310 mm
(
0.128 - 0.130 in
)
NOTE:
While locating the thrust washers ensure that the plain surface/steel back is towards the block and the rear
main bearing cap.
Main bearings
Type
Pre-finished steel backed aluminum tin / cooper lead
Inside diameter (fitted)
69.898 - 69.940 mm
(
2.752 - 2.754 in
)
Running clearance
0.070 - 0.130 mm
(
0.003 - 0.005 in
)
Recommended size in service
0.250 mm
(
0.010 in
),
0.510 mm
(
0.020 in
),
0.760 mm
(
0.030 in
)
47899736 29/09/2015
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