Mopar Four Speed Transmission Rebuild - Four Gear Freshen

Everything goes into the case in the reverse order it came out. Set the cluster into the bottom of the case, put the main shaft in, making sure it engages the input, and then lift the cluster into place and finally slip in the countershaft. Don't forget the key before you tap the shaft in flush with the case.

Now you can rotate and bolt the tailhousing in place and drop in the shift forks. Did you remember the new tailhousing gasket before you assembled everything?

Generously squirt everything with gear lube. Move the sliders back and forth in order to get some oil under them as well. Also lube up the input bearing before you bolt on the bearing retainer. Rotate the shaft a few times, engaging each of the gears, including reverse, to make sure everything is working smoothly.

The only thing left is to install the side cover and reverse detent assembly.

There you have it-all ready to go into your car.