Wednesday, January 7, 2009

CUCV, Military Surplus Trucks

In the previous post, I described a military surplus Chevy pickup truck that some friends and I used to haul a camper off a mountain. Here is more information about those trucks, which are a common sight in any town that has a National Guard post.
The truck we used is an M1028A1.

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Commercial Utility Cargo Vehicle

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The Commercial Utility Cargo Vehicle or CUCV Program was instituted to provide the United States military with a cheaper vehicle to augment the purpose-built, but expensive, Gama Goats and Humvees then coming into service. It initially provided Dodge D Series and then Chevrolet C/Ks with several military modifications. All were phased out sooner than expected due to their inability to survive the hardships that the purpose built vehicles could endure. The vehicle has five basic configurations; cargo, utility, ambulance, shelter carrier, and chassis. The vehicles were purchased in the late 1970s and early 1980s from Chrysler Corporation, Dodge Division, and in the late 1980s from General Motors.



[edit] Dodge CUCV's

Dodge M880 right front
Dodge M880 rear

The CUCVs had 12 volt electrical systems and were powered with the 318 cubic inch gasoline engine. The CUCVs were an attempt by the U.S. military to use COTS (commercial, off-the-shelf) vehicles with minor modifications in non-combat roles. They were intended to replace the M37 Cargo Trucks and the M715 Cargo Trucks and related variants.

Around 1973, Dodge began developing the M880 series trucks, which were militarized adaptations of their current model 4x4s. These trucks weren’t known as CUCVs at the time, but were in use for many years. They had two failings, a gasoline powerplant and 12-volt electrical systems. The electrical system was addressed by upgrades where needed, but the gasoline engine was a fatal flaw to a military increasingly going diesel. Around 44,000 were produced during the 1976 and 1977 model years, serving until the early 1990s.

An armoured variant was built by Cadillac Gage as the Ranger.

[edit] Specs

- Chrysler 318 cubic inch engine (5.2 liters) - 2 bbl Carburetor - Torqueflite 727 automatic transmission - New Process 2-speed transfer case, NP203 (full-time 4x4) - Leaf springs all around - Dana 44 solid front axle (1:4.09 gearing) - Dana 60 solid rear axle (full-floating, 1:409 gearing) - Front disc brakes - Rear drum brakes - Manual Steering

M880's and M887's at Fort Riley, Kansas in 1981-83 had one barrel carburetors with leaky fuel bowls. The civilian 2bbl was very superior in off road (oil exploration) service.

[edit] Four wheel drives

  • M880 - Basic Dodge 4x4 Pickup truck Model.
  • M881 - M880 fitted with additional 60-amp 24-volt generator.
  • M882 - M881 fitted with communications equipment.
  • M883 - M881 fitted with slide-in shelter kit.
  • M884 - M880 fitted with 100-amp 24-volt generator and slide-in shelter kit with tie-downs.
  • M885 - M880 fitted with slide-in shelter kit with tie-downs.
  • M886 - Ambulance model based on M880.
  • M887 - Maintenance body based on M880.
  • M888 - Telephone maintenance body based on M880.

[edit] Two wheel drives

  • M890 - 4x2-wheel drive version of the M880.
  • M891 - M890 fitted with additional 60-amp 24-volt generator.
  • M892 - M890 fitted with additional 60-amp 24-volt generator and communications kit.
  • M893 - 2-wheel drive ambulance version.

[edit] General Motors

A Lithuanian ArmyM1008 CUCV Pickup

The GM CUCV's were produced in the 1984-86 time period (mostly 1984) and were powered by 6.2L Detroit Diesel V8 engine. The GM CUCVs were assembled mostly from the heaviest duty bits and pieces from the light commercial truck lines. The CUCVs came in three basic body styles, a pickup, a utility and an ambulance body. A chassis cab fitted with a service body could be called a fourth. They were given “M” numbers and the trucks were all rated as 1-1/4 ton (commonly called a “five-quarter”), even though some of them had payloads in excess of that. The M1008 was the basic 5/4 cargo truck, the M1010 was the ambulance and the M1009 3/4 ton utility rig, which was a stripped Blazer uprated to 3/4-ton capacity. In the truck lines there were some heavy duty variants, to include the M1028, M1028A1, M1028A2 and M1028A3 shelter carriers, the shelter being a mobile command or communications enclosure. The M1031 was the chassis cab which was most commonly found in the two door version. These latter trucks were all rated for heavier 3,600 or 3,900 pound loads, vs. the M1008s 2,900 pound load capacity. The M1028A2 and A3 models had dual rear wheel axles (Dana 70 axle) and are uncommon.

