TM-9-2320-272-24-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4
JUNE 1998
TM-9-2320-272-24-2 - Page 26 of 991
TM 9-2320-272-24-2
3-221. TIRE AND WHEEL (M939A1 /A2) MAINTENANCE (Contd)
1.
2.
3.
4.
5.
Lubricate O-ring (6) and install on O-ring groove (4) of wheel rim (2).
6.
Install clamp ring (7) on wheel rim (2), with valve hole aligned with valve (3).
7.
Install wheel assembly tool base on wheel rim (2).
8.
Install wheel assembly tool plate on wheel assembly tool base with two washers (15) and nuts (16).
9.
Install ten new locknuts (14) on wheel rim studs (13). Finger-tighten locknuts (14).
10.
Remove two nuts (16), washers (15), tool plate, and tool base from wheel rim (2).
11.
Tighten locknuts (14) 210-240 lb-ft (285-325 N•m) in sequence shown.
12.
13.
14.
WARNING
Mount only replacement tires specified in TM 9-2320-272-24P
Do not exceed recommended tire inflation pressure. Do not
exceed load stamped on wheel. Wrong size tires, overinflated
tires, or overloaded assemblies could case assemblies to
separate under pressure, resulting in injury or death.
Always inflate the assembly in a tire inflation cage, using a
clip-on air chuck. Inflation cage can help reduce risk of injury
if the assembly should separate during inflation.
NOTE
Assistant will help when required.
When new wheel rim is installed, use attaching parts from old
wheel rim.
Ensure O-ring groove, wheel rim, and clamp ring are free of
rust, dirt, and other foreign material that may prevent tire from
sealing when assembled and inflated.
Using rope, install beadlock (5) in tire (1). Ensure beadlock (5) is centered in tire (1). Remove rope.
Install grommet (11) on turret valve (3).
Install turret valve (3) on wheel rim (2) with nut (12). Tighten nut (12) 40-65 lb-in, (5-7 N-m).
Install tire (1) on wheel rim (2).
NOTE
Do not stretch or twist O-ring.
WARNING
Place tire in tire inflation cage before inflating. Failure to do so
may result in injury to personnel.
Install valve core (9) on valve stem (8).
Inflate tire (1) to proper pressure (TM 9-2320-272-10).
Install valve cap (10) on valve stem (8).
3-634
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