|
| |
TM 5-4320-306-24
4-7. REPLACE/REPAIR VALVES, VALVE GUIDES, AND VALVE SEATS (Continued)
d. Insert and evenly seat in bottom of cylinder head (1) new valve seat insert rings (2) with valve seat ring mandrel
No. 123950 (3) or 123960 (4).
NOTE
If both valve seat inserts and valve guides need to be repaired, valve guides
should be repaired at the same time as the valve seat inserts as long as the
cylinder head is heated to 428°F (220°C).
e. If valve guides are to be repaired, repair them now according to REPAIR procedure 2 before continuing with valve
seat insert repair.
f. Allow cylinder head to cool to room temperature, 75 F (23.9 C).
4-53
|
