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TM 10-4320-324-14
Table 6-1. Wear Limits, Fits, and Tolerances - CONT.
Component
Minimum
Maximum
Exhaust Valves - continued:
Seat bore diameter in head-nominal
1.5748 in.
1.5757 in.
(40.0 mm)
(40.025 mm)
Seat outside diameter
1.5803 in.
1.5811 in.
(40.14 mm)
(40.16 mm)
Valve seat width
0.0591 in.
0.0787 in.
(1.50 mm)
(2.0 mm)
Seat angle
45
Valve rim thickness
0.0197 in.
0.0591 in.
(0.50 mm)
(1.50 mm)
Valve recessed below cylinder head deck
0.1999 in.
0.2205 in.
(5.080 mm)
(5.600 mm)
Valve guides:
Outside diameter - nominal
0.5923 in.
0.597 in.
(15.045 mm)
(15.056 mm)
Bore in cylinder head diameter
0.5905 in.
0.5909 in.
(15.00 mm)
(15.011 mm)
Pressed in inside diameter
0.3149 in.
0.3155 in.
(8.00 mm)
(8.015 mm)
Valve springs:
Total coils
7
Normal length
2.323 in.
2.23976 in.
(59.0 mm)
(60.9 mm)
Minimum length
2.2047 in.
(56.0 mm)
Cylinder head:
Distance between cylinder head bottom and
0.2323 in.
0.2519 in.
cylinder head joint w/o shim bolts.
(5.9 mm)
(6.4 mm)
Stud nominal length
8.287 in.
8.326 in.
(210.50 mm)
(211.5 mm)
6-3
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