HOSE AS 2T2986 - Caterpillar

Operation Of Nospin Differential
When a wheel is made to turn faster than the speed of the bevel gear, the "clutch action" (the stopping of power to a drive axle) of the NOSPIN differential will let this axle turn faster than the speed of the bevel gear.The "clutch action" of the NOSPIN differential is as follows: If spider (17) is turning, the spider key (19) puts center cam (15) in position and the center cam and spider (17) turn at the speed of the bevel gear. Holdout ring (8) and cam (21) turn at the speed of the bevel gear. The spider turns driven clutch (6) at the speed of the bevel gear. The driven clutch turns the side gear, axle, and wheel at the speed of the bevel gear.When the wheel is made to turn faster than the speed of the bevel gear, the teeth of center cam (15) work like ramps and the teeth of cam (21) move up the teeth of the center cam. This action causes driven clutch (6) to be not engaged with the spider. The driven clutch pulls the holdout ring (8) out of the grooves in the center cam. The friction between the holdout ring and driven clutch turns the holdout ring until notch (20) in the holdout ring engages with spider key (19). The holdout ring is now turned by the spider key at the speed of the bevel gear. The teeth of the holdout ring are now in a position so they can not engage the grooves in the center cam. The driven clutch and cam move around the holdout ring at a speed faster than the speed of the bevel gear. The holdout ring keeps the driven clutch and cam from being engaged with the center cam and spider. The driven clutch, cam, axle, and wheel now turn freely.The opposite side clutch, cam, and holdout ring are held engaged to the center cam and spider by the natural resistance of the wheel that is turning slower.When the speed of the wheel that is not engaged becomes slower and near the speed of the bevel gear, the resistance of the ground to the wheel causes the torque on this wheel to be in a small reverse direction. This causes the driven clutch and cam to turn in a direction opposite the direction of the bevel gear. The friction between the holdout ring and the driven clutch causes the holdout ring to move in a direction opposite the direction of the bevel gear. Notch (20) in the holdout ring moves away from spider key (19). When the teeth of the holdout ring are in a position to engage the grooves in center cam (15), the force of the spring causes the driven clutch and cam to move to the inside. The driven clutch pushes the holdout ring. The holdout ring now engages the center cam and is turned at the speed of the bevel gear. The teeth of cam (21) now