TM 55-2320-242-15-1
Section II. CHARACTERISTICS AND RELATED DATA
critical factors for transportability purposes, each vehicle
2-3. General Transportability Characteristics
should be weighed and/or measured.
Data contained herein are applicable to vehicles having
the model number and Federal Stock Number (FSN)
Truck, cargo, 1 1/4-ton, 6x6, M561.
shown. Vehicles having a different model number or
Federal Stock Number: 2320-873-5407
FSN may have characteristics that will affect the
Line item number: X39940
loadability to an extent that the guidance shown in this
Type classification: Standard A
manual will not apply. If weights or measurements are
Without Winch
With Winch
Measurements:
Length, Operational .....................
227.8 in. (5.79 m)
232.6 in. (5.91 m)
Length, Reduced* ........................
226.3 in. (5.75 m)
231.1 in. (5.87 m)
Width** .......................................
85.3 in. (2.17 m)
85.3 in. (2.17 m)
Height, Operational......................
94.0 in. (2.39 m)
94.0 in. (2.39 m)
Height, Reduced*** ......................
67.5 in. (1.71 m)
67.5 in. (1.71 m)
Volume .......................................
1,057 cu ft (29.91 cu m)
1,084 cu ft (30.68 cu m)
Volume, Reduced*** ....................
754 cu ft (21.34 cu m)
770 cut ft (21.79 cu m)
Curb Weight:
Front Axle ...................................
2,430 lb (1,103 kg)
3,030 lb (1,375 kg)
Center Axle ................................
2,915 lb (1.322 kg)
2,785 lb (1,263 kg)
Rear Axle ...................................
1,665 lb (755 kg)
1,665 lb (755 kg)
Total ...........................................
7.010 lb (3,180 kg)
7,480 lb (3,393 kg)
Weight Distribution With
Payload and Crew:
Front Axle ...................................
2,670 lb (1,211 kg)
3,340 lb (1,515 kg)
Center Axle ................................
3,785 lb (1,717 kg)
3,560 lb (1,615 kg)
Rear Axle ...................................
3,455 lb (1,567 kg)
3,480 lb (1,579 kg)
Gross Weight ..............................
9,910 lb (4,495 kg)
10,380 lb (4,709 kg)
Payload and Crew .......................
2,900 lb (1,315 kg)
2,900 lb (1,315 kg)
Towed Load Allowance ................
6,200 lb (2,812 kg)
6,200 lb (2,812 kg)
Center of Gravity
(Based on Rated Payload)
Above Ground .............................
36.2 in. (0.92 m)
36.2 in. (0.92 m)
From Rear of Center Line
Center Axle ................................
7.8 in. (0.20 m)
2.5 in. (0.06 m)
*With pioneer tools removed from tailgate bracket.
**Over top of center wheels.
**'With canopies, bows, and side racks removed, and windshield lowered.
Vehicle Classification: Unloaded (Curb Weight
and Crew) ......................................
3
Loaded (Payload and Crew) ..............
4
Turning Radius...................................
29 ft (8.84 m)
Angle of Approach ............................
6030'
Angle of Departure .............................
45
Tire Size ...........................................
11.00 x 18 (0.28 x 0.46 m), 6-ply
Tire Pressure:
Highway .........................................
22 psi (1.55 kg/sq cm)
Cross-Country ................................
18 psi (1.26 kg/sq cm)
Snow .............................................
12 psi (0.84 kg/sq cm)
NOTE
When shipping M561 there should be 32 pounds per square inch of air pressure in tires.
Maximum Speed: Land .....................
55 mph (88 km/ph)
Water ................................................
2.5 mph (5 km/ph)
2-3
