TM-9-2320-279-10-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
OPERATOR’S MANUAL VOLUME 1 OF 2
DECEMBER 1998
CHANGE 5
TM-9-2320-279-10-1 - Page 666 of 773
TM 9-2320-279-10-1
Operators Maintenance (Cont)
3-9.
SERVICE TIRES (CONT).
Table 3-4.
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 3-4, 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.
Highway
Standard Tire
Sand Tire
125 psi (862 kPa)
125 psi (862 kPa)
Cross
Country-Dry
Standard Tire
125 psi (862 kPa)
Sand Tire
NA
Standard Tire
Sand Tire
125 psi (862 kPa)
NA
Rear
Tires
are:
(M984E1)
Overinflated.
Tire pressure
measured is
25% or more
above the stan-
dard tire pres-
sure.
Do not adjust
pressure if above
pressure shown
below.
Standard Tire
38 psi (262 kPa)
Sand Tire
31 psi (215 kPa)
Absolute minimum pressure.
3-62.6
Change 5
Rear
Tires
(M984E1)
Underinflated.
Tire pressure
measured is
80% or less
than the stan-
dard tire pres-
sure.
Do not adjust
pressure if
below pressure
shown below.
80 psi (552 kPa)
80 psi (552 kPa)
80 psi (552 kPa)
NA
80 psi (552 kPa)
NA
24 psi (165 kPa)
*25 psi (172 kPa)
Rear
Tires
are:
(M984E1 when
towing another
vehicle)
Overinflated.
Tire pressure
measured is
25% or more
above the stan-
dard tire pres-
sure.
Do not adjust
pressure if
above pressure
shown below.
125 psi (862 kPa)
125 psi (862 kPa)
125 psi (862 kPa)
NA
125 psi (862 kPa)
NA
99 psi (684 kPa)
99 psi (684 kPa)
Rear
Tires
are:
(M984E1 when
towing another
vehicle)
Underinflated.
Tire pressure
measured is
80% or less
than the stan-
dard tire pres-
sure.
Do not adjust
pressure if
below pressure
shown below.
80 psi (552 kPa)
80 psi (552 kPa)
80 psi (552 kPa)
NA
80 psi (552 kPa)
NA
64 psi (441 kPa)
64 psi (441 kpa)
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