A flanged bushing should have a 1 / 8 to 3 / 8-in. gap between its flange and the pulley hub. The absence of this gap indicates either an undersize shaft or oversize bushing bore.

The more modern manuals like the T-56 six-speed input shaft is longer and will project past the bellhousing flange ¾- to 1.0-inch. If you think about this, it becomes obvious which pilot bushing ...

Now engineers have an alternative—flange couplings, which have been developed and refined by engineers at Ringfeder Power Transmission GMBH to use a mechanical shrink fit around the shafts.

Shaft ends can be a plain tube, have two slots for bayonet-style torque transmission (right), a flange with four threaded holes in an axial direction, or a flange with four radial threaded holes.

Ford has revealed that more than 41,000 F-250 and F-350 models sold in the United States have a rear axle shaft that could be ... axle shaft is prone to fracturing roughly 44 mm from the flange.