Q.
Does only the front existing bushing need to be removed? A. Yes
But if there was a Okie bushing sleeve previously install.
You will have to remove the entire Okie bushing sleeve. Sometimes they are in the torque tube pretty tight.
Q.
Is there enough room for the new bushing to be installed without removing the rear seal/bushing?A. Yes, the Okie bushing sleeve will stop just ahead of the old rear bushing/seal.
The Okie bushing sleeve rear bushing/seal will now ride on a previously unused location along the front end of the propeller shaft.
Okie Bushing Sleeve Assembly instructions I could not open the GM film.Try the below link. I had no problem with the
GM film strip slides link, you might have to give it a little time to load.
https://www.flickr.com/photos/advance-design_parts_co/sets/72157639879860375The GM slides show how the GM mechanic would have replace the original equipment bushings and oil seal.
It was a big job because they removed the torque tube and propeller shaft, to get at the bushings and oil seal.
Okie Bushing HistoryThe Okie bushing was created by the long gone National Machine Works Inc in Oklahoma, hence the name Okie.
It shortened the time and effort to repair the torque tube bushings and oil seal.
If you did it the way GM did it, you would remove the entire torque tube from the rear axle housing.
Remove ring & pinion gears.
Pull out the driveshaft from the torque tube.
Use special tools to remove and replace the bushings and oil seal.
Then reassemble everything. Pain in the Butt.
With the Okie bushing you just pull out the front bushing.
Then from the front of the torque tube you push in the Okie bushing sleeve, which has the Front bushing,
Rear bushing & Oil seal inside the sleeve. Less Work.