All the CUCVs were powered by GM’s 6.2L J-series Detroit Diesel V8 engine non-emissions diesel. These were rated at 135 hp (101 kW) and 240 lb·ft (325 N·m), which was 5 hp (3.7 kW) more than the emissions gasoline engine of the time. They were all equipped with the TH-400 automatic. All but the M1028A1 and M1031 used a heavy duty version of the NP-208 chain drive transfer case. The M1028A1 and M1031 units had a slip-yoke rear output version of the NP-205, which was specified mainly for its PTO capacity.

The M1009 Blazer used a standard 10-bolt front axle, but had a 10-bolt in back with an Eaton Locker (“Gov-Lok”) and 3.08:1 gears. The trucks all used open Dana 60 front axles, with the M1028 and M1031 series rigs having a Trac-Lok limited slip. In the rear, the M1008s used the beefy GM 10.5-inch (270 mm) “14-bolt” rear axle with No-Spin lockers (the commercial trade name for the Detroit Locker). Axle ratios were 4.56:1, though the duallies are reputed to have had 4.88:1.

As with other military vehicles, the CUCVs used a 24-volt electrical system. It was actually a hybrid 12/24-volt system that used 24-volts under the hood, complete with dual 100 amp alternators, the mandatory NATO slave receptacle for jump starting any NATO vehicle, and hookups for military radios. The rest of the truck was 12-volt. It was a bastardized setup, but it worked.

GM produced some 70,000 from 1983 to 1986 most for the military. For the past several years, GM Defense has been working over the newest GM trucks as CUCV-II and CUCV-III units for a new generation. The older Dodge M880s were used on the battlefield in some of the brush wars of the early 1980s and the results were reported to be “disastrous.” Likewise, the GM CUCVs saw combat time in Desert Storm and as one unit commander said, the results were “less than desirable.” As a result most CUCV's were replaced by the same HMMWV's they were to augment.

The GM CUCV may not have made the grade as a battlefield vehicle, but it served well in its original role as a dollar-saving bridge between out-and-out tactical vehicles and dedicated civilian vehicles. Like the rear echelon human troops, they provided support for the major goals of the military, namely to project a mighty frontline tactical fist wherever needed. There are still many CUCVs wearing green but there are also many that have passed through the surplus gates into civilian life.

[edit] CUCV

  • M1008 - Basic General Motors Model K30903. The M1008 was the most numerous of the CUCV truck types. It was often seen with troop seats for eight in the bed. Some of the unique accoutrements to a CUCV are the military brush bars and tow hooks front and rear, as well as a pintle hitch. These trucks are rated to tow 3,000 pound cross country and were often used to tow the M101 3/4 ton trailer.
  • M1008A1 - M1008 fitted with additional 100-amp 24-volt generator and communications kit.
Right Front view M1009 CUCV
Right View M1009 CUCV
  • M1009 - Utility version of the General Motors Chevy K5 Blazer 2nd edition. The M1009 is a utility rig built from a Blazer and could be used for command and control, as well as simple hack-around duties. It was often seen with radio sets installed, however the large square tube stock mounts prevented the rear seat from being lowered. The M1009 was rated for a 1,200 pound payload and a 3,000 pound towed load. It used the heaviest duty GM springs available for the chassis and the rear axle was a 10-bolt unit. It rolled on 10.00-15 tires, had 3.08 gears and a rear Gov-Lok.
  • M1010 - Ambulance version of the General Motors Model K30903.
  • M1010 [USMC Command] - USMC command post vehicle.
  • M1010 [USMC Ordnance] - USMC ordnance repair truck.
  • M1028 - Shelter carrier version of the General Motors Model K30903.
  • M1028FF - Fire fighting version of the General Motors Model K30903.
  • M1028A1 - Shelter Carrier w/ PTO version of the General Motors Model K30903.
  • M1031 - Chassis of the General Motors Model K30903.

