Machining

Machining the cylinder head

Preliminary work for machining cylinder head
1. Remove cylinder head.
2. Disassemble cylinder head.

Machining the cylinder head





1. Measure cylinder head height on a level surface ( surface plate recommended).
Standard dimension -X-: 142.0 � 0.1 mm
2. Check combustion chamber sealing face of the cylinder head for distortion (flatness) using a straight-edge and feeler gauge.








Permissible unevenness of parting surface for used cylinder head: 0.05 mm
3. Cylinder heads with distorted or scored sealing surface can be repaired by plain-milling them. The following machining criteria must be observed.
Permissible unevenness after machining: 0.03 mm
Permissible roughness profile (can be measured with contact stylus procedure): 15 pt 14
Permissible surface depth from standard dimension: 0.15 - 0.05 mm

Subsequent work

1. Assemble cylinder head.
2. Install cylinder head.