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 TM 55-1905-223-24-3
3-23. Replace Camshaft and Gear Group.
This task covers:
a. Removal
b.
Replacement
INITIAL SETUP
Tools
Equipment Condition
Tool kit, mechanic's, general
Engine shut down and cooled to below
120 (50 ).
F
C
Installation pilots P/N 3375268
Air supply secured (port).
Dial indicator, 5210-00-277-8840
Battery banks disconnected (starboard).
Crankshaft pulley and vibration
Materials/Parts
dampener removed (paragraph 3-26).
Accessory drive pulley removed
Lubriplate, Item 28, Appendix C
Rubber bands, Item 29, Appendix C
Gear cover removed (paragraph 3-20).
Camshaft P/N 3049024
Cam follower housing removed
Lubricating oil, Item 2, Appendix C
REMOVAL
a. Install four camshaft pilots over the outer base circle of the valve lobes between the camshaft journals
b. Use a rubber band to hold the installation pilots in place. The rubber band must straddle the valve lobe
c. Use one hand to slowly rotate and pull the camshaft f om the cylinder block and the other hand to
r
balance the camshaft as it is removed.
d.
Remove the camshaft thrust bearing (2, Figure 3-53) from the camshaft (6).
NOTE
Measure the camshaft thrust bearing. If worn thinner than 0.083 inch (2.11 mm) notify
your supervisor.
REPLACEMENT
a.
Apply a film of Lubriplate 105 or its equivalent to both sides of the camshaft thrust bearing (2, Figure
3-100
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