Volvo B 21 - Crankshaft and Bearing Journal Dimensions

CRANKSHAFT ASSEMBL "f
Crankshatt mm (in)
Max. out-of-true . . ............................. .
Crankshaft, axial clearance, max. . ... ......... .. .
radial clearance (main bearings) .......•.
Big-end bearings, axial clearance ...................•..•..•
radial clearance . . . . . . . . . . . .............. .
Main baaring journals mm (in :)
Out-of round, max ............ .
Taper, max
.. .......... .
Diameter, standard
.............. .
undersize 1
2 ..
Width on crankshaft for flange bearing shelJ,
standard . .. . .. . . ...... .
oversize 1
2 ....
Group 27 Reconditioning engine
0.05 (0.0020)
0.25 (0.0098)
0.028- 0.083 (0.0011 - 0.0033)
0.15- 0.35 (0.0059- 0.0138)
0.024- 0.070 (0.0009- 0.0028)
0.07 (0.0028)
0.05 (0.0020)
63.451 - 63.464 (2.5000-2.50 05)
63.197-63.210 (2.4900- 2.49051
62.943- 62.95612.4800- 2.48051
38.960- 39.000 11.5350- 1.5366)
39 . 061 - 39.101 (1.5390- 1.5406)
39.163- 39.203 (1.5430- 1.54
461
Specifications
Taper Out-ol-round
Connecting rod bearing journ'!lls mm (in)
Out-of-round max ..
Taper,max ....
Diameter, standard .................. .
undersize
1 ..
2 .. .
Bearing recess widlh ... .
Connecting rods mm (in)
Axial clearance al crankshaft ............................ .
length , centre-centre ......... ........ . .. ..... . .. ..... .
Max.
weight deviation between connecting rods in same
engine
.................. . ..................... .
Flywheel mm (in)
Axialthrow, max ........ .
0.05 (0.0201
0.05 (0.020)
53.987-
54 .000 (2.1271 - 2.1276)
53.733- 53.746 (2.1171-2.11761
53.479- 53.
492 (2.1071 - 2.1076)
29.95- 30.05 (1.1800- 1.1840)
0.15- 0.
35 (0.0059-0.0 138)
145±
0.1 (5 .713±0.0039)
10
gms
0.05 mm!lS0 mm diameter
(0.0020 In/S.9l in diameter)
7