TM 9-2320-279-10-1
3-40.4
Change 6
Operators Maintenance (Cont)
3-6. CHANGE WHEEL AND TIRE ASSEMBLY (CONT).
Table 3-2.1. Unsafe Inflation Pressures (Cont)
WARNING
If tire has been run flat, or is over- or underinflated
when tire pressure is measured and operating terrain is
compared to Table 3-2.1, or if wheel/tire assembly has
obvious or suspected damage, it is not safe to adjust tire
pressure. Completely deflate tire according to para 3-9,
and remove the tire from the axle. Failure to follow
these procedures may result in serious personal injury
or death.
Recommended HEMTT Tire Pressures
UNSAFE Limits of High and Low Cold Tire Pressures
OVER-Inflation Limits:
120psi is the top limit of cold tire pressure. Anything over 120psi makes
tire unsafe.
Recommended Operating Tire Pressures:
UNDER-Inflation Limits:
Rear Tires
M983, M977, M978
Operating
Standard Tires (XZL, XL, AT2A)
Condition
Recommended
Operating
Pressure
psi (kPa)
Unsafe
Under-inflation
Pressure
psi (kPa)
1. Highway
70 (483)
56 (386)
2. Cross Country - Dry
40 (276)
32 (221)
3. Cross Country - Wet
30 (207)
24 (165)
4. Sand
35 (241)
28 (193)
Note: You can safely operate off-highway at highway recommended operating
pressures. The reduced operating pressures for off-highway will improve
mobility.
Note: All tire pressures are based on measurement of cold tire.
