Mercedes-Benz 603 Service Manual page 205

Gauge (01)
Engine
Engine
Holder for TDC sensor (42) or (44) . . . . . . . . . . .
Holder for TDC sensor (42) or (44) . . . . . . . . . . .
03.10 - 34512
dial gauge (07) on gauge to 5 mm pretension
(item 2).
Note
If cylinder head is removed, position gauge pin
of dial gauge directly on piston crown (177).
Use dial gauge holder 363 589 02 21 00.
turn in running direction until dial gauge pointer
stops moving (TDC position), set dial gauge
scale to zero (item 3).
turn until dial gauge moves back 3.22 mm
on engines 602 and 603 or until dial gauge
moves back 3.65 mm on engines 601.921,
603.97 (item 4).
Note
Corresponds to crankshaft position of 20"
ATDC.
install locating device 603 589 01 21 00
(item 5).
Note
The pin on the crankshaft pulley or on the
vibration damper must catch in the groove on
the locating device, if not, correct position of
holder.
correct by loosening bolt (41), move holder for
TDC sensor until pin on crankshaft pulley or
vibration damper catches in locating device
603 589 01 21 00 and tighten bolt (41)
(items 6 - 8).
EXIT