service manual 55a four marine diesel engine - Westerbeke
service manual 55a four marine diesel engine - Westerbeke
service manual 55a four marine diesel engine - Westerbeke
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ENGINE DISASSEMBLY<br />
Valve Seals<br />
0000000<br />
ADJUSTING DISCS AND TAPPETS<br />
1. Move the piston of the valve seal to be replaced to<br />
approximately top dead center.<br />
2. After removing the lower spring seats, remove the valve<br />
seals by using the valve seal remover (49 S120 170) to<br />
grasp and work them out.<br />
NOTE: The valve seal remover (49 S120 170) cannot<br />
grasp the valve seals unless the lower spring seats have<br />
been removed.<br />
Valves<br />
1. Remove the springs.<br />
2. Remove the valves, lower spring seats and spring retainers<br />
from the cylinder head by using an appropriate valve<br />
spring compression tool.<br />
VALVE SEAL<br />
REMOVER<br />
49 S120 170<br />
VALVE SPRING LIFTER·<br />
490636100A<br />
Combustion Chamber Inserts<br />
1. Remove the combustion chamber inserts from the bottom<br />
surface of the cylinder head by using a suitable mandrel.<br />
PIVOT<br />
·49 S120 222<br />
NOTE: The valve guides are to be removed only after measuring<br />
the valve guide/valve stem (see Valve Guides under<br />
ENGINE INSPECTION.<br />
Engines & Generators<br />
15
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