My wifes 90 estate wagon just toasted its 200 4R. Its whole drivetrain was from an 84. I'm gonna put the 90 200 4R back in it. It worked good before, but I took it out cause I couldn't get it to quit leaking. I bought my front and rear seals from GM this time. However, I suspect that it may be leaking from the input shaft cover. (is that what its called?) What can I expect when I unbolt this thing? Is something going to go sproinggggggggg!?!? I've heard this thing needs removed with a puller or slide hammer, anyone know? Doe's it have a torque spec? Basically, I need someone knowledgeable with automatics to give me the whole lowdown on this. The book showed a gasket and a big O ring as necessary for this to seal. I got them, I just need to do this right. Many thanks for any input.
If you're really unsure about doing this, take the stuff to a local tranny shop and have them put the gasket and seal in. If you want to attempt this yourself, here are a few pointers. First, you'll need to remove the pan. This is so that you can pull out the filter and remove the TCC solenoid that is stuck up in the front pump. For that, remove the two 10-mm bolts and pull it straight out. Now, remove the pump bolts. In lieu of a pump puller, you can gently pry the pump loose from underneath with a large, flat blade screwdriver. Remove the old paper gasket from the pump/case. If any sticks, be sure to remove it entirely. Swap your new o-ring onto the perimeter of the pump. Get some petroleum jelly and stick the new paper gasket to the case. Also, you'll want to stick the plastic thrust washer onto the back of the pump so that it stays secure during reassembly. Lube the outer o-ring and place the pump back in the case. Use a long phillips head screw driver or two to line up the pump holes with the case and push the pump back into place. Tighten the bolts 15-20 ft.-lbs. At this point, turn the input shaft by hand to make sure nothing is bound up. Replace the TCC solenoid and tighten those bolts to 7 ft.-lbs. Pop in a new filter & pan gasket and button her up.
Greg, Everything came apart just as you described. No problems. Assembly will be in a few days due to more parts needed. The stationary part of the input shaft (stator?) is wore out. The teeth are 3/4 way gone. I pulled the 84 200 4R outta her car and this same part was completely stripped. Musta been why it quit working. I guess this is a common problem with the 200 4R?!.
