FixVault

Pinion Clearance Check: Notes

Connect 12-volt battery leads to solenoid "S" switch and to ground. Flash a jumper lead from "MOT" or "M" terminal to starter frame, shifting pinion into cranking position until battery is disconnected. Push pinion away from stop retainer as far as possible. Using feeler gauge, check for 0.010 - 0.140" clearance between pinion and retainer. See  Fig 1 . 

NOTE: Pinion clearance is not adjustable. If clearance is not within specifications, motor must be disassembled and checked for defects.
Fig 1: Checking Pinion End Play
G09358651Courtesy of GENERAL MOTORS COMPANY