Re: Torque Converter Removal

Posted by Scott On 2019/11/25 22:18:41

Okay, I think I'm making a bit more sense out of the service bulletin. So the 55 and early 56 pumps and shafts were 20 tooth splines from the factory and the DDC got oil via the tooth gaps, but with the May 56 publication of the bulletin service replacement parts were made for the transmissions up to that point that added 20 more splines in the gaps. The replacement shaft and pump required the holes drilled into the shaft (why the replacement shaft didn't come with them I don't understand). Mine is configured this way. Late 56 didn't need the holes drilled because the oil pump assembly was changed again to inject the oil at the rear of the pump into the shaft end. (Why the service pump body wasn't this way is a mystery.)

I can assume the service parts were installed since the shaft holes were drilled. The original 20 spline pump rotors can't be there and all the 40 spline rotors are the same.

The pump body could be original, in which case there would be no path for the DDC oil. If it is the service body or a late 56 body, it should work unless the drilled holes would be a leak path for the late 56 body.

So the only possible configuration that could be blocking passage in this case is that the service shaft and rotor were installed without the service body, is that correct? That seems implausible that only two of the three service parts were installed from the kit.

Is there anything else that could be blocking the passage?