GM 8691936 Transmission Asm,Auto (Remanufactured)

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Overhauling a manual transmission is a difficult job for the do-it-yourselfer, involving the disassembly and reassembly of many small parts. Numerous clearances must be precisely measured and, if necessary, changed with select fit spacers and snap-rings. If transmission problems arise, it can be removed and installed by a competent do-it-yourselfer, but overhaul should be left to a transmission repair shop. Rebuilt transmissions may be available -check with your dealer parts department and auto parts stores. The time and money involved in an overhaul is almost sure to exceed the cost of a rebuilt unit. However, it's not impossible for an inexperienced mechanic to rebuild a transmission if the special tools are available and the job is done in a deliberate step-by-step manner so nothing is overlooked. The tools necessary for an overhaul include internal and external snap-ring pliers, a bearing puller, a slide hammer, a set of pin punches, a dial indicator and possibly, a hydraulic press. A large, sturdy workbench and a vise or transmission stand will also be required. During disassembly of the transmission, make careful notes of how each piece comes off, where it fits in relation to other pieces and what holds it in place. This will make it much easier to get the transmission back together. Before taking the transmission apart for repair, it will help if you have some idea what area of the transmission is malfunctioning. Certain problems can be closely tied to specific areas in the transmission, which can make component examination and replacement easier.

After securing the transmission in place, you should reinstall the dipstick tube, starter motor, vacuum hose(s) (if equipped), shift and TV linkage or cable, wire harness connectors, torque converter cover, driveshaft(s), speedometer cable, and exhaust system components.

Drain the transmission lubricant and remove the driveshaft(s), making sure to cover the transmission end to prevent fluid loss and contamination. If the vehicle has 4WD, remove the transfer case, and if necessary, remove any parking brake assembly components that obstruct access. Remove exhaust system components for clearance.