Mercedes-Benz 603 Service Manual page 208

3 Turn crankshaft slowly in normal direction of
rotation until large pointer on dial gauge (07)
stops (TDC position). Turn dial gauge scale until
large pointer points to zero.
4 Turn crankshaft in normal direction of
rotation slowly until the gauge moves back
3.22 mm on engines 602 and 603 or 3.65 mm
on engine 603.97.
Note
After the dial gauge has moved back (crankshaft
position 20" ATDC) the pin in the crankshaft
pulley or in the vibration damper should be
located exactly below the TDC sensor (arrow).
5 Position locating device 603 589
holder for TDC sensor.
The pin on the crankshaft pulley or on the
vibration damper must catch in the groove in the
locating device.
If the pin on the crankshaft pulley or on the
vibration damper does not
of holder for TDC sensor.
03.10
01
Gauge
177 Plston crown
01 21 00
in
catch, correct position
EXIT