NO 48's right final

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NO 48's right final

Postby 64/67lo-boy » Mon Dec 17, 2012 2:03 pm

I removed the right final off (as of now it will be refered to as number 48, for the year it was serialised) #48 to inspect why the brake had so much slack in it. This is what I found.

IMGP0746.JPG
after The brake drun was slid off axle


IMGP0747.JPG
Looks like there is the remains of a bushing


IMGP0748.JPG
Final has differnt casting date than 1948 must have been replaced. I dont think that the brake band is for the older cubs.
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Re: NO 48's right final

Postby Bob McCarty » Mon Dec 17, 2012 2:17 pm

Here's a picture from TM Tractor. Looks like you need to replace yours. The brake drum has a key and set screw to hold it in place, no bushing.
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Re: NO 48's right final

Postby 64/67lo-boy » Mon Dec 17, 2012 2:29 pm

Now that i ve looked around a little I think the brake band is the right one for a early cub. It has the rod attached to the lining.
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Re: NO 48's right final

Postby Barnyard » Mon Dec 17, 2012 2:40 pm

64/67lo-boy wrote:
Final has differnt casting date than 1948 must have been replaced. I dont think that the brake band is for the older cubs.

R is the casting code for a '48.
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Re: NO 48's right final

Postby lazyuniondriver » Mon Dec 17, 2012 2:42 pm

I'm wondering if once upon a time, the axle surface beneath the brake drum was destroyed by a loose drum and some lathe handiwork was performed to dress it up requiring the use of a bushing for the drum to fit the re-worked shaft.
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Re: NO 48's right final

Postby 64/67lo-boy » Mon Dec 17, 2012 2:58 pm

You are so right barnyard. R is on all the other casting dates except the left final.

The axle shaft seems to be the same diameter and the only area that seems polished is the area that the drum sets on. Can any one tell me if that is saposed to be a larger diameter than the center portion of the axle sheft?

IMGP0755.JPG
Left final casting date
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Re: NO 48's right final

Postby lazyuniondriver » Mon Dec 17, 2012 7:00 pm

Looking at your picture of the drum which appears to have a bushing installed in it compared to the TM picture of a new drum and the TM axle shaft pictured below, I would have to change my original question about a previous axle shaft repair to question whether there was a previous brake drum repair.

Is there any key way remaining in your brake drum?
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Re: NO 48's right final

Postby Buzzard Wing » Mon Dec 17, 2012 7:20 pm

Without a good view of that shaft, I would think a replacement may be a good idea (I would think except for shipping it shouldn't be too pricey). While you have the final off, probably be worthwhile to clean it up and check the bearings.

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Re: NO 48's right final

Postby Scrivet » Mon Dec 17, 2012 7:21 pm

This thread from a couple years ago when I did one may help it has a couple pictures.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=52074&hilit=Brakes
Trying to remember and looking at the pictures, I think the spot where the drum rides is just a little bigger and machined not rough cast than the shaft and then there's a step that the drum pushes/seats against and the oil seal rides on that largest step.

I ended up just replacing the drum and everything was fine. The drum is a lot softer than the axle and most all of my wear was in the drum. Make sure you use the correct size woodruff key and a good or new lockbolt and jam nut when putting it back together.
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Re: NO 48's right final

Postby 64/67lo-boy » Mon Dec 17, 2012 8:06 pm

Scrivet that link is just about what happend. half moon still in slot, brake band squezed drum and drum slid up on shaft. Old drum had material taken out of center and split bushing installed. No way that set up was going to stop the tractor. The split bushing would just alow the drum to stop and the axle and bushing would keep on spinning.
Pete from Virginia Beach


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