Mack Truck Service Manual for model B73LT. This manual accompanied the purchase of 2 B-73LT trucks with serial numbers 1423 and 1424. The trucks were sold to Pacific Cement and Aggregates, 400 Alabama St., San Francisco, CA. The manual is dated June, 1957 and covers the following chapters: General Data, Instruments and Controls, Operation, Lubrication, Preventive Maintenance, Engine, Fuel System, Cooling System, Electrical System, Clutch, Transmission, Propeller Shaft, Brakes, Steering, Front Axle, Rear Axle, Wheels, Springs, Frame, Body, Hoist, Winch, Tools and Service. The two trucks were equipped with 200 HP Cummins NHBL diesel engines (lightweight) so there is a separate chapter on the Operation and Maintenance of Cummins Diesel Engines and covers the following engine models: H, HS, HR, HRS, NH, NHS, NHRS, NHH, NHHS, NHHRS, NT and NRT. This manual is approximately 1 inch thick, professionally reprinted.
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