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 TM 10-3930-660-24-2
CYLINDER HEAD ASSEMBLY REPAIR - CONTINUED
0270 00
REPAIR - CONTINUED
16.
Reinstall valves in their designated bores. Measure and record depth H.
17.
Calculate grinding depth (GD) from (G) and (H) measurements as follows: G = H-G
H
Maximum Limit
GD=0.010 in. (0.25 mm)
409-872
18.
If (GD) is equal to or less than given tolerance, identify valve seat with an X.
19.
If (GD) is greater than 0.010 in. (0.254 mm), a service
valve seat must be installed.
409-873
20.
With valves in their designated bores, measure and record depth (I).
I
Depth Limit
I Depth:
0.039 to 0.060 in.
(0.9906 to 1.524 mm)
409-874
21.
If depth (I) exceeds tolerance limits, replace the valve and check depth (I) again.
0270 00-9
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