Mercedes-Benz 603 Service Manual page 187

Note
The upper connecting rod bearing shells for
engines 603.96 are made using a different
material starting 05186 due to the higher load.
Caution!
Do not mix the upper and lower bearing shells.
They can be recognized by the stamped-in part
number.
Upper bearing shells
603 08 10
or 603 15 10
Lower bearing shells
601 04 11
or 601 08 11
The bore for lubrication of the piston pin has
been eliminated.
Due to higher loads in engine 603.970, the
upper connecting rod bearing shells are made of
a different material than the lower shells.
To prevent misassembly, the upper locating
0.7
groove is mm narrower.
15 Measure connecting rod bearing diameters
and note.
16 Measure connecting rod bearing journals.
Determine connecting rod bearing radial
clearance.
The bearing clearance can be corrected by
changing the bearing shells, whereby it should
be attempted to achieve the mean value of the
specified bearing clearance. Observe different
wall thicknesses.
17 Install pistons on connecting rods (03-316).
18 Coat bearing shells, crankshaft, pistons and
cylinder walls with engine oil, install connecting
rods with pistons (03-316).
03.10 - 320/16
A 3.2 mm all engines
2.5 m m engines 603.96, 603.97
3.2 m m engine 602
EXIT