S spring

[k4029ppy]

Can someone tell me what the function is of the “S” spring inside the differential?

Thank you,

[MOTOWN]

the function of the s spring is to keep the side spider gears in place within the carrier housing, and apply pressure/traction to the wheel with the most traction on a wet/slippery surface hence the term limited slip

[frdwrnch]

This spring loads the posi clutches in the carrier. This resistance against the spider gears makes both axles tend to turn instead of the one axle with least resistance.