PUMP GP-GEAR 1503467 - Caterpillar

Fourth Speed Forward
Refer to Illustration 1 for the location of the components, as described below. Refer to Illustration 2 for a typical example of power flow in the forward direction.When the transmission is in fourth speed forward, the Number 2 clutch and the Number 3 clutch are engaged. The Number 2 clutch holds ring gear for Number 2 clutch (6) stationary. The Number 3 clutch holds ring gear for Number 3 clutch (9) stationary. Input shaft (23) turns Number 2 sun gear (4). The Number 2 sun gear turns Number 2 planetary gears (25).Because ring gear for Number 2 clutch (6) is held stationary by the Number 2 clutch, planetary gears (25) move around the inside of the ring gear. The movement of planetary gears (25) causes Number 2 and Number 3 carrier (7) to turn in the same direction as input shaft (23).Ring gear for Number 3 clutch (9) is held stationary by the Number 3 clutch. Because the ring gear is stationary, the movement of Number 2 and Number 3 carrier (7) causes Number 3 planetary gears (26) to move around the inside of the ring gear. The Number 3 planetary gears turn output shaft (22). From the output shaft, power flows through the output transfer gears to the differentials.First Speed Reverse
Illustration 3 g01041701
Power flow in first speed reverse
(1) Ring gear for Number 1 clutch
(2) Ring gear
(3) Number 1 clutch
(7) Number 2 and Number 3 carrier
(9) Ring gear for Number 3 clutch
(10) Number 4 carrier
(11) Number 4 sun gear
(13) Ring gear for Number 4 clutch
(16) Number 6 clutch
(17) Ring gear for Number 6 clutch
(18) Number 6 carrier
(19) Number 6 sun gear
(20) Number 1 carrier
(21) Number 1 sun gear
(22) Output shaft
(23) Input gear and shaft
(24) Number 1 planetary gears
(25) Number 2 planetary gears
(26) Number 3 planetary gears
(27) Number 4 planetary gears
(28) Housing assembly
(29) Number 6 planetary gears When the transmission is in first speed reverse, the Number 1 clutch and the Number 6 clutch are engaged. The Number 1 clutch holds ring gear for Number 1 clutch (1) stationary. The Number 6 clutch holds ring gear for the Number 6 clutch (17) stationary. Input shaft (23) turns Number 1 sun gear (21). The Number 1 sun gear turns Number 1 planetary gears (24). Number 1 carrier (20) has a direct mechanical connection with ring gear for Number 1 clutch (1).Because ring gear for Number 1 clutch (1) is held stationary by the Number 1 clutch, Number 1 carrier (20) is also held stationary. The movement of Number 1 planetary gears (24) causes ring gear (2) to turn in the opposite direction of input shaft (23). Ring gear (2) has a direct mechanical connection with Number 2 and Number 3 carrier (7).As the Number 2 and Number 3 carrier turn, Number 3 planetary gears (26) turn. The Number 3 planetary gears turn ring gear for Number 3 clutch (9) and output shaft (22). Ring gear for Number 3 clutch (9) turns Number 4 carrier (10). As the Number 4