Overrun Clutch Piston Travel Check

Fig 1: Checking Overrun Clutch Piston Travel

Courtesy of GENERAL MOTORS CORP.

Using a feeler gage, measure the piston travel between the overrun clutch backing plate (510) and the overrun clutch backing plate retainer ring (511).

Piston Travel Specification:  Piston travel should be 0.838-2.38 mm (0.033-0.094 in).