[edit] CUCV Specs

Typical Specifications: '83-8 GM M1008 CUCV Engine 379ci (6.2L) V8 diesel Power: 135 hp (101 kW) @ 3600 rpm Torque: 240 lb·ft (325 N·m) @ 2000 rpm Compression Ratio: 21:1 Transmission: TH-400, 3-speed automatic Transfer Cast NP-208 (unsynchronized) Front Axle an open DANA 60 there was a rare lot with a Spicer Trac-loks on M1028's Rear Axle GM 10.50 (14-bolt), w/Detroit Locker Axle Ratio: 4.56:1 Wheelbase: 131.5 inches GVW 8,800 pounds Curb: Weight: 5,900 pounds Tires: 235/85R-16E Fuel Capacity 20 gallons Fording Depth: 20 inches Approach/Angle: 42 degrees Top Speed: 55 mph (military rating)

[edit] CUCV II

Chevrolet had been building a few CUCV's since the 1986 model year, mainly in low numbers to accommodate military markets that need replacements or other units that need this style of vehicle. In 1996 Chevrolet decided to start building a new generation of a CUCV to try and regain their marketplace in this niche. Mostly the US Air Force was occasionally buying small batches of these units and then GM dubbed them as the CUCV II generation. These were produced through 2001 and were civilian units sent to another plant for "militarization" on special order. They are basic K30's (1 ton chassis) that were originally built as white in color with gray vinyl interiors. After the usual 383 green CARC paint jobs, the bumpers and grill were the next to get customized with pintle and towing/loading shackles, extra leaf springs installed to give them a 5/4 ton rating and a host of other small changes. All CUCV's have a 24volt dual battery starting system, The rest of the truck is 12 volt with resistors on the firewall to bring it down to 12 volts. All heavy duty items are used and they are very similar to the early CUCV's.

[edit] CUCV III

In 2002, GM introduced the CUCV III with the new body shell. Both the II and III come with AM-FM stereo and Air Conditioning. They also come with available options such as: Brushguard, Air Compressor, On Board Navigation System, 120 VAC Inverter, front or rear winch and runflat tires.

[edit] Light Service Support Vehicle

Light Service Support Vehicle (LSSV) (Formerly Commercial Utility Cargo Vehicle - CUCV II AND III) and is known in Canadian service as the Light Utility Vehicle Wheeled (LUVW), 4x4, MIL COTS. The LSSV is a GM-built Silverado 2500 HD and is powered by a Duramax 6.6 liter turbo diesel engine. The LSSV is available in a crew cab or standard cab. It can also be equipped with the Enhanced Mobility Package which adds underbody protection, a tire pressure monitoring system, and other upgrades. All LSSV's are produced by AM General, a unit of MacAndrews and Forbes Holdings.

[edit] See also

[edit] External links


The Scavenger said...

Tracy, I love 'em old trucks man. My buddies used to have a dodge surplus that they used at their hunting camp. That think was great. Thanks for the post and the info.


Bullseye said...

Can I just give you my order for one of each ??? lol Good post man.

Tracy said...

I love old trucks too, always have.
My all-time favorite milsurp truck is the M715/725 Jeep pickup and ambulance. Those were some tough trucks. Of course, all the military Dodge Power Wagons are cool too.

Cygnus MacLlyr said...

Don't know why the honor, but seing some traffic on my site via yours...
Thanks for the info-- admittedly mostly over my head, 'cause i ain't got no clue 'bout internal combustion specs... but can bust a tomato or three from a homegrown vine! Guess we all got something to contribute. So I'm hoping, anyhows...