Mercedes-Benz 603 Service Manual page 240

Fasten dial gauge holder 363 589 02 21 00
2
on the cylinder head (above the No. 1 cylinder
inlet valve).
3 Insert dial gauge and extension and fasten
so that probe pin sits on the valve tappet with a
preload of 3 mm (small dial gauge pointer).
4 Turn dial gauge scale until the large pointer
is on " 0" .
Caution!
The probe pin of the dial gauge must be exactly
vertical to the valve tappet.
5 Turn crankshaft further in direction of
rotation of engine, unttl the small pointer of the
dial gauge has moved back by 2 mm to
In this position the marking at the crankshaft
pulley or vibration damper must be at 11 - 12"
after TDC. If this value is more than 12" the
camshaft is to be replaced or the timing chain
checked for elongation.
05.10 215~3
mm.
EXIT