Mercedes-Benz 603 Service Manual page 209

Correcting
Loosen holder (42 or 44) with screw (41)
6
and move until pin on crankshaft pulley or on
vibration damper catches in the groove in the
locating device 603 589 01 21 00.
Holder for TDC sensor, engine 601.921
7 Screw holder for TDC sensor down tight.
8 Remove dial gauge and gauge
601 589 07 21 00 and locating device
603 589 01 21 00.
Holder for TDC sensor
start of productlon
03.10
EXIT