Mercedes-Benz 603 Service Manual page 211

Crankshaft sprocket (156)
Crankshaft sprocket (156)
(188)
Camshaft sprocket
Crankshaft
Oil pump sprocket (257) .
Engine
Bolt for camshaft sprocket
Starting 1 l/88 the bolt for mounting the camshaft
sprocket was changed from an M 10 bolt to an
M 11 stretch bolt on engines 602.91/96;
603.91196 and 603.970
(see 05-220).
0 3 . 1 0 - 35012
pull off with puller 601 589 07 33 00 and check
retaining wedge (155a), replace, if required
(items 9 - 10).
. . . . . . . . . . . * . . . replace, transfer color code and knock onto
crankshaft with installation punch
116 589 07 15 00 while paying attention to
retaining wedge (155a) (items 11 - 12).
. . . . . . . * . . . . . . . position on mark, install timing chain and
tighten. Remove hex. head bolts (190) and
washers (189). Hex. head bolt 65 Nm, 12-point
bolt 25 Nm/90" rotation angle (item 13).
. . . . . . . . . . . . . . .
continue to turn and check adjustment markings
at TDC position (item 15).
. . . . . . . . . . . . . . . install with chain for oil pump drive (263) and
tighten hex. head bolt (259) 25 Nm (item 16).
Note
Install chain sprocket so that arch points toward
oil pump.
allow to run and check for leakage (item 18).
EXIT