Cylinder Head
Cylinder head height h is measured with the camshaft
in place fitted with two bearing caps.
h is measured on the oil seal lip contact diameter (the
largest diameter).
h nominal: 157.40 to 157.75 mm
Maximum permissible bow on bottom of cylinder head:
0.07 mm (camshaft must turn freely).
Maximum permissible gasket face machining: 1.4 mm in rela-
tion to the measured h nominal.
Cylinder heads machined undersize are stamped R in
the area (a):
After machining gasket face, the following operations
must be done:
1. Valve seat machining to re-establish correct
recess (see Valve Recess in this section).
2. Replacement of swirl chambers by repair dimen-
sion and correction of their protrusion (see Swirl
Chambers in this section).
3. Fitting of 0.4 mm thick compensation washers
under the valve springs (to match cylinder head
machining.
Cylinder heads manufactured with oversize camshaft
bear
ings (+0.5) are stamped 1 in the area (a)
Cylinder Head Gasket
Thickness identification:
Units: mm
Identification (c) Identification (b) Thickness
No notch 2 notches 1.48
3 notches 1.52
4 notches 1.58
5 notches 1.62
Figure 2
Figure 3
Engine Page 3 - 4
Rev. B
Reelmaster 335-D/3500-D
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