| Re: Trans shifting problems revisited |
Subject: Re: Trans shifting problems revisited by PeteK on 2012/5/20 19:41:30 The 1-2 accumulator is the cushion (or shock absorber) for the 1-2 shift. The aux valve body's job it to provide shock absorption of the park to drive shift, park to reverse shift, or drive to reverse shift. Although I have never seen an aux valve body bore worn, it is worth inspecting. It is more common for trans builders to reuse a worn accumulator piston. This is a bad idea, as the center hole that rides up and down the hardened steel guide rod wears out the pistons.If the pistons are dated, replace them. Replacements are not date stamped. I still think your problem is in the main valve body. If none of the above solves it, I would gravitate towards the input shaft teflon seals as being a strong possibility. Especially if the builder used the scarf cut type seals. |
