M35 Series - 2 1/2 Ton 6X6 Truck

M35 Series 2.5 Ton 6X6 Truck

M35 Series

2.5 Ton 6X6 Truck

The M35 Family of 2.5 Ton Trucks have been commonly known as "deuce and a half". Production started in 1949, and lasted until 1988, with the first delivery to the U.S. Army in 1950. These trucks are still currently active all around the world, utilized by the military and civilians. Due to the availability and durability, the M35 series has many variants which include cargo trucks, dump trucks, tank trucks and wreckers, just to name a few.

M35 Series - 10,000Lb 6X6 Military Truck

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M35 Key Characteristics

Cab Crew

  • Driver
  • 1 Passenger

Mobility

  • Engine: REO OA-331 127 HP (95kW)
  • Transmission: 5 Speed, Manual
  • Speed Limit: Top Speed 56mph (90km/h) / Max Cruising Speed: Approx. 48mph (77km/h)
  • Maximum Range: 400-500 miles (600-800km)
  • Fuel Capacity: 50 Gallon Tank (190L)

Dimensions

  • Length: 274in (6.98m)
  • Width: 93in (2.36m)
  • Height: 111in (2.82m)
  • Weight: With Winch 12,880lbs (5842kg) empty
  • Weight: Without Winch 12,470lbs (5656kg) empty

Biography of the M35 Series of Trucks

Initial production for the M35 was done by REO Motor Car Company. They were first delivered to the U.S. Army in 1950, as a replacement for the GMC CCKW and M135 family cargo trucks. The M34 6-wheel, 2 ½ ton was actually produced first in 1949, but was quickly superseded by the 10-wheel, M35 design. The M36 was a long 10-wheeled variant that featured a 16ft (4.8m) cargo bed, which doubled the standard 8ft (2.4m). The M34/35/M36 was designated as G742 by the U.S. Army Ordnance Corps Supply Catalog. The M35 was originally intended for U.S. Army use but has also been utilized by many nations around the world while evolving into a family of specialized vehicles such as cargo trucks, tank trucks, wreckers, gun trucks, vans, “war wagons” and guided missile launchers. The M35s served the U.S. Military well into the late 1990s, with some still used today in active and reserve components across many foreign armies. By the early 1980s, over 150,000 units were produced with production ending in 1988.

The M35 truck series came in a wide variety of variants and sub-variants. The main variants were the original standard, A1, A2 and A3. The original M35 had a REO Continental OA331 6-cylinder gasoline engine. Most had a 5 speed transmission but only some had a 4 speed. The first A1s had a Continental LDS-427-2 turbo engine with a 4-450 Schwitzer turbo, with the later A1s having a 4D454C Schwitzer turbo and 5th gear was overdrive. The first built A2 trucks had bigger LD-465-1, naturally aspirated (no turbo or super charger) 478 CID multi fuel engines, while keeping the transmission of the A1s. The later produced A2s were upgraded to LD 465-1C engines with the addition of a turbo charger. In 1994, the A3 variant was announced as part of an Extended Service Program, which lasted until 1999. These units had a new Caterpillar 3116 Diesel engine and the manual transmissions were replaced with automatic transmissions. Along with a redesigned frontal appearance, some other improvements included a new cooling system, reworked axles and transfer case.

The M35 was based off the M44/M45 basic chassis. The truck had no key for the ignition. To start it, it would need to be put in neutral and press a few switches. The engine was located in the front, crew cab directly behind and the cargo bed in back. The chassis was 10 wheels across 3 axles with the 2 rear axles holding 4 wheels a piece. The engine was exhausted through an upright pipe along the right side of the crew cab and the fuel tank was placed along the right side under the passenger seat floor. The weight of a M35 was between 13,000lbs (5900kg) and 16,000lbs (7500kg) empty varying on the configuration. Even though the M35 cargo truck was only rated to carry 10,000lbs (4,500 kg) on flat roads and 5,000lbs (2,300 kg) off-road, they have been known to carry twice as much.

M35 Variants

M34

M34 - Cargo Truck

NSN w/ winch 2320-00-835-8536
NSN w/o winch 2320-00-739-7545


The M34 cargo hauler was the first design in the M34/35/36 series, produced by REO Motor Car Company and delivered to the U.S. Army in 1949. This design was a 6-wheeled basic cargo hauler that was short lived and quickly superseded by the M35 10-wheel design.

M35

M35 - Cargo Truck

NSN w/ winch 2320-00-835-8464
NSN w/o winch 2320-00-835-8463


The M35 cargo hauler was delivered to the U.S. Army in 1949, as an upgraded version of the 6-wheel M34 design. It was produced by REO Motor Car Company. This version was a 10-wheel design with 4 wheels on last the 2 axles. The cargo bed was 8 ft. (2.4m), and wood stake sides with folding troop seats and canvas cargo cover. Powered by a REO Continental OA331 6-cylinder gasoline engine with 127hp and either a 4 or 5 speed transmission.

M36

M36 - Cargo Truck

NSN w/ winch 2320-00-647-0505
NSN w/o winch 2320-00-647-0505


The M36 cargo hauler was the same build as M35 except the cargo bed was 16ft (4.8m) long instead of 8ft. (2.4m).

