Modifying Gears for Taller Overdrive
Disassembly













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Transmission disassembly process
















Here is a simplified diagram of the transmission, and a photo of the junkyard transmission before disassembly:

transaxle.simple.diagram.jpg

transaxle.outside.04.jpg


Removing the black end cover gives easy access to fifth gear, even when the transmission is installed in the vehicle:

transaxle.minus.cover.02.jpg


If the transmission is out of the vehicle, a bit more work reveals the rest of the gears, and the two main shafts can be removed:

transaxle.minus.half.of.case.01.jpg

transaxle.shafts.w-gears.01.jpg


After the two shafts are removed from the case, it takes a big press and a lot more work to remove the bearings and gears from the shafts:

transaxle.input.shaft.disassembled.jpg

transaxle.output.shaft.disassembled.jpg


After all that work, the only parts I need from the junkyard transmission are from second gear. Note that the smaller diameter gear is one solid piece with the input shaft, so I cut it off the shaft before taking the pieces to the machine shop:

orig.2nd.output.gear.01.jpg

orig.2nd.input.gear.03.jpg


See link above "Machine Shop Work" for a description of the machine shop work. If you find my web site worthwhile, please link to it from your web site.

- Tom Leone TGLEONE AT GMAIL DOT COM
















Last modified: June 28, 2006