Brake Rod Too Short

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DRaymond
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Brake Rod Too Short

Postby DRaymond » Thu Apr 20, 2017 9:15 pm

I am beginning the reassembly of my 48 Cub. I installed new brake pad assemblies (Early serial number so the brake pads are part of an assembly). Pictures attached.

The left brake rod end does not reach.

The pedals are locked together.

The right brake rod end fits into the clevis with a 1/2" penetration .

I test pulled on each rod to see if I could pull any slack but they were snug. I anticipate having some brake drag when I first drive the tractor. My thoughts at this point are to leave the right rod adjustment alone but make a clevis extension for the left and use until the shoes wear in enough to remove the extension.

Any thoughts would be welcome.
Attachments
Right Rod End.jpg
Left Rod End
Matched Pedals.jpg
Pedals Matched
Left Rod End.jpg
Right Rod End
DT Raymond
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Re: Brake Rod Too Short

Postby staninlowerAL » Thu Apr 20, 2017 9:27 pm

Possibly a coupling nut and a short all thread bolt to make up the difference. If you can't find a coupling nut of the correct thread type it might be possible to rethread one to the correct thread with a bolt tap. "Farmer Fix" :lol:

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Re: Brake Rod Too Short

Postby Glen » Thu Apr 20, 2017 10:19 pm

Hi,
I would measure the length of the new rods, and the length of the old rods, and see what they are. They might attach onto the band in a little different place, since they are probably made by different companies. You could measure the length of the 2 new rods also.
I guess you can use an extension, like Stan said, or return them and buy some somewhere else, TM Tractor has them, I don't know if that is where you bought them. :)

http://www.tmtractor.com/new/br/288fp.htm

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Re: Brake Rod Too Short

Postby Crimson Tim » Fri Apr 21, 2017 1:41 am

And everything at the rear assembled correctly when you put the finals back on? So the rod attachment to the band looks the same on both sides?

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Re: Brake Rod Too Short

Postby ScottyD'sdad » Fri Apr 21, 2017 7:23 am

Crimson Tim wrote:And everything at the rear assembled correctly when you put the finals back on? So the rod attachment to the band looks the same on both sides?

That was going to be my suggestion, assembly error.
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Re: Brake Rod Too Short

Postby tst » Fri Apr 21, 2017 7:34 am

I had some brake bands from A&I that were short also

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Re: Brake Rod Too Short

Postby Gary Dotson » Fri Apr 21, 2017 7:50 am

With a couple nuts (or a coupling nut) and a couple pieces of flat steel, you could make an extended length clevis for your break-in period. All parts are not created equal.

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Re: Brake Rod Too Short

Postby Stanton » Fri Apr 21, 2017 8:45 am

If I remember right, the new brake pads are only 1/4" thick. Even after a break-in period, there wouldn't be enough slop to get that rod into the clevis.

Previous suggestions; good advice. Let us know what you discover or do. We're interested.
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DRaymond
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Re: Brake Rod Too Short

Postby DRaymond » Fri Apr 21, 2017 10:43 am

The brake lining sets were purchased from Steiner Tractor Parts. As to assembly, I thought that I was very careful about re-assembly, but hey, anything is possible, I will check rod length and assembly. One thing I just remembered. I had to replace the RH Brake Shaft Assy (the side that fit)-maybe the index is off with the left? I will check and see if the holes for the clevises are in the same relative position as the original on the left. Thanks all for the feedback. I will let you know what I have to do.
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Re: Brake Rod Too Short

Postby Crimson Tim » Fri Apr 21, 2017 10:58 am

Are these the same rods going back on that came off, or are these different rods going on?
If new rods, I would check rod length.
If old rods, I would think you would notice the short rod on disassembly, as it couldn't have had too many threads engaged.
The bands themselves are new, right? Did the new ones match?

I think I have heard Dale talk about reinstallation of a reluctant final, and the reason was the pin that holds the brake band was a bit out of alignment, so it didn't seat with its hole in the final. If that pin fell completely out of place in a way to pull the band deeper in, that would "shorten" the rod, but I think you would be able to tell that one side wasn't like the other just by looking where the rod enters the axle?

One way or another, the source of the discrepancy should be pretty obvious once you find it. It's just the finding it part that can be frustrating!

Edit: just saw your post about the other assembly you replaced. That's a logical source for the problem. If that's all it is, and everything is else is correct, then either fab your extension or modify (or exchange?) the rh assembly, and you're good to go.

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Tractors Owned: 1948 FCub 13747 "Marie"
1948 FCub 16109 "Lizzie"
1948 FCub 44181 "Gussie"
Cub-54A Leveling & Grader Blade
Cub-22 Mower
Cub-193 Moldboard Plow

Re: Brake Rod Too Short

Postby DRaymond » Fri Apr 21, 2017 12:49 pm

Thanks Tim. The brake assemblies have the rods integral to the shoe mounting plates for the model 48 I am working on (SNs 501 to 173600 found in Group 4, p1, ref 3--upper left of page). I had held them up to the old assembly's prior to install but nothing caught my eye indicating a difference however it is obviously something weird going on. They also were also very snug installing them into the axle housings. I will use all of the suggestions and let you all know what I find.

Brake Shoe Assembly.JPG
DT Raymond
Spokane, WA


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