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TM 5-4320-305-24
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 (220°C) 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 tempera-
ture, 75° F(23.9°C).
4-55
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