Transmission Preference and Advice

[dvdriz]

I recently put a transmission assembly from a Allis 312 into my 3314 V tractor due to badly worn shifter and input shaft. I have been doing some thinking lately if I should consider taking the old differential, hubs, and axle out of my original 3314 transmission and install them on the unit from the 312? Just curious what you all would do. Is there any advantage to make the switch as I mentioned above or will there not be any noticeable improvement? From what I have read the limited slip may be improved but I am unsure.

[rokon2813]

I'm not positive, but I think the only difference would be the traction control. And if that is all your looking for, There are easier ways that going to all the trouble of changing out those parts. I know Rod, (HubbardRA) has posted several times how to add tension to the newer style diff. By the way, if both the old and new style are set to factory specs, I doubt you'll notice any difference at all.

[HubbardRA]

Dan, I be to differ with you on this one. I can completely change the diff and axle without disassembling the diff. To shim the springs in the limited slip unit requires complete disassembly of the diff, and with the shims in place it is more difficult to get the diff back together. I can say for a fact, and you have witnessed it (The shimmed diff is in my 61 Wards Squire), that a shimmed limited slip pulls like a locked diff but turns like an open diff. All I did on mine was to place a standard washer from a hardware store between each spring and the diff housing to compress the spring a little more which will increase the friction between the spider gears and the diff housing. It doesn't take much since this added friction is multiplied by 8, since there are 8 of these springs in the diff.

[rokon2813]

My mistake Rod, I thought when you pulled the axle, the gears inside would drop out of place, but I never tried it. Or is that only if you pull the tube?? Broken tubes were the only reason I ever had to pull one apart. [:0]

[callwill]

The planetary differential can be taken off in one piece without the gears all falling out.

[HubbardRA]

Dan, The gears are mounted on the long bolts. As long as you don't pull the long bolts out of the two piece housing, the gears will stay in place and aligned. As I said, if the nuts are behind the mounting flange toward the tranny, you can pull the diff with the bolts in place and not drop any of the gears out. I know, I have taken a couple apart, and then had to put all of the pieces back together again. You have to do this if you shim one.

[rokon2813]

Ahh, a little mis-communication. He mentioned changing hubs and axle. I was refering to the large main gear inside the rear end, but like I said later, if you dont pull the axle tube it shouldn't matter.