Maximum Permissible Wear For Cylinder Bores; Machining Tolerances - Mercedes-Benz 603 Service Manual

Bore diameter
Boring operation . . . . . . . * . . . . . . . . . . . . . . .
Cylinder bore . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .

Maximum permissible wear for cylinder bores

Measuring range " a" (upper reversal point of 1st piston ring) in longitudinal
and/or transverse direction
Standard and repair stage diameter "D" for cyl nder bores
Version
1 - 4, 5, 6
Standard
Repair stage ' )
f r engines with cylinder sleeves. Cylinder sleeves must be replaced when the wear llmlt

Machining tolerances

Permissible out-of-round and conicity of cylinder bore
Permissible roughness of cylinder bore (R3Z)
Permissible waviness of cylinder bore
l-ioning angle
Roughness of block parting surface
Chamfer of cylinder bores
determine and adjust boring tool.
Note
The bore diameter " Dl" is the cylinder bore
diameter " D" 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 ' ID" according to engine
model and group code letter A, X, 6" (stamped
in block).
perform according to operating instructions for
boring tool used.
bevel at upper and lower edges of cylinder (see
drawing for dimensions).
perform according to specified data.
602, 603
Cylinder dia. D in mm
87.000 - 87.006
over 87.006 - 87.012
over 87.012 - 87.018
87.700 - 87.706
87.706 - 87.712
87.712 - 87.718
0.07 mm
0.003 - 0.006 mm
50
45"
0.006 - 0.016 mm
refer to figure
EXIT
0.2 mm
603.970
Cylinder dia. D in mm
89.000 - 89.006
over 89.006 - 89.012
over 89.012 - 89.018
89.700 - 89.706
89.706 - 89.712
89.712 - 89.718
reached.
IS
of roughness