Modifying the drift

Fig 1: Grinding Drift Specs

Courtesy of VOLVO CARS OF NORTH AMERICA.

Grind a drift as shown in the illustration. This is to facilitate removing the constant velocity joints

The rounding at the lower edge (R) means that the drift will not catch in the circlip groove on the drive shaft. The slightly sharper angle (approximately 60°) means that the drift has a greater mating surface against the inner ring.