Operator's Manual for Mack Trucks, R model. Revised Edition. Includes chapters on, for example, Brakes, Break-In, Bulb Chart, Circuit Breakers, Cooling System, Drive Train, Dynatard Engine Brake, Instrument Panel, Operating Instructions, Tires and Rims, Wheel Inspection. Nicely illustrated with numerous pictures, charts and tables. Originally published in 1984; professionally reprinted from the original, 111 pages.