On rear axles with a double cardan-style ’shaft, the pinion and driveshaft should ideally be at a 0-degree operating angle at ride height.

In this episode of Restore It, we document the restoration and rebuilding of the differential from the Mercedes W123 2180CE, addressing leaks at the front and rear. Timestamps: 00:00 – Intro 00: ...

Extend driveshaft life, reduce vibration, and improve the ride with a simple pinion angle procedure.

We slid the driveshaft forward to disengage the u-joint from the pinion flange. The driveshaft slip yoke then slid off the transmission's output shaft.

Off Road Truck Axleshaft Facts All About Alloys & Splines, Floaters & Flanges ...

How are roller-pinion drives installed? Some roller pinions have shaft mounts; others have ISO 9409 flange mounts for gearhead mounting. Pinion preloaders improve meshing geometry.