Mercedes-Benz 602, Service Manual

Page: 62 / 324

Bore diameter determine and adjust boring tool.
Note
Boring operation . . . . . . . perform according to operating instructions for
boring tool used.
Cylinder bore . . . . . . . . . . . . . . . . . . . . . . . bevel at upper and lower edges of cylinder (see
drawing for dimensions).
operation . . . . . . . . . . . . . . . . . . . . . . . perform according to specified data.
The bore diameter is the cylinder bore
diameter minus the material which will be
removed by honing. The material removed by
honing should not exceed max. 0.05 mm. Select
repair stage diameter according to engine
model and group code letter A, X, (stamped
in block).
Maximum permissible wear for cylinder bores
Measuring range “a” (upper reversal point of 1st piston ring) in longitudinal
and/or transverse direction
0.2 mm
Standard and repair stage diameter for cyl nder bores
Version Cylinder code
Standard
Repair stage
mm)
1 4, 5, 6
602, 603
603.970
Cylinder dia. D in mm Cylinder dia. D in mm
87.000 87.006
89.000 89.006
over 87.006 87.012 over 89.006 89.012
over 87.012 87.018 over
89.012 89.018
87.700 87.706 89.700 89.706
87.706 87.712
89.706 89.712
87.712 87.718 89.712 89.718
Does not app y 0
f engines cylinder sleeves. Cylinder sleeves must be replaced when the wear
IS
reached.
Machining tolerances
Permissible out-of-round and conicity of cylinder bore
0.07 mm
Permissible roughness of cylinder bore 0.003 0.006 mm
Permissible waviness of cylinder bore
50 of roughness
l-ioning angle 45”
Roughness of block parting surface
0.006 0.016 mm
Chamfer of cylinder bores
refer to figure