ROTATING GP-MOTOR 1286172 - Caterpillar

Illustration 1 g00710795
Axle (1) Left axle housing assembly. (2) TrueTrac differential (If Equipped). (3) Right axle housing assembly. (4) Axle brakes (If Equipped). (5) Wheel drive gearbox. (6) Flange.The axle is used to transmit power from the propel motor to the rear wheels. Power from the axle propel motor goes through wheel drive gearbox (4) to the TrueTrac differential (2). The power from the TrueTrac differential goes through the left and right planetary gears to the axle shafts. The axle shafts have flanges (5) in order to mount the wheels. The wheels transfer the power to the ground.
Illustration 2 g00479579
TrueTrac Differential (If Equipped) (2) TrueTrac differential. (6) Pinion. (7) Side gear. (8) Case. (9) Pinion. (10) Side gear.The TrueTrac differential is a gear type limited slip differential. The following features are the two main functions of the TrueTrac differential.
The TrueTrac differential limits the wheel spin and the power loss when one wheel loses traction.
The TrueTrac differential allows differences in wheel speed when the machine is in a turn or on an uneven surface.When the machine is operated in a straight direction and over a smooth surface, the TrueTrac differential operates as a standard differential. Equal force is applied to each side gear (7) and (10). Essentially, the TrueTrac differential equally divides the power between the rear wheels.The TrueTrac differential automatically engages when the compactor makes a turn, or when one of the wheels loses traction. One of the pinions (6) or (9) separates from the side gear (7) or (10). This causes the pinion to wedge into the pockets in the case (8). In this case, the TrueTrac differential proportionally distributes the torque to each wheel so that the wheel with the poorest traction will be controlled. The majority of the torque is transferred to the wheel with the most solid footing.Note: The TrueTrac differential will not engage when one of the wheels is off the ground. A small amount of resistance must be applied to this wheel in order for the TrueTrac differential to properly engage.
Illustration 3 g00475420
Left Axle Housing Assembly (1) Left axle housing assembly. (11) Axle shaft. (12) Sun gear. (13) Planetary gears. (14) Needle bearings. (15) Ring gear housing. (16) Planetary ring gear. (17) Axle shaft retaining bolt. (18) Axle bearing. (19) Seal.The planetary ring gears (16) are pressed into ring gear housings (15). The planetary gears are positioned around the sun gear (12) and within the planetary ring gear (16). Planetary gears (13) are mounted to the carrier by shafts and the planetary gears rotate on needle bearings (14). Each carrier is located inside the planetary ring gears (16). The carriers will rotate at a slower speed than the sun gears. The carriers are connected to axle shaft (11) with internal splines. Axle shaft (11) is mounted in a tapered roller bearing and the end play is adjusted via a shim under axle shaft retaining bolt (17).