Modernized M36 Models:
M35A1

M35A1 - Cargo Truck

NSN w/ winch 2320-00-542-5634
NSN w/o winch 2320-00-542-5633


The first upgrade to the M35 was the A1. There were two series of the A1 upgrades, with the first one having a Continental LDS-427-2 turbo engine with a 4-450 Schwitzer turbo. The later version of the A1s had a 4D454C Schwitzer turbo with 130hp. The transmissions were upgraded with 5th gear being overdrive.

M35A2

M35A2 - Cargo Truck

NSN w/ winch 2320-00-077-1617
NSN w/o winch 2320-00-077-1616


The A2 variant was the most common and still is to this day. The first built A2 trucks had a bigger LD-465-1, naturally aspirated (no turbo or super charger) 478 CID multi fuel engine with 140hp, while keeping the transmission of the A1s. The later A2s were upgraded to LD 465-1C engines with the addition of a turbo charger with 210hp.

Modernized M35A2 Models:
M35A3

M35A3 - Cargo Truck

NSN w/ winch 2320-01-383-3850
NSN w/o winch 2320-01-383-2047


In 1994, the A3 variant was announced as part of an Extended Service Program (ESP), which lasted until 1999. The ESP included the following upgrades:

  • Redesigned frontal appearance
  • New Caterpillar 3116 Diesel engine (225hp)
  • New Allison 1545 automatic transmission
  • New cooling system
  • Reworked axles and transfer case
  • New electronically controlled central tire inflation system
  • Super single radial tires
  • Air-assist steering
  • Improved independent circuit air/hydraulic brake system
  • Three-point seat belts
  • New ergonomically designed driver's seat
  • Electric windshield wipers and washer
  • Improved heater and defroster system

M49

M49 - Fuel Tanker

NSN w/ winch 2320-00-835-8341
NSN w/o winch 2320-00-835-8545


The M49 was designated as a fuel tanker. The early models had a 1,200-gal (4542L) tank that was composed of 3 units. The front held 200-gal (757.1L), 400-gal (1514.2L) in the midsection and a baffled 600-gal (2271.2L) in the back. That design was superseded in later produced units, by just 2 baffled 600-gal (2271.2L) units. A delivery pump was fastened to the back unit and was used to fill or empty the tanks. Two sections make up the wiring harness each with their own protection. The chassis wiring section was insulated against gasoline fumes and the front section was waterproofed. The tanker carried a 35ft (10.7m) 1 ½ in (38.1mm) thick reinforced hose that was attached to the driver side of the tank.

Modernized M35A2 Models:
M50

M50 - Water Tanker

NSN w/ winch 2320-00-174-1601
NSN w/o winch 2320-00-835-8344


The M50 was designated as a water tank. They came in 2 body styles, one was with a rectangle wheel well and the other had a straight body side. Both styles had a 1000-gal (3785.4L) water tank. This variation is still used today as a wildland fighting truck containing a portable water supply and fully operational pump.

Modernized M50 Models:
M60

M60 - Wrecker, Light

NSN 2320-00-835-8343


The M60 was designated as a wrecker, light. The intentions of the wrecker were more for recovery operations, but it was faced with many obstacles due to its weight restriction and was replaced by the 5-ton (4536kg) M816 wrecker, medium. The M60 had a crane located on the back that had the ability to be hydraulically navigated 270° and up to a 45° elevation angle. There were two winches mounted on the frame. The front winch had a capacity of 10,000lbs (4536kg) and the rear winch had a capacity of 15,000lbs (6803.9kg). For stabilization there were two outriggers mounted on either side of the crane platform and a walking beam suspension on the rear axle. Austin-Western is the company that built the cranes for the M60s.

M108

M108 - Wrecker/Crane

NSN w/ winch 2320-00-835-8526
NSN w/o winch 2320-00-690-7500


The M108 was designated as a wrecker crane. The M108 was used more as a crane along with various other tasks like deploying Lacrosse missiles. Just like the M60, due to the weight restrictions it faced obstacles and was replaced by the 5-ton (4536kg) M246. The M108 design was very similar to the M60 wrecker, light. It had the same boom as the M60, only the M108 did not have a rear winch. The M108 body had arcs above each rear wheel which also separated it from the M60. Austin-Western is the company that built the wrecker cranes for the M108.

M109

M109 - Shop Van

NSN w/ winch 2320-00-289-6473
NSN w/o winch 2320-00-835-8515


The M109 was designated as the basic shop van model. The M109 consisted of a large 12ft (3.7m) van body and had numerous purposes. There have been multiple variants developed to the basic model. The M185 was used as a machine shop with the ability to carry a light duty crane along with tools and could also tow a M105 trailer, if needed. The M132 was used as a medical van. The M292 was a longer 17ft (5.2m) van that used a hydraulic lift gate. There were a few variants that were made into specialized service vehicles designed for the MGM-18 Lacrosse missile system, such as the XM411, for the Ground Guidance Electronic Equipment, and the XM412, with the special tools and test equipment for the guidance system.

Modernized M50 Models: