TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 125 of 1015
TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
PROCEDURE
NOT FULLY
MISSION
CAPABLE IF:
36
Semi-
Rear
i.
Inspect air manifold tee for condition and security of
annual
wheels
mounting and air lines and fittings for loose connections.
and hubs,
Replace air manifold tee and/or component parts if
and
condition could impair operation of brakes (para. 3-189).
suspension
Tighten loose air lines and fittings.
(Contd)
j.
Inspect M939A2 series vehicles CTIS air lines and
fittings for loose connections, cracks, splits, or damage that
could cause air leaks. Tighten loose air lines and fittings.
k.
Lubricate spring trunnion bearings every 3,000 mi.
(4,800 km) or 3 months, whichever occurs first.
EXPECTED TEMPERATURES
LUBRICANTS
ABOVE 15°F
+40°F TO -15°F
+40°F TO -65°F
(ABOVE -9°C)
(+4°C TO -26°C)
(+4°C TO -54°C)
GAA
All temperatures
Grease, automotive and
artillery (MIL-G-10924)
l. Visually inspect spring leaves, retaining clips, and
center screws for cracks, breaks, and security of mounting.
Replace spring leaves, retaining clips, or center screws if
cracked or broken (para. 3-167). Secure mounting if loose.
m. Inspect torque rods.
l.
Visually inspect rubber for cracks, splits, or out-of-
round condition. Replace torque rods if rubber is cracked
or out-of-round (para. 3-170).
[RPL]
2.
Check torque rod nuts for tightness. For inspection
purposes, torque rod nuts should be 350-700 lb-ft
(475-949 N•m). If loose, tighten torque rod nuts
350-400 lb-ft (475-542 N•m). Continue to tighten until
cotter pins can be installed.
n.
Inspect both front and rear wearpads for wear. Replace
if wearpads are rubbing the spring bracket (para. 3-168).
o.
Tighten nuts on spring U-bolts 300-400 lb-ft
(407-542 N•m).
CAUTION
Clean breathers and axle around breathers before
servicing to prevent damage to axle from
contamination.
2-37
Back to Top
