ROTOR 0973550 - Caterpillar

Power Train Electronic Control System
Illustration 1 g03542818
(1) Final drive
(2) Service brakes
(3 ) Brake control valve
(4) Power train ECM
(5) Steering control lever
(6) Torque converter housing
(7) Service/Decelerator pedal
(8) Power train oil filter
(9) Power train oil pump
(10) Transmission
(11) Transmission output speed sensors
(12) Torque converter output speed sensor
(13) Torque converter oil temperature sensor
(14) Service brake pedal position sensor
(15) Power train oil filter bypass switch The Power Train System performs three main functions for track-type tractors.
Transmission Shifting
Braking
SteeringMain drive shaft transfers power to the planetary power shift transmission. The power output from transmission turns transfer and bevel gears. Transfer and bevel gears turn the inner axle shaft. The inner axle shaft sends power to steering differential and to planetary gears. Steering differential works with planetary gears in order to send power through the two outer axle shafts to final drives. Final drives use two planetary gear arrangements for double speed reduction. The sprockets on the final drives transfer mechanical power to tracks that move the machine. Brakes are a part of planetary gears and steering differential. The brakes are applied by springs and the brakes are released by hydraulic pressure.