7.5 INCH REAR PINION BEARING REMOVER TOOL

A LARGER DIAMETER REAR PINION BEARING WAS PHASED INTO PRODUCTION IN LATE 1980 REQUIRING THE USE OF A DIFFERENT PINION BEARING REMOVER. THE TOOL J-21493-01 SHOWN ON PAGE 4B-15 OF THE 1981 SERVICE MANUAL IS FOR THE SMALLER DIAMETER REAR PINION BEARING. THE TOOL REQUIRED FOR REMOVING THE LARGER DIAMETER PINION BEARING IS J-22912-01, THIS TOOL WAS PREVIOUSLY RELEASED AS ESSENTIAL. AXLE ASSEMBLIES BUILT WITH THE LARGER DIAMETER PINION BEARING ARE IDENTIFIED BY AN UPSIDE DOWN LETTER A OR B CAST INTO THE UPPER FORWARD SIDE OF THE CARRIER HOUSING ASSEMBLY.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.