RETAINER-SHAFT 8S6247 - Caterpillar

Ratio Valve for Converter Inlet
The ratio valve (16) for the torque converter, controls the maximum pressure to the converter. Its primary purpose is to prevent damage to the converter components when the engine is started with cold oil.The pressure to the torque converter, caused by restrictions to flow, is felt against the left end of valve spool (16). This pressure pushes against the whole diameter of the valve spool.Pressure from the P1 clutch circuit is felt in the slug chamber of the valve spool. This pressure pushes against only the diameter of the slug.The pressure (on the left end of valve) needed to move the valve to the right is less than the pressure (in slug chamber) needed to move the valve to the left.When the inlet pressure to the torque converter gets to its maximum, the valve spool moves to the right. This lets the extra oil go to the reservoir. When the pressures are again in balance, the valve moves back to the left.All oil, not used by the clutches goes to the ratio valve for the torque converter.Output Transfer Gears
Output Transfer Gears
(1) Case assembly. (2) Drive gear. (3) Bearings. (4) Shims. (5) Shaft. (6) Gear. (7) Yoke assembly. (8) Shims. (9) Yoke assembly.The output transfer gears are at the output side of the transmission. The transmission output shaft is connected to drive gear (2) by splines.Drive gear (2) is engaged with gear (6). Driven gear (6) is connected to shaft (5) by splines. Yoke assemblies (7) and (9) are connected to shaft (5) by splines. Yoke assembly (7) is connected to the short drive shaft that goes to the rear differential. Yoke assembly (9) is connected to the drive shaft that goes to the bearing cage and then to the front differential.The flow of power through the output transfer gears is:... From transmission output shaft to drive gear (2). ... From gear (2) to driven gear (6). ... From driven gear (6) to shaft (5). At shaft (5) the flow of power divides as follows:... Part of the power goes from yoke assembly (7) through a drive shaft to the rear differential. ... Part of the power goes from yoke assembly (9) through a drive shaft and bearing cage to the front differential. Shims (4) are used to make an adjustment to the end play of gear (2).Shims (8) are used to make an adjustment to the end play of shaft (5).Output Transfer Gear Lubrication
Since the transfer gear case is also the reservoir for the transmission circuit, all return oil goes to the bottom of the case. The movement of the gears in the oil causes oil to be thrown on all the components.Differentials
Differential and Bevel Gear Group (Top View Of Front Differential)
(1) Case. (2) Bearing cup and cone. (3) Adjustment ring. (4) Side gear. (5) Carrier. (6) Bolts. (7) Bearing cup and cone. (8) Bearing cup and cone. (9) Nut. (10) Lock. (11) Nut. (12) Thrust washer. (13) Pinions. (14) Spider. (15) Bearing. (16)