| Re: 700R4-4L60 Build Up Part 4 |
Subject: Re: 700R4-4L60 Build Up Part 4 by PeteK on 2009/9/9 21:00:04 While I wait for my used pump core to arrive, I can rebuild some of the other parts. Tha aux valve body is small, and easy. It is used to cushion the blow to the driveline when shifting to drive, or when banging gears back and forth between reverse and drive, such as when stuck in the snow or mud. Basically, another accumulator in the trans. In mid 87, GM used a cast iron end cover, instead of the typical aluminum. I had one laying around, so I will use it on the 1990 aux valve body. Photo below shows the difference.  The next pic shows the completely disassembled aux vb. I always replace the accumulator piston and seal, as they tend to wear in the center hole.  The aux valve body is spitshined in and out, new piston installed, and reassembled.  |
