STAKING THE BAND ANCHOR PLUG 2ND BULLETIN-'NEW DESIGN'

BEGINNING IN MID-JUNE, 1981, ALL THM 125 AND 125C TRANSMISSIONS WERE ASSEMBLED WITH A NEW DESIGN BAND ANCHOR PLUG. THE NEW DESIGN BAND ANCHOR PLUG HAS A TAB WHICH HOLDS THE PART IN PLACE. SEE FIGURE 1. SERVICE INFORMATION 1.TRANSMISSIONS BUILT WITH THE PAST DESIGN BAND ANCHOR PLUG REQUIRED A STAKING OPERATION TO HOLD THE PART IN PLACE. SEE FIGURE 2. THIS STAKING OPERATION IS NOT REQUIRED WITH THE NEW DESIGN BAND ANCHOR PLUG AS IT IS HELD IN PLACE BY THE REVERSE OIL PIPE. SEE FIGURE 3. 2.TO REMOVE OR REPLACE THE NEW DESIGN BAND ANCHOR PLUG, THE REVERSE OIL PIPE MUST BE REMOVED. 3.FOR SERVICE, USE THE NEW DESIGN BAND ANCHOR PLUG PART NUMBER 8637640. SERVICE INFORMATION: 1.FIND A SOCKET WITH AN O.D. APPROXIMATELY THE SAME SIZE AS THE BAND ANCHOR PLUG BORE (19.00 MM). 2.USING THE SOCKET, A SHORT SOCKET EXTENSION, AND A HAMMER REMOVE THE STAKE BY DRIVING THE SOCKET INTO THE BAND ANCHOR PLUG BORE. SEE FIGURE 1. 3.ANY ALUMINUM CHIPS REMOVED BY THIS OPERATION SHOULD FALL INTO THE BAND ANCHOR PLUG. 4.REMOVE THE BAND ANCHOR PLUG AND CLEAN OUT ANY ALUMINUM CHIPS CONTAINED IN IT OR THE SURROUNDING AREA. 5.WHEN INSTALLING THE BAND ANCHOR PLUG IN ANY THM 125 TRANSMISSION, USE A PUNCH AND STAKE THE BAND ANCHOR PLUG IN ITS BORE. SEE FIGURE 2.

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.