Paul
The reason you have to drop the drive shaft is because the input from the driveshaft does not spin the cluster gear.
Which in turn, splashes lube, all over the inside of the tranny.
Had a Jeep that I was moving, do that to me years ago because I did not isolate the tranny.
No wreck, but when the output bearing seized up, I left some some interesting tire tracks down the interstate.

Volfandt
You do know that a Super duty is a Ford, don't you?
I have a Stovebolt license plate on the rear of mine.

Don

Last edited by 2-Ton; 08/07/2017 4:46 AM.
1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!