Mercedes-Benz 603 Service Manual page 245

Camshaft timing gear bolt
From 11,' 88 the camshaft timing gear fixing has
been revised from a Ml 0 hexagon bolt to a Ml 1
bihexagon necked down bolt on all engines.
Tightening torques
Hexagon bolt (A) 65 Nm
Pre-torque 25 Nm
Torsion angle 90"
Caution!
Note revised plain washer!
Use the plain washer (A) for the hexagon bolt,
and plain washer (B) for the bihexagon necked
down bolt.
Use carrier (A) for previous hexagon bolt, carrier
(B) for bihexagon necked down bolt.
05.10 - 2205
EXIT
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