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1.5L REVOTORQ BS VI ENGINE
71
Stage
Cylinder block crank bore
diameter (Ø) ‘A’
Crankshaft main bearing
journal diameter (Ø) ‘A’
Main bearing upper & lower
thickness ‘A’ wall
Standard
Selective
Assembly
53.800 - 53.809 (White – A)
53.810 – 53.818 (Red – C)
49.991-50.000 (Orange – F)
49.982-49.990 (Green – D)
1.894/1.898 (Blue – J)
1.890/1.894 (No Color – K)
1.886/1.890 (Green – L)
* Refer graded main bearing selection table in ‘Assembly Clearance’ section.
Stage
Width of 4
th
main bearing journal
(mm)
4
th
main bearing thrust washer
thickness (mm)
Standard
24.000 / 24.052
2.50 - 2.55
Standard 1
-
-
Repair 1
-
-
Maintenance Limit
End play of crank shaft
0.06 – 0.245 mm
Fillet radius of main bearing journals
2.5 – 0.5 mm
Fillet radius of crank pin journals
2.5 – 0.5 mm
Width of 1
st
, 2
nd
, 3
rd
and 5
th
main bearing journals
24.00 +0.20mm
Width of crank pin journals
24.000 + 0.2 mm
Maximum permissible cylindricity main bearing journal
0.005
Circularity of main bearing journal
0.0025
Maximum permissible circularity of crank pin
0.005
Maximum cylindricity of crank pin
0.008
Maximum permissible run out of 2nd, 3rd and 4th main bearing journals when
supported at 1st and 5th main bearing journals
0.1
Maximum permissible out of parallelism between crank pin and main bearing journal
axis
0.01
Crush height of main bearing shells
0.045 – 0.080 mm
Hardness of crank shaft main bearing and crank pin journals
56 ± 3 HRC
Main bearing parent bore diameter in crank case
A grade = 53.800 - 53.809
C grade = 53.810 -53.818
Maximum permissible taper of main bearing parent bore
0.005
Maximum permissible sphericity of main bearing parent bore
0.03
Crank shaft journal to main bearing clearance
0.020 - 0.048