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 TM 5-2410-237-23
CYLINDER HEAD INLET AND EXHAUST VALVES REPLACEMENT - CONTINUED
0245 01
CAUTION
Use caution to ensure components of cylinder head do not become contaminated. Keep work area clean.
Contamination of cylinder head components could result in premature engine failure.
NOTE
Use the following procedure for each of six inlet valves and six exhaust valves.
REMOVAL
NOTE
Tag valves as they are removed to ensure correct installation.
1.
Use valve spring compressor to compress valve spring (1) and remove two locks (2). Discard locks.
2.
Remove valve spring compressor, rotocoil assembly (3), valve spring (1) and valve (4) from cylinder head (5). Discard
spring.
3.
Remove valve guide (6) as described in Cleaning and Inspection. As required, use seal inserter and remover to remove
valve guide. Discard valve guide.
4.
Remove valve seat insert (7) as described in Cleaning and Inspection. As required, remove valve seat insert as follows:
a.
Use extractor to remove valve seat insert from cylinder head (5).
b.
Clean valve seat bore in cylinder head.
c.
Remove any rough areas from valve seat bore in cylinder head.
5.
Repeat steps 1-4 to remove all remaining valves (4) from cylinder head (5).
2
3
3
1
1
6
6
ART #421-0012
5
7
7
4
4
INLET VALVE
EXHAUST VALVE
421-0012
Change 1
0245 01-2
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