DOOR GP-ROTOR 7R4753 - Caterpillar

Illustration 1 g00702731
Typical Components of the Scraper Power Train (1) Transmission transfer gears (2) Drive shaft (3) Engine (4) Retarder (5) Engine transfer gears (6) Torque converter (7) Transmission (8) Bevel pinion (9) Differential and bevel gear (10) Final drive (11) WheelThe scraper transmission has eight speeds FORWARD and one speed REVERSE. The scraper transmission is controlled by an electrical system and a hydraulic system. The selection of any scraper transmission speed position is automatic. There are no manual shifts for the scraper transmission. All shifts are controlled by the tractor transmission control system and the scraper transmission control system. The power will flow from engine (3) to the scraper wheels (11) in the following way. First, the power will flow from engine (3) to retarder (4). Next, the power will flow from retarder (4) to engine transfer gears (5). The power will then flow from engine transfer gears (5) to drive shaft (2). Next, the power will flow from drive shaft (2) to transmission transfer gears (1). When the transmission is in REVERSE through SECOND speed, the power will flow from transmission transfer gears (1) through torque converter (6) to transmission (7). When the transmission is in THIRD through EIGHTH speed, the power will flow from transmission transfer gears (1) to transmission (7). Next, the power will flow from transmission (7) to bevel pinion (8). The power will then flow from bevel pinion (8) to bevel gear (9). Next, the power will flow from bevel gear (9) through the axles to final drive (10). Lastly, the power will flow from final drive (10) to wheels (11).
Illustration 2 g00702732
Front of Scraper Engine (12) Flywheel scavenge pump (13) Retarder hydraulic control valve (14) Retarder and engine transfer case (15) Two screen assemblies
Illustration 3 g00702733
Rear of Scraper Transmission (16) Transmission oil filter (17) Transmission oil pump and transmission scavenge pump (18) The transfer case for the transmission (19) Magnetic screen (20) Scavenge screen (21) Transmission oil tank
Illustration 4 g00702735
Left Side of Scraper Engine (22) Transmission oil cooler
Illustration 5 g00702736
Top of Left Fender (23) Scraper transmission control