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 TM 55-1905-223-24-3
2-43. Replace/Repair Cylinder Head Group.
This task covers:
a. Removal
b. Repair
c. Replacement
d. Installation
e. Inspection
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's rail
Engine shut down and cooled below
120 (50 ). TM 55-1905-223-10.
and marine diesel engines,
F
C
Cooling system drained (Table 2-1,
Injector puller P/N 3376000
Item 24).
Torque wrench kit P/N 3377216
Aftercooler removed (paragraph 2-41).
Lifting fixture P/N 3822512
Exhaust manifold removed (paragraph
Lifting sling P/N 3375958
2-42).
Injector adjustment kit P/N 3375842
Turbocharger removed (paragraph 2-30).
T-handles
Rocker lever housing removed
Materials/Parts
Injector group removed (paragraph
Guide studs, Item 46, Appendix C
Air supply secured (port).
Diesel engine cylinder head P/N 3041993
Battery banks disconnected (starboard).
Wood blocks (for laying the cylinder
TM 55-1905-223-10.
heads on when they are removed)
Fuel crossovers removed (paragraph
Cylinder head gaskets P/N 3047402
2-38).
Coolant, Item 8, Appendix C
Lubricating oil, Item 2, Appendix C
Crosshead assembly valve P/N 3030038
Setscrew P/N 4147389
Plain hexagon nut P/N 4203131
REMOVAL
a.
Remove the push rods as follows:
(1)
Some push rods (1, Figure 2-52) are under compression due to the valves being open. Rotate the
crankshaft with the accessory drive pulley (2) to relieve the spring tension.
(2)
To prevent increased wear, mark each push rod (1) asit is removed to identify its location in the
engine.
(3)
Lift the push rods (1) from the cylinder head (3). Store push rods where they will not be damaged.
2-145
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