Reaction Carrier Pinion End Play

IMPORTANT: End play specifications are the same for both the 4-pinion reaction carrier (651) and the 5-pinion reaction carrier (651A).

Using a feeler gage, measure the pinion washer wear.

Fig 1: Checking Reaction Carrier Pinion End Play With Feeler Gage

Courtesy of GENERAL MOTORS CORP.

End Play Specifications: The correct end play is between 0.228-0.610 mm (0.009-0.024 in).