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 TM 10-3930-660-24-2
CYLINDER HEAD ASSEMBLY REPAIR - CONTINUED
0270 00
REPAIR - CONTINUED
22.
Apply a light coat of valve lapping compound to each
valve and lap each valve to its companion seat.
409-875
23.
Remove valves and clean grinding compound from
valves and seats.
24.
Measure valve seat width.
409-876
K
J
Valve Seat Width Range Limits
Point J
0.060 in. (1.524 mm)
Point K
0.080 in. (2.032 mm)
409-877
25.
If valve seat is too wide after lapping, grind lower seat
K
surface (L) using a 60 degree seat grinder, and upper
G
seat surface (M) with a 15 degree seat grinder until
J
M
L
seat width is centered and within specifications listed
in step 31 above.
NOTE
If it was necessary to install service valve
60 degrees
guides, install the service guides before
installation the service seats.
409-4107
0270 00-10
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