TM 5-4310-393-14
Max.
Item
Size
Size
Perm.
Remarks
(In)
(mm)
Wear (in)
Exhaust valve head diameter
Valve clearance.
Valve guide bore diameter.
Outside diameter
Bore for valve guide in cylinder
head
Inserting pressure
Valve guide protrusion.
Rocker bore diameter.
Rocker shaft diameter
Rocker radius.
Rocker axial play.
Valve seat ring seat angle.
Crankshaft
Roughness RA. (m)
Crank pin width.
Hardness at crank pin. (RC)
Hardness depth at crank pin.
Diameter of crankpin
(new engine)
1.197/
± 0.004
0350/
.0177
0.2756/
0.2760
0.3948/
0.3946
0.3941/
0.3937
220 lb.
0.165/
0.157
0.7099/
0.7096
0.7084/
0.7080
0.315
0.008/
0.026
45 deg.
0.3
1.2992/
1.3017
50/55
0.043/
0.060
1.6512/
1.6508
30.4/
± 0.1
0.9/0.45
7.009/
7.000
10.029/
10.023
10.011/
10.000
100 kg
4.2/4.0
18.033/
18.024
17.994/
17.983
8
0.20/
0.65
33.062/
33.000
1.1/1.5
42.00/
41.93
0.002
0.002
0.002
Attention:
Valve clearance must not be
less than 0.018 in (0 45 mm)
otherwise there is danger of
valve
head
touching
the
piston. The cylinder head can
be machined up to a max. of
.0196 in (0 5 mm) provided the
minimum valve clearance is
maintained.
With cylinder head cold.
Valve guides without collar
only.
After pressing in.
No flattening permitted.
Bearing clearance new .0018-
.0030 in (0.046-0.076 mm)
Max. permissible bearing
clearance 0.009 in (0.23 mm).
Out-of-round over total length
max. 0.0002 in (0.005 mm)
Max. permissible out-of-round
of crankpin 0.0020 in (0.05
mm). Amount of taper over
total length max. 0.00012 in
(0.003 mm).
5-3
