Mack model EH trucks
| Mack model EH | |
|---|---|
 Mack EH military cargo truck | |
| Place of origin | United States |
| Production history | |
| Manufacturer | Mack Trucks |
| Produced | from 1936 |
| No. built | 2,400+ for military service |
| Variants | EHT semi-tractor, EHU, EHUT (COE models) |
| Specifications (EH[1]) | |
| Mass | 10,500 lb (4,800 kg) (empty) |
| Length | 22 ft 7 in (6.88 m) |
| Width | 8 ft (2.44 m) |
| Height | 9 ft 5 in (2.87 m) (to tarpaulin bows) |
| Engine | Mack EN354 100 hp (75 kW) |
| Suspension | Beam axles on leaf springs |
| Fuel capacity | 120 US gal (450 L) |
Operational range | 275 mi (442.6 km) |
| Maximum speed | 35 mph (56 km/h) |
The Mack model EH trucks were a family of 4x2 trucks used by the US and British military before and during World War II. They were built in conventional and cab-over-engine models and were used as both trucks and semi-tractors. Originally a commercial design, in 1943 a military version became standard.
History
In 1937, the US armed forces bought
In 1943 a military design version of the EH type was destined mainly for Defense Aid. From the total of 3450 EH produced, 2400 were supplied to Britain.[2][3]
After the war, the E series commercial production continued until 1950.
Engine and driveline
The standard engine was the EN310 (Mack) 6 cylinder L-head petrol engine, a
Chassis
The EH had a ladder frame with two beam axles on leaf springs. The military models had two wheelbases, the 146 inches (3.71 m) short for tractors and the 170 inches (4.32 m) long for straight trucks. The variant EHUS had a shorter wheelbase at 132 inches (3.35 m). They were used as fuel servicing trucks in the US Navy or as wreckers for the USMC. The bus chassis had a 230 inches (5.84 m) wheelbase.
Commercial types had split-rim wheels and hydraulic brakes, military types had disk-type wheels and air brakes. The tires were 9.00x20.[3]
Models
There were four basic models. The EH was a conventional straight truck chassis, EHT was a conventional semi-tractor. The EHU was a C.O.E. straight truck chassis, and the EHUT was a C.O.E. semi-tractor. A C.O.E. can have a longer body, but the engine is harder to work on.
Besides the cargo and semi-tractor, there were fuel and water tankers, van bodies, wreckers, bus chassis, and fire trucks.[2][3]
See also
- Mack Trucks
- Mack M123 and M125
- Mack NJU
- Mack NM
- Mack NO
- Mack NR
References
- ^ TM 9-2800 Military Vehicles. US Dept. of the Army. 1947. p. 302. Retrieved 12 April 2016.
- ^ ISBN 0-7603-0526-9.
- ^ ISBN 1-870067-09-6.
- ^ TM 10-1546 Mack 5 ton 4x2 Parts List Models EH, EHU, EHT, EHUT. US War Dept. 1942. p. 4. Retrieved 12 April 2016.
External links
- TM 10-1546 Mack 5 ton 4x2 Parts list. August 1942. Retrieved 18 November 2014.
US military soft-skinned vehicles of World War II | |
|---|---|
| 1⁄4–3⁄4 ton vehicles | |
| 11⁄2–4 ton trucks | |
| 5–10 ton trucks | |
| Tank transporters | |
| Amphibious vehicles | |
Tracked tractors & carriers | |
| Motorcycles | |
| Trailers |
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