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- Q1090937 subject Q15275800.
- Q1090937 subject Q7327998.
- Q1090937 subject Q7485139.
- Q1090937 subject Q8632256.
- Q1090937 subject Q8913894.
- Q1090937 subject Q9817973.
- Q1090937 abstract "The M520 'Goer' "Truck, Cargo, 8-ton, 4x4" truck series was formerly the US Army’s standard heavy tactical truck before its replacement by the Oshkosh HEMTT. As trucks go, the Caterpillar 'Goer' stands out, due to being articulated, amphibious, overly wide and lacking suspension on the wheels.In the mid-1950s the US military were looking for a new, extreme off-road, tactical truck series, with substantially increased load-carrying capacity. According to a May 2006 article in Classic Military Vehicle magazine, the United States Armor Board began evaluating and testing commercially available, large, wheeled, articulated-steering, earth-moving equipment for potential tactical application in 1956 / 1957. This resulted in development contracts for 4x4 all-terrain vehicles of various weight classes being awarded to Clark Equipment, Le Tourneau-Westinghouse and Caterpillar Tractor Company.Clark provided a 5-ton prototype, based on their Model 75 log-skidder, powered by a Cummins 6-cyl. diesel engine. Caterpillar's entries were in the eight-ton class and were designated: XM520 (8-ton cargo truck), XM553 (10-ton wrecker recovering) and XM559 (8-ton, 2.500-gallon tanker). Le Tourneau-Westinghouse offered three variants in the 15-ton class: XM437 Cargo, XM438 Tanker and XM554 Wrecker.Without exception, the prototypes consisted of two segments, housing engine and driver's compartment in the front and using the rear part as main transport unit, whereby steering was accomplished by articulating the whole front unit relative to the rear, as opposed to pivot steering the front wheels conventionally. The large wheels with big, low-pressure tyres were mounted without any suspension or steering mechanism, greatly simplifying the design. In order to keep the wheels on the ground on uneven terrain, the front and rear units could not only swivel around a vertical axis, but also along the vehicle's longitudinal axis, allowing significant articulation.The Caterpillar design did well in testing, and in 1960 the company was awarded a multimillion-dollar contract for developing eight 8-ton cargo trucks, delivered in 1961 and 1962, as well as two 10-ton wreckers and two 2500-gallon tankers in 1962. Another twenty-three units were ordered in 1963, and field-tested in Germany in 1964, and later in Vietnam in 1966. Not until 1971 did Caterpillar eventually receive a production contract for 1300 units: 812 M520 cargo-vehicles, 371 M559 tankers and 117 M553 wreckers. Production began in 1972 and lasted through June 1976. When fitted with its own crane, the cargo variant would be designated M877.Not only did the Caterpillar offer extreme off-road ability, including 20° longitudinal articulation and 30° side-slopes, it was also fully amphibious, using the wheels for propulsion in the water. The rear cargo-bed tailgate and drop-side doors, that allowed rapid discharge of cargo, had watertight seals to preserve the unit's swimming capability. In the US’s involvement in the Vietnam War, the Goer developed a reputation of being able to go where other trucks could not, and it was one of the preferred resupply vehicles after the pre-production units' introduction in 1966. They achieved a 90% availability rate even though spare parts for the Goer were not an official part of the US Army inventory until 1972.Nevertheless, the vehicle's lack of suspension made it too bouncy on hardened surfaces, making most drivers shy away from its 31 mph (50 km/h) top speed. The method for keeping bounce to a minimum on hard roads was to gently sway the vehicle left and right at top speed. The bilge pumps were often abused on hard road convoys as "super-squirters" by bored drivers as they would accumulate water in the hull and drivers soon realized havoc could be raised by turning on the high volume pumps to douse passing and oncoming traffic. The oscillating cab was also dangerous as entering or exiting the vehicle with the engine off could put pressure on the steering wheel and when the engine was started the cab would turn without warning. Also its oversize dimensions proved generally awkward, so in the 1980s it was replaced by the Oshkosh Heavy Expanded Mobility Tactical Truck series, that combined good on-road behavior with adequate off-road performance. As the Goers were surplused accordingly, it was done so under a demilitarization order similar to that of the M151 MUTT jeep. Core components in the steering and driveline were destroyed before the remains of the vehicle were sold off. Consequently, only very few vehicles remained in existence, in museums and private collections.".
- Q1090937 height "2.4384".
- Q1090937 layout Q214833.
- Q1090937 length "9.652".
- Q1090937 manufacturer Q459965.
- Q1090937 productionEndYear "1976".
- Q1090937 productionStartYear "1972".
- Q1090937 successor Q1969091.
- Q1090937 thumbnail M520.jpg?width=300.
- Q1090937 transmission "six-speed".
- Q1090937 weight "1.22472E7".
- Q1090937 wheelbase "5.969".
- Q1090937 width "2.7432".
- Q1090937 wikiPageExternalLink The.
- Q1090937 wikiPageWikiLink Q1031942.
- Q1090937 wikiPageWikiLink Q1234272.
- Q1090937 wikiPageWikiLink Q1411533.
- Q1090937 wikiPageWikiLink Q15275800.
- Q1090937 wikiPageWikiLink Q173476.
- Q1090937 wikiPageWikiLink Q174174.
- Q1090937 wikiPageWikiLink Q1969091.
- Q1090937 wikiPageWikiLink Q214833.
- Q1090937 wikiPageWikiLink Q459965.
- Q1090937 wikiPageWikiLink Q474698.
- Q1090937 wikiPageWikiLink Q5127218.
- Q1090937 wikiPageWikiLink Q6600944.
- Q1090937 wikiPageWikiLink Q6600945.
- Q1090937 wikiPageWikiLink Q7327998.
- Q1090937 wikiPageWikiLink Q7485139.
- Q1090937 wikiPageWikiLink Q8632256.
- Q1090937 wikiPageWikiLink Q8913894.
- Q1090937 wikiPageWikiLink Q9212.
- Q1090937 wikiPageWikiLink Q9817973.
- Q1090937 aka "M553 / M559 / M877".
- Q1090937 engine "8603".
- Q1090937 height "14640.0".
- Q1090937 layout Q214833.
- Q1090937 layout "engine behind driver;".
- Q1090937 length "57900.0".
- Q1090937 manufacturer "Caterpillar".
- Q1090937 name "M520 Goer".
- Q1090937 production "1972".
- Q1090937 successor "Oshkosh HEMTT truck system".
- Q1090937 transmission "six-speed".
- Q1090937 weight "27000".
- Q1090937 wheelbase "35820.0".
- Q1090937 width "16440.0".
- Q1090937 type Product.
- Q1090937 type Automobile.
- Q1090937 type MeanOfTransportation.
- Q1090937 type DesignedArtifact.
- Q1090937 type Thing.
- Q1090937 comment "The M520 'Goer' "Truck, Cargo, 8-ton, 4x4" truck series was formerly the US Army’s standard heavy tactical truck before its replacement by the Oshkosh HEMTT. As trucks go, the Caterpillar 'Goer' stands out, due to being articulated, amphibious, overly wide and lacking suspension on the wheels.In the mid-1950s the US military were looking for a new, extreme off-road, tactical truck series, with substantially increased load-carrying capacity.".
- Q1090937 label "M520 Goer".
- Q1090937 depiction M520.jpg.
- Q1090937 name "M520 Goer".
- Q1090937 name "M553 / M559 / M877".