[kweeksdraw]

My tractor is a 1951 8N (Sn 432525). I am now working to put the axles back in place with new seals. Trouble is, there doesn't appear to be anywhere for them to seat. No milling in the housings, no milling on the axles. The only picture I have of the area is of the axle end with the bearing. What should I be seeing in the "trumpets" for the seals to fit into?

Thanks, guys.

 

[JohnW]

I made a trip to the garage to get picutres for you. None of the parts have been cleaned up yet, sorry about that but you can see the seals and sealing surface. The first is of the axle seal surface, next the seal in the trumpet and last is the bulge that can be seen when looking at the outside of the trumpet.

Hope these help.

 

[souNdguy]

keep in mind that only late 8n's have the inner and outter axle seals..

soundguy

 

[JohnW]

Keep in mind that even though your engine has a 51' serial number the rear castings my have been changed at some point. You might want to check the casting dates on your tumpets.

Mine is a 50' s/n 323257 and all the castings dates are within a month or so of each other and as you can see it has the seals.

 

[kweeksdraw]

Thanks guys. Those pictures show me that I have the earlier set-up. You might find it amusing to note that the PO had a set of inner seals just rolling around on the axles.

Thanks again.

 

[souNdguy]

Thanks guys. Those pictures show me that I have the earlier set-up. You might find it amusing to note that the PO had a set of inner seals just rolling around on the axles.

Thanks again.

yep.. no place in the trumpet for them to seat... wonder what they were thinking when thy pushed them up in there?

soundguy

 

[kweeksdraw]

yep.. no place in the trumpet for them to seat... wonder what they were thinking when thy pushed them up in there?

soundguy

Ya gotta wonder, don't ya?

So what is the procedure, if you have the correct set-up for putting in the inner seals? Mount them on the axles first and press both into the trumpet, or into the trumpet first and press in the axle. I would guess the axles first?

I've been held up by the threat of rain, so not much work has been going on. Do you guys notice how the bolts look just fine when you take them off, and really crumby when you go to put them back on?

 

[JohnW]

Ya gotta wonder, don't ya?

So what is the procedure, if you have the correct set-up for putting in the inner seals? Mount them on the axles first and press both into the trumpet, or into the trumpet first and press in the axle. I would guess the axles first?

The seals are seated in the trumpets first...

 

[souNdguy]

The seals are seated in the trumpets first...

ditto that for sure!

soundguy

 

[figgskzoo]

Re: Inner axle seal question (and outer seal, too)

Noob here - patience appreciated while I learn correct etiquette for this particular forum.

Great info in this thread on axle seals - thanks.

So, where do the 'outer' seals go? Somewhere very near to the hub, I presume.

Do the 'inner' seals go near the diff end of the trumpet, or near the hub end of the trumpet?

I'm about to do the hub replacement procedure on my '51 8N s/n 434,xxx and I'm not sure if I'll need both sets of seals or where each set goes.

Where are the casting dates located on the trumpets, and what is the cutoff date for needing / not needing the inner seals?

Thanks in advance!

 

[figgskzoo]

forgot to ask:

How is the axle retained in the diff / trumpet? Is it a 'C'-clip on the diff end of the axle or some mechanism on the hub end?

Thanks!

 

[figgskzoo]

forgot to ask:

How is the axle retained in the diff / trumpet? Is it a 'C'-clip on the diff end of the axle or some mechanism on the hub end?

Thanks!

n/m, I think I can determine that, by the direction of the cone bearing on the hub end of the axle, that the axle is thereby retained within the trumpet. That bearing is then pre-loaded by the axle nut outside the hub, thus holding the axle firmly in place on its outer and, and it is stabilized at the inner end by the differential side gear. Therefore, the axle can only be removed by removing the trumpet, correct? Furthermore, the inner axle oil seal (if my trumpet casting in fact contains one) cannot be replaced without removing the trumpet and axle, right?

Thx

 

[souNdguy]

should be able to pul the axle once the bearing carrier is free.

sn 486754+ should have both I would think

soundguy

n/m, I think I can determine that, by the direction of the cone bearing on the hub end of the axle, that the axle is thereby retained within the trumpet. That bearing is then pre-loaded by the axle nut outside the hub, thus holding the axle firmly in place on its outer and, and it is stabilized at the inner end by the differential side gear. Therefore, the axle can only be removed by removing the trumpet, correct? Furthermore, the inner axle oil seal (if my trumpet casting in fact contains one) cannot be replaced without removing the trumpet and axle, right?

Thx

 

[kweeksdraw]

The serial number on my tractor indicates 1951, but the date on the trumpets, the same on both, is 1948. I'm getting the feeling that the "It was my Pappy's tractor..." story was a bunch of hooey!

 

[figgskzoo]

-bearing carrier- does that contain the axle bearing outer race and is behind (inside of) the brake backing plate?

should be able to pul the axle once the bearing carrier is free.

sn 486754+ should have both I would think

soundguy