SYSTEMS OPERATION - Continued

TM 5-5420-226-20-1 SYSTEMS OPERATION - Continued TRANSMISSION. Cross-drive transmission is controlled by driver with steering and shifting controls and brake pedal. Transmission hydraulic torque converter multiplies engine torque providing automatically variable torque output through planetary gear sets and hydraulically operated clutches and bands to final drive units, sprockets, and tracks. Refer to page 2-21. A. B. c . D. E. TRANSMISSION ADJUSTMENTS. Adjustments are made to mechanical linkages and valves on exterior of engine. TRANSMISSION MOUNTS. Located on each side of transmission serve as powerplant installation guides and mounts. TRANSMISSION COOLING SYSTEM. Cooled oil from transmission air cooler is forced through transmission clutches and bands, through torque converter, acts as driving force in torque converter and lubricates entire transmission. Common oil reservoir supplies all systems. SHIFTING CONTROLS. Shifting controlled by shift lever through system of mechanical links to transmission shift valve that hydraulically controls transmission driving range servosystems. TRANSMISSION OIL COOLER. Oil flowing through oil coolers on each side of engine is cooled by air drawn in by engine cooling fans. Cooled oil flows through main oil supply line, and flow control thermostats in coolers stop oil circulation until oil is at operating temperature. 2-20