Disassembly; Cleaning - Mercury MerCruiser D2.8L D-Tronic Service Manual

ENGINE MECHANICAL

Disassembly

1. Using valve spring compressor, carefully remove keepers, retainers, springs and spring
plates. Place valves in numbered rack according to their position in the engine or label
the parts in order for reassembly to the original location.

Cleaning

1. Clean carbon from valves.
2. Being careful not to damage aluminum heads, clean all carbon from combustion
chambers and valve ports.
3. Clean gasket material from cylinder head mating surfaces.
4. Thoroughly clean valve guides with valve guide cleaner.
5. Wash cylinder head and components in cleaning solvent.
6. Put on safety glasses.
7. Dry with compressed air.
8. Clean cylinder head bolt hoes in cylinder block.
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a - Typical Valve Spring Compressor
b - Valve Spring and Related Components
b
SERVICE MANUAL NUMBER 22
a
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90-860074--1 FEBRUARY 2002