Re: Ultramatic will not let go when stopping - 1950

Posted by Mike On 2011/9/15 19:10:08

+1 on tims "don't shift yourself" advice


I've had this issue before on my 50. It was after a rebuild and turned out to be:

1)i had the idle up too high because the engine was running rough.

and

2) the tv linkage was bent and when i fixed it, it was still a bit out of adjustment.


Also, as mentioned, dirty governor, which i believe can be fixed while it's in the car, it's in the side of the rear of the case.

The DD isn't supposed to disengage until i believe about 11 mph, so sometimes i thought it wasn't going to, but it turns out i just wasn't quit stopped yet.

If i were you i would make sure the idle is set properly (i think 450ish rpm, 375 in gear. check the manual), make sure the tv is adjusted properly (pay attention to when it shifts into DD, what mph...if it's too soon or late that's an issue)

Then i'd drain the fluid and put new B&M trickshift original in. I'd drive it up to about 35 and then stop, letting it stall the engine if it had to. Then repeat about 3 or 4 times.


If it still didn't show signs of improvement, i'd look at cleaning the governor, or having it serviced by ross or someone who can pressure test it at the correct ports with gauges.