Re: Ultramatic will not let go when stopping - 1950

Posted by BH On 2011/9/16 9:17:50

I've never found a good description for that procedure, in-car, for the original Ultramatic.

Howver, the governor is described beginning on page 17 of the Ultramatic Drive Serviceman's Training Book - with image of the assembly on page 18.

Have you downloaded the 1948-1954 Packard Parts List (parts book)? Plate No. 141 shows a basic explosion of the case. Governor cover is on the right rear, ahead of the rear extension (tailshaft) housing - held on by six screws. Details of the governor are shown in Plate 149. Application listing for the governor and details begin with Gr. 3.632 in the "Clutch & Transmission" section.

Once disassembled, cleaning the governor parts is covered in SC Vol. 24, No. 5, but SC Vol. 24, No. 10 cautions that wire brushes should NOT be used. Be sure to review other bulletins on the governor and compare to what's in your car.

Fluid capacity on the Ultra, including converter, is 12 quarts. It's been years since I had the pan off an Ultramtic, without draining the converter, but I'm guessing you'll need at least 4-5 quarts.

Perhaps others who have done this work can offer additional insight.