TM-9-2320-272-24-4
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4
JUNE 1998
TM-9-2320-272-24-4 - Page 25 of 836
TM 9-2320-272-24-4
5-4. INTAKE AND EXHAUST VALVES REFACING
(Contd)
Table 5-1. Valve Specifications.
Ref.
Intake and
New
New
Exhaust Valves
Minimum
Maximum
1
Stem
0.4500 in.
0.4510 in.
(11.4300 mm)
(11.4554 mm)
2
Seat angle
30°
30°
3
Refacing depth
0.0625 in.
(1.59 mm)
4
Valve head thickness
0.105 in.
(2.67 mm)
Worn
limits
0.4990 in.
(11.4046 mm)
0.0625 in
(1.59 mm)
0.105 in.
(2.67 mm)
5-19
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