Big Engine in Oilfield Tractor
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A LEYLAND 11.1-litre engine is PA installed in a Seammell Mountaineer 17-ft. wheelbase tractor which has been supplied to Esso Standard (Libya), Inc., by the General Trade and Motor Co.. Tripoli, Libya, to haul oil-drilling equipment from the port of Tripoli to a site 900 miles away.
The tractor tows a Dyson semitrailer with a platform body 34 ft. long and 9 ft. wide. Normal payloads will be of 20-25 tons, and although roads exist for much of the route that the outfit will cover, the final 60 miles will be run over sand. All the tyres are size 14.00-20 in. and have normal road treads, these having been found to give good traction and notation over sand, Drive from the engine is taken through a six-speed gearbox and transposing box to the front and rear double-reduction spiral-bevel and epicyclic axles. Brakes arc operated by air pressure, and airassisted steering is provided. A Woodfield Senior winch and tubular rack is fitted behind the cab, the winch being driven from a split-transmission type of power take-off which allows all gears, including reverse, to be employed.
The cab is insulated, and the canopy is extended to form, a sun vizor. The electrical system is 24 v.