I finished putting my second M50D hybrid together.
I used a M50D-R1HD 4x4 for the housing and output shaft and a 2.3 2wd M50D-R1 for the gears, input, and countershaft. I also replaced all the synchros, tapered roller, and ball bearings as well as the seals and shifter bushings.
The first Hybrid trans I threw together was just to see if it was even possible, so I didnt replace anything but one bearing that I messed up taking it apart. I have been running that trans for over a year no with no issues. But the synchro for first gear is worn and the input bearing is a little noisy since I didnt replace them while it was apart. Not to mention I rebuilt it on my tailgate which was nowhere near as clean of an environment as I should have built a trans in.lol
I also came to the conclusion that the only thing special about the HD trans is the extra bellhousing bolt hole for the SOHC and the speed sensor on the tailhousing, which are both worthless to me.lol
I started by pulling the tail housing and top cover off.
Then I bolted the trans to the table and pushed both shift collars down to engage it in two gears at once and lock it up.
With the trans bolted down and locked up I broke the nuts loose on the output shaft and countershaft. And pulled everything for 5th and reverse out. I was careful to take out the whole shift shaft and fork together this time so the detent didnt pop out.
Next thing to do was take off the front cover, and midbearing retaining plate. Then work out the countershaft bearings and input/output shaft races. The countershaft bearing MUST come out in order for the countershaft to drop low enough to allow for the input shaft to be worked out of the front hole.
Then I lifted out the outputshaft and countershaft. To get bearing midway up the shaft to let loose and allow for the gears and synchros I simply stood the shaft up on end and lightly tapped it against a sold table and the weight from the gears above pushed the bearing right off with not heat needed. same went foe getting the bearing off the input shaft.
I fully disassembled both trannies, and then to clean up my work area and reduce the confusion I assembled the 2.3 trans with the 4.0 guts.
I slid all the 2.3 gears and new sychros and bearings on the 4x4 shaft and reassembled the 4.0 trans. I made sure I lubed all the needlebearings and synchros with ATF when I put it together to eliminate a dry start.
Alot of headache could be avioded if I started with a 4x4 2.3 or 3.0 trans and didnt need to do synchros. The shafts would be the same, so it would just be a matter of swapping the whole assembly, but 2wd 2.3 5 spds and everywhere and cheap.lol
Here is comparison of the 2wd and 4x4 output shafts
4x4 is the top one, notice it is shorter and smaller in diameter since it doesnt have to support a slip yoke.
I got in a hurry and quit taking pictures towards the end.lol
I will be picking up my new LUK clutch soon and swapping out trannies soon.
Here is a little teaser pic of the D44 with some old 35's thrown on the new rims. I ordered my EB coils today. 7" coils from BC Broncos. With my bumper, and Supercab, I figure I will end up with around 9-10 inches above stock. I plan to push the axle forward a little so tires will clear by a mile. (maybe enough room to clear 37's some day.haha)