PINION (19 teeth) 6G8669 - Caterpillar

Illustration 1 g03552060
(1) Diesel engine
(2) Power train ECM
(3) Service brake pedal
(4) Decelerator pedal
(5) Rotary speed sensor
(6) Torque converter housing
(7) Torque converter outlet speed sensor
(8) Torque converter inlet relief valve
(9) Transmission
(10) Bevel gears
(11) Final drive
(12) Transmission hydraulic control valve
(13) Pin puller (if equipped)
(14) Power train accumulator
(15) Steering clutch and brake control valve
(16) Power train oil filter
(17) Kidney loop filter
(18) Service brake
(19) Power train oil pump
(20) Torque converter outlet relief valve
(21) Tracks
(22) Power train oil cooler The planetary transmission has three FORWARD and three REVERSE speeds. The speed and direction of the planetary transmission are electronically controlled by the power train ECM with inputs from the operator. Power is directed to the planetary transmission. Power is then directed to the transfer and bevel gears. The transfer and bevel gears turn two inner axle shafts that send power to the steering clutches and brakes.Steering clutches turn the machine. The brakes stop the machine and work with the steering clutches in turning the machine. The steering clutches and the brakes are electronically controlled by the power train ECM with inputs from the operator.Power from the steering clutches and brakes is used to turn two sun gear shafts that turn the final drives. The final drives are single reduction planetary gear sets that send the power to the sprockets.The sprockets drive the tracks.