ford 2n transmission

Anonymous-0

Well-known Member
Well we pulled the 2n apart yesterday because it was growling when driven. I found a chiped tooth in the sherman step-up drive and some spawling on the bearings in the transmission. I have a bearing and seal kit on order. It looks like the bearings have to be pressed on and off the shafts? Is this correct and has anybody been thru this before? Also, the 2nd and 3rd gears have about a 2-3 inch span of corrosion on them when the tractor sat for a while. Will this smooth itself out? It is not terrible but it seems impossible to find new gears. Does anyone know where to find replacement gears?
 
I haven't done tranny work (yet), but I have done axle and differential bearings in my 1949 Jeep (not the 8N--yet). So my comment below may not reflect the actual arrangement of 8n bearings.

A press and a bearing separator/puller are incredibly useful in getting bearings on/off the shafts. I don't think you can do it without the separator/puller. (Depending on the arrangement, sometimes you need the puller, and other times, you can put it in the press to push the bearings off--that's much nicer, IMHO.) You probably don't need the press--you can use a dead blow hammer. (Don't pound on the bearing you're installing--use the old bearing or something of an appropriate size in between.) But a press makes it soooo much easier.

-Paul
 
For internal races weld a bead around the interior and when it cools the shrink will make them loose - they just about fall out.

I cut the cage, pull the balls or rollers out of the way, and then split the race with a Dremel tool or grinder razor blade to free them from the shaft.

To install just warm the bearings up in an old toaster oven. I laid them on a kerosene heater I was using and dropped them in place. A press is useful too, just use the old races that were welded or split to push on the new races.

See John Smith's site for tips on installing bearings too. I think that is where I got the toaster over idea.

Check the running torque per the manual by wrapping the shaft with a cord and pulling on a fish scale. One has to do a little math to calculate the radius for the torque measurement.
 
Okay, so when I said you need a puller to get the bearings off, I guess I should have added "in one piece"! :lol:

If you have to play with shims, you may need to pull a good bearing once or twice... (I know I did.)

The toaster oven is a nice idea. I even have a toaster oven in my garage--bought for my daughter to bake polymer modelling clay. Since it's not used for food, I shouldn't have any problem using it for heating bearings. (My Jeep project is far from finished...)

I use a beam-type inch-pound torque wrench for checking running torque.

-Paul
 
(quoted from post at 11:00:50 10/11/13) Well we pulled the 2n apart yesterday because it was growling when driven. I found a chiped tooth in the sherman step-up drive and some spawling on the bearings in the transmission. I have a bearing and seal kit on order. It looks like the bearings have to be pressed on and off the shafts? Is this correct and has anybody been thru this before? Also, the 2nd and 3rd gears have about a 2-3 inch span of corrosion on them when the tractor sat for a while. Will this smooth itself out? It is not terrible but it seems impossible to find new gears. Does anyone know where to find replacement gears?

AKAIK short of having them madde you cannot get new gears for the 9N/2N transmssion. John Smith usually has a good assortment of used gearing but it's hit or miss finding the specific gears you need. Obviously the ones that fail more often are scarcer.

A press or puller is the easiest way to remove old bearings from a shaft. If the bearing is pressed up against a wide shoulder you may need a bearing separator to get behind it. You can install new bearings by heating them in an oven IF they are not sealed and/or lubricated. If they are you need a good (e.g pricey) bearing heater or a press. Overheating a radial ball bearing or applying excessively heavy loads to the outer race are both good ways to shorten it's life....

TOH
 
(quoted from post at 19:00:50 10/11/13) Well we pulled the 2n apart yesterday because it was growling when driven. I found a chiped tooth in the sherman step-up drive and some spawling on the bearings in the transmission. I have a bearing and seal kit on order. It looks like the bearings have to be pressed on and off the shafts? Is this correct and has anybody been thru this before? Also, the 2nd and 3rd gears have about a 2-3 inch span of corrosion on them when the tractor sat for a while. Will this smooth itself out? It is not terrible but it seems impossible to find new gears. Does anyone know where to find replacement gears?

Nuttin to it,, as far as the rust on the gears clean'em up and run'em...
 

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