Detroit Diesel 4000 Series, Service Manual, Page: 624 / 2706

SERIES 4000 12/16V SERVICE MANUAL
C 041.05.08 – INSPECTION AND REPAIR
Perform the following subsections to inspect and repair the cylinder head:
Clean Cylinder Head
Perform the following steps to clean the cylinder head:
1. Clean all components with cold cleaner.
To avoid personal injury when using the chemical
substances listed below, it is essential to observe the
manufacture’s instructions for use, safety instructions and
waste disposal specifications.
3
Emery cloth
3
Magnifying glass
3
Vasoline, petroleum jelly (white)
3
Multipurpose grease, Shell Retinax
3
Engine oil
3
Cleaning agent, Solvclean
3
Corrosion preventive, Caramaba Express
3
Kerosene or diesel fuel
2. If necessary, pretreat oil-carbon deposits on valves and cylinder heads with carbon-deposit
remover.
3. After cleaning with carbon-deposit remover, rinse components in water until there is
no further residue.
4. Measure cylinder head overall height.
[a] If values are below minimum permissible height, replace cylinder head.
[b] If values are not below minimum permissible height, continue inspection.
5. Visually inspect cylinder head interfaces (combustion chamber side) for unevenness or
damage.
[a] If cylinder head interfaces are uneven or damaged, recondition as necessary.
[b] If cylinder head interfaces are not damaged or uneven, continue inspection.
NOTE:
Surface quality (roughness height, shaft height) of cylinder head interfaces must be
maintained.
NOTE:
Do not remove material below minimum permissible height.
All information subject to change without notice.
C -478
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