TM 10-3950-672-24-2
Part or Assembly
Ref. Point
mm
in
Valve Grinding
Grinding angle
Intake: 30 degrees
Rim thickness
T
0.79
MIN
0.031]
Valve Seat Grinding
The illustrated marks indicate valve seats have been ground previously. Additional grinding will
result in grinding past the induction hardened area.
Replace previously re-ground seats will with service seats. Refer to the Alternative Repair Manual,
Bulletin No. 3810234.
Seat grinding depth
B
0.254
MAX
[0.010]
Seat grinding angle
Intake: 30 Degrees
Valve depth
C
0.99
MIN
[0.039]
1.52
MAX
[0.060]
Valve seat width limit
Grind area (A) with a 60 degree stone and
1
1.5
MIN
[0.060]
(B) with a 15 degree stone to center the
2
2.0
MAX
[0.080]
seat on the valve face and obtain the valve
seat width limits.
5-360