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M1028 Truck, Cargo, Tactical, 1 1/4 Ton, 4x4 Chevrolet CUCV
The M1028 cargo truck is a model of the M10xx Chevy Commercial Utility Cargo Vehicles (CUCV) series of trucks. The linked page provides more information on the general characteristics of the Chevrolet CUCV trucks, varaints and kits, and a directory of links to Olive-Drab.com pages for other models of the series.
The M1028 CUCV and its variants are light commercial trucks with a pick-up body, with military modifications, designed to provide standard tactical mobility and to carry the S-250 electronics/communications shelter. The M1028 and its variants are derived from the M1008 Truck, Cargo, Tactical, 1 1/4 Ton, 4x4 pick-up truck but with upgrades including a heavier rear suspension with an overload leaf spring. There is no visual distinction between the M1008 and the M1028 series trucks, except for dual wheel models.
The nomenclature and features of the M1028 variants are:
M1028 Truck, Shelter Carrier, Tactical, 1 1/4 Ton, 4x4 (S250 commo shelter, communications kit and 24v/100 amp electrical) (NSN 2320-01-127-5077)
M1028A1 Truck, Shelter Carrier w/PTO, Tactical, 1 1/4 Ton, 4x4 (Same as M1028 with NP205 transfer case for PTO) (NSN 2320-01-158-0820)
M1028A2 Truck, Shelter Carrier w/PTO, Tactical, 1 1/4 Ton, 4x4 (Same as M1028A1 plus dual rear wheels) (NSN 2320-01-295-0822)
M1028A3 Truck, Shelter Carrier, Tactical, 1 1/4 Ton, 4x4 (Same as M1028A2 with NP208 plus dual rear wheels) (NSN 2320-01-325-1937)
M1028FF Truck, Firefighting, 1 1/4 Ton, 4x4 (M1028 with fire fighting equipment in cargo bed) (NSN 4210-01-259-4609)
Quoting for TM 9-2320-289-20, Change 2 (1 May 1992):
"The M1028 has a 100amp/24v electrical system, and will accept an S250 communications shelter and a communications kit. The M1028A1 is equipped with a New Process Model 205 Transfer Case which allows for the addition of a power take-off (PTO) unit. Some M1028s have been equipped with heavy-duty electrical systems that incorporate the M1010 200 amp/24v electrical system and air conditioner fixtures. These M1028s have not been provided with a different designation. The M1028A2 is an M1028A1 which has been converted to rear dual wheel configuration. The M1028A3 is an M1028 which has been converted to a rear dual wheel shelter carrier configuration and is equipped with a New Process 208 Transfer Case."
Tabulated data for the M1028 Truck, Cargo, Tactical, 1 1/4 Ton, 4x4 CUCV:
Engine
GM (Detroit Diesel) 379 cu in. (6.2L) J-series non-emissions diesel V-8 engine, 135hp@3600rpm
Transmission
GM TH400 (Turbo Hydramatic 400) automatic transmission with 3 forward and 1 reverse speeds
Transfer Case
Manual NP208, except NP205 on M1028A1 and M1028A2. The NP205 has a Power Take-Off capability to use engine power for auxiliary equipment.
Axles
All axles full floating. Front axle on all variants is Dana 60 with Spicer Trac-lok (limited slip) and locking hubs, ratio: 4.56:1. Rear axle on M1028 and A1: 10.5 inch Corporate 14 Bolt with "No-spin/Detroit" differential locker. Rear axle on M1028A2 and A3: Dana 70HD, w/ Detroit Locker, Ratio: 4.56:1, Ratio: 4.56:1
Curb Weight
5800 lbs (2633 kg) M1028, M1028A1 6120 lbs (2778 kg) M1028A2, M1028A3
Payload
3600 lbs (1634 kg) M1028, M1028A1 3940 lbs (1789 kg) M1028A2, M1028A3
Towed Load Allowance
Equipped to tow M101 Series 3/4 ton trailers with maximum towed load of 3100 Ibs. Tongue load not to exceed 300 Ibs.
GVW
9400 lbs (4288 kg) M1028, M1028A1 10,120 lbs (4594 kg) M1028A2, M1028A3
Wheelbase
131.5 in (334 cm)
Length
220.7 in (560.6 cm)
Width
81.2 in (206.2 cm) M1028, M1028A1 95.8 in (243.3 cm) M1028A2, M1028A3
Height
107.1 in (272 cm) (varies with different shelters)
Electrical
12/24 volt dual voltage, 100 amp or 200 amp electrical system
Brakes
Hydraulically activated, power-assisted front disc and rear drum service brakes, silicone fluid
Fording
16 inches (40 cm)
Ground Clearance
7.7 in (19.6 cm) (minimum, rear axle @ GVW)
Tires
LT235/85R-16E Steel Belted Radials
Tire Pressure
Model
Front
Rear
Spare
M1028
45 psi (310 kPa)
65 psi (448 kPa)*
80 psi (552 kPa)
M1028A1
45 psi (310 kPa)
65 psi (448 kPa)*
80 psi (552 kPa)
M1028A2
45 psi (310 kPa)
45 psi (310 kPa)
45 psi (310 kPa)
M1028A3
45 psi (310 kPa)
45 psi (310 kPa)
45 psi (310 kPa)
*Rear tire pressure with shelter loaded is 80 psi (552 kPa).
The above table does not completely apply to the M1028FF Truck, Firefighting. Data from TM 9-2320-289-10, updated through Change 5.
Manuals for the M1008, M1009, M10xx Chevrolet CUCV trucks will be numbered TM9-2320-289-xx where the xx represents the maintenance level. You can purchase the Chevrolet CUCV manuals at ABE Books.
M1028A2 and M1028A3: 1) Flared Rear Fender, 2) Rear Fender Side Markar, 3) Offset Front Wheel Hub, 4) Dual Rear Wheels. Image from TM 9-2320-289-10 Change 5.
M1028A2 or M1028A3 CUCV with air conditioned S250 shelter, supporting the AN/TSC-93B satellite dish, 118th Communications Command Squadron, Badin Air National Guard Base, NC, 18 November 1993.
The M1028FF Truck, Firefighting (also referred to as the M1028FF Twin Agent Unit or TAU) is an M1028 vehicle with a dry chemical fire extinguisher NSN 4210-01-205-2246 mounted in the body. The M1028FF was used by the Marine Corps until the late 1990s. This photo shows the dry chemical fire extinguisher NSN 4210-01-205-2246.
