TM-9-2320-279-20-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3
TM-9-2320-279-20-1 - Page 60 of 985
TM 9-2320-279-20-1
Table 2-1. Unit Level Preventive Maintenance Checks And Services
Item
Interval
Item To Be
Procedure
No.
Not Mission
Inspected
Capable If:
10
Semi-
Tires
Annual
Continued
OPERATING SPEEDS
Cross
Cross
Highway Country-Dry Country-Wet
Sandy
Terrain
Maximum Speed (all models)
Standard Tire
55 mph
40 mph
(88 kmh)
(64 kmh)
Sand Tire
55 mph
(88 kmh)
NA
M984E1 (when towing another vehicle)
Standard Tire
15 mph
15 mph
(24 kmh)*
(24 kmh)
Sand Tire
15 mph
(24 kmh)*
NA
*
20 mph
20 mph
(32 kmh)
(32 kmh)
20 mph
NA
(32 kmh)
15 mph
15 mph
(24 kmh)
(24 kmh)
15 mph
NA
(24 kmh)
Operation at speeds over 15 mph (24 kmh) on paved road can be achieved
when the operator determines that the vehicle being towed and the ter-
rain allow for safe operation. Under no condition can speeds exceed 35
mph (55 kmh) on paved roads and 15 mph (24 kmh) off paved roads.
NOTE
Tires should only be rotated on the same
side within same tandem.
e.
Rotate tires. Switch tires on No. 1 and
No. 2 axles on right side. Switch tires on No. 3
and No. 4 axles on right side. Switch tires on
No. 1 and No. 2 axles on left side. Switch tires
on No. 3 and No. 4 axles on left side.
f.
Make sure all wheel lugnuts are installed
and tightened to correct torque value.
FRONT WHEELS
REAR WHEELS
REAR WHEELS
(ALL EXCEPT M984E1)
(M984E1)
575-625 lb-ft
450-500 lb-ft
575-625 lb-ft
(780-848 N•m)
(610-678 N•m)
(780-848 N•m)
2-10.2
Change 3
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