Mercedes-Benz 603 Service Manual page 235

9 Remove camshaft (05220).
10 Measure dimension " Y" (cylinder head
mating surface to valve tappet).
The difference between the dimension " X" and
Reference value: 0.25 - 2.0
Example:
No. 1 Cylinder A (exhaust)
2.82
Dimension " Y" mm
Dimension " X" mm 1.95
0.87
Pre-stroke mm
11 If the valve tappet sinks too quickly or if the
dimension differs from the reference value, lift
out valve tappet with the magnetic lifter
102 589 03 40 00.
Note location of valve tappet.
0510
mm.
E (Inlet)
2.98
1.92
1.06
EXIT