LABEL 0098909 - Caterpillar

Operation
Straight Forward or Reverse
When the machine moves in a straight direction with the same amount of traction under each drive wheel, the same amount of torque on each axle holds the pinions so they do not turn on the spider.Pinion (11) turns ring gear (16). Ring gear (16) turns case (1). Case (1) turns shaft (14). Shaft (14) turns side gears (4) and (17) through pinions (15). Pinions (15) do not turn on the shaft. The side gears turn the axle shafts. The same amount of torque is sent to each wheel.This gives the same effect as if both drive wheels were on one axle shaft.Forward or Reverse Turn
When the machine is in a turn, the inside wheel has more resistance to turn than the outside wheel. This resistance causes different torques on the opposite sides of the differential. It is easier for the outside wheel to turn than it is for the inside wheel. The outside wheel starts to turn faster than the inside wheel.Pinion (11) turns ring gear (16). Ring gear (16) turns case (1). Case (1) turns shaft (14). Shaft (14) turns side gears (4) and (17) through pinions (15). Since it takes more force to turn one side gear than it does the other, pinions (15) turn around shaft (14). As the pinions turn, they move around the side gears. This lets the outside wheel turn faster than the inside wheel.The same amount of torque is sent to both the inside and outside wheels. This torque is only equal to the amount needed to turn the outside wheel.Loss of Traction (Wheel Slippage)
When one wheel has more traction than the other, the operation of the differential is the same as in a turn. The same amount of torque is sent to both wheels. This torque is only equal to the amount needed to turn the wheel with the least resistance.NoSpin Differential
When the speeds of the wheels are the same, the NoSpin differential sends the same amount of torque to each wheel. When the speeds of the wheels are different, the NoSpin differential sends the torque to the wheel that turns slower. A difference in the speeds of the wheels is caused by a turn.The NoSpin differential lets a wheel (axle) turn faster than the speed of the bevel gear by not engaging it with the bevel gear. For example: During a turn with power, the outside wheel (axle) is not engaged with the bevel gear and turns faster while the inside wheel axle is engaged with the bevel gear and turns at the same speed as the bevel gear. The inside wheel gives the power which moves the machine through the turn.Operation
The differential assembly is the same on both sides of the spider. For the purpose of explanation, only the parts of one side of the drive spider and one clutch and cam unit are shown.
SPIDER AND CLUTCH
1. Clutch. 2. Spider. 3. Center cam. 4. Holdout ring. 5. Spider key. 6. Cam. 7. Retainer. A.