Technical data

Cylinder Head Inspection and Repair
Check guide for ware and damage.
Check
for valve contact,
wear, damage, and sink
of seat face.
Valve Guide Replacement
If a valve guide is found defective. replace it.
1. Remove the valve guide by pressing at its upper
end and
pull it out to the valve seat side.
2. Install the valve guide by press fitting the guide
from the upper side
ofthe cylinder head to a height
of 14
± 0.5 mm from the valve spring seat face.
Westerbeke Engines
28
Check cylinder head surface for warpage between
bolt holes: within O.05mm
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Press·fitting Valve Guide
Check for cracks, damage,
water leak and remove oil, sludge,
sealant
deposit, carbon deposit.
(\625)
(\612)
(\66.6
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