| M733: General | |||
| Total acceptances | 93 | ||
| Manufacturer | Pacific Car and Foundry Co. | Crew |
|
| M733: Dimensions | |||
| Weight with three MGs and seven men | 11,400lbs 5,170kg |
Height | 67" 170cm |
| Length | 197" 500cm |
Width | 82" 210cm |
| Tread | 58½" 149cm |
Ground clearance | 14"-15½" 36cm-39.4cm |
| Ground pressure at 11,650lb (5,284kg) weight | 2.8psi .20kg/cm² |
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| M733: Armament |
| Various |
| M733: Armor |
| Steel |
| M733: Automotive | |||||
| Engine | Chevrolet 283-V8 Military; 8 cylinder, 4 cycle, vee gasoline | ||||
| Horsepower | Net: 115@3,600rpm Gross: 160@4,200rpm |
Torque | Net: 210 ft-lb@2,400rpm Gross: 240 ft-lb@2,800rpm |
Fuel capacity | 65gal 250L |
| Transmission | Detroit Transmission Div. Hydramatic Model 305 MC, 4 speeds forward, 1 reverse | ||||
| Steering | Allison GS 100-3 geared/clutch-brake, steering wheel | ||||
| Brakes | Multiple plate, oil cooled | ||||
| M733: Suspension | ||
| Type | Road wheels | Track return rollers |
| Torsion bar | 5 individually sprung dual/track | Flat track |
| Drive sprockets | Idlers | Shock absorbers | 11-tooth front drive | Dual adjustable at rear of track | On first and last road wheels/track |
| M733: Track | |||||||
| T125 | |||||||
| Double center guide, band type with replaceable rubber pad | |||||||
| Width | 20" 51cm |
Pitch | 32" long sections; 4" crossbar pitch 81cm long sections; 10cm crossbar pitch |
Shoes/track | 11 sections/track; 88 crossbars/track |
Ground contact length | 103" 262cm |
| M733: Performance | |||
| Max level road speed | 35mph 56kph |
Max water speed | 4mph 6kph |
| Max trench | ~58" ~150cm |
Max grade | 60% |
| Max vertical obstacle | ~18" ~46cm |
Min turning diameter | Pivot |
| Max fording depth | Floats | Cruising range | ~220-260mi, roads ~22mi, water ~350-420km, roads ~35km, water |
The amphibious assault vehicle XM733 project was begun by the US Army in February 1965, and resulted in an amphibious cargo carrier M116 with light steel armor attached to its aluminum hull. The Army abandoned the project in October 1966, but the US Marine Corps negotiated a production contract for 93 armored M733s and a further 111 unarmored M733s. Since the unarmored M733 was essentially just an M116, the soft-skinned vehicles were redesignated M116A1. The M733's armor could protect against .30 caliber ball ammunition, but the vehicle was not configured for use as a combat or assault vehicle, instead just providing small-arms protection for the infantry security elements who usually accompanied marginal terrain vehicles. An M60D machine gun was the primary armament, but as pintles were found at the front and on each side, up to three of the weapons could be mounted. In addition, .50 caliber machine guns could be pintle- or ring-mounted, and even an 81mm mortar could be carried. Weight with one M60D machine gun, one .50cal ring mount, and seven men increased to 11,750lb (5,330kg), and ballooned to 12,500lb (5,670kg) with one M60D, one 81mm mortar, and five men. The vehicle weighed 8,760lb (3,970kg) without crew, stowage, or fuel.
