Re: Twin Ultramatic Shifting

Posted by Randy Berger On 2008/5/20 1:43:39

It sounds like a sticking valve in the valve body. When was the last time you changed fluid? If you have a torque wrench that will read the small torque settings on the valve body bolts, then drop the valve body down, disassemble it and clean all the bores with a long brass bristle brush (I use gun cleaning brushes), measure all the springs comparing them with the values in the shop manual. Assemble it carefully and bolt it back up using the torque specs in the manual - DO NOT OVERRTIGHTEN. Starting in Drive right is different than starting in drive left. Study the pressure charts - it may provide a clue where to look closely.