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TM 5-4320-306-24
4-7. REPLACE/REPAIR VALVES, VALVE GUIDES, AND VALVE SEATS (Continued)
2
Repair valve guides (1)
WARNING
Use care when handling heated parts.
a. Heat cylinder head (2) to 428° F (220C) in furnace
b. Press out old guides (1) with valve guide mandrel, 8 mm, No 123310 (3) and mallet or hammer (4).
c. Install new valve guides (1) with snap rings (2)
installed Lightly press into heated cylinder heads
(3) with chamfered ends toward top of cylinder
head.
d. Allow cylinder head to cool to room temperature,
75° F (23.9 C)
4-55
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