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 Wear limits
Fig.
Ref.
Field
Sizes and fits
Depot
No.
letter
Point of measurement
maint
maint
of new parts
(3) Valves and valve guides.
H
Intake valve length from gage line to
6.0820 to 6.0880
6.1080
6.1040
tip of valve.
H
Angle of intake valve seat with stem--
45 deg 30 min.
H
Outside diameter of intake valve stem
0.4361 to 0.4369
0.4356
0.4356
Inside diameter of intake valve guide
S
0.4384 to 0.4394
0.4406
0.4399
installed in cylinder head.
H-S
Fit of intake valve stem in guide -----
0.0015L to 0.0033L
0.0045L 0.0038L
J
Exhaust valve length from gage line to
6.0700 to 6.0760
6.0860
600860
tip of valve.
J
Angle of exhaust valve seat with stem
45 deg 30 min.
J
Outside diameter of exhaust valve
0.4344 to 0.4352
0.4339
0.4339
stem.
R
Inside diameter of exhaust valve guide
0.4384 to 0.4394
0.4406
0.4399
installed in cylinder head.
J-R
Fit of exhaust valve stem in guide ---
0. 0032L to 0.0050L
0.0062L 0.0055L
*
*
P
Inside diameter of valve guide bore in
0.6865 to 0.6875
cylinder head.
*
*
Outside diameter of valve guides ----
0.6880 to 0.6890
Q
*
*
P-Q
Fit of valve guides in cylinder head
0.0005T to 0.0025T
bores.
(4) Rocker arm push rods.
L
Runout of outside diameter of rocker
arm push rods must not exceed
0.0200-inch indicator reading when
checked between centers.
A
Inside diameter of ring gear --------
16.2260 to 162340
16.2380 16.2360
B
Outside diameter of flywheel --------
16.2480 to 16.2520
16.2440 16.2360
A-B
Fit of ring gear on flywheel ---------
0.0140T to 0.0260T
0.0100T 0.0120T
FOR FLYWHEEL AND RING GEAR
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