8-4. TIRE, WHEEL, AND RUNFIAT MAINTENANCE (Contd)
Lubricate O-ring seal (8) with tire soap and install O-ring seal (8) on first ledge of rim half (9). Make
sure Wing seal (8) is not twisted and is uniformly positioned 1 in. (25.4 mm) below
studs (10). Do not overstretch O-ring seal (8).
Position inner rim half (9) on a raised stand (or another inner rim half) to ensure tire (6) sidewall
will not contact floor when installed.
Lubricate tire bead (7) and rim bead seat areas with tire soap.
Before installing tire on inner rim half, inspect tire sidewalls for
a paint dot. Paint dots are often painted on tires to indicate the
tires light spot, for balancing purposes. If paint dot is present,
position tire on rim halves so that paint dot is 180° from valve
stem on outer rim half.
Center runflat (5) in tire (6). Carefully lower tire (6) over rim half (9). Check to ensure O-ring
seal (8) has not been disturbed.
Ensure runflat (5) is not binding flat portion of rim half (9). Runflat (5) should clear inner rim
Install rim half (2) in tire (6).
Tighten locknuts gradually to avoid bent and broken studs, or
damage to wheel components.
Install rim half (2) to rim half (9) with eight locknuts (1). Tighten locknuts (1) in sequence shown
until rim half (2) is nearly touching rim half (9).
Tighten locknuts (1) to 55 lb-ft (75 N m) in sequence shown.
Tighten locknuts (1) to 65 lb-ft (88 N m) in sequence shown.
Check wheel assembly for gaps at each stud (10) between rim half (2) and rim half (9). Use a
0.0015 in. (0.038 mm) thickness gauge to detect gaps. If gaps are detected, disassembly and
reassemble wheel assembly and recheck for gaps. If gaps are still detected, replace rim half (2).
Install valve core (4) in valve stem (3).
W A R N I NG
Never inflate a wheel assembly without having checked wheel
locknut torques to ensure the wheel locknuts are tightened to
specifications. An assembly with improperly tightened locknuts
could separate under pressure resulting in serious injury or
Always use a tire inflation cage for inflation purposes. Stand on
one side of cage, during inflation, never directly in front. Keep
hands out of the cage during inflation. Inflate assembly to
recommended pressure, using a clip-on air chuck. Do not exceed
30 psi (207 kPa) cold inflation pressure. Failure to follow these
instructions may result in serious injury or death.
Place assembly in safety cage and inflate tire (6) to 30 psi (207 kPa) to seat tire bead.
Deflate tire (6) to recommended tire pressure (TM 9-2320-280-10).
Check for leaks around rim edges (11) and valve stem (4) with soapy solution.