Getting ready to mount the 144 Cub universal mounting frame

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Getting ready to mount the 144 Cub universal mounting frame

Postby SundaySailor » Mon Mar 09, 2015 1:04 pm

It will not be long before I'm ready to mount my newly purchased Cub 144 universal mounting frame. I have now done a test fit, ground down the high spots, pre-set the lift arms, and I'm now waiting for the primer coat to cure so I can paint.

At the bottom of the bolster are two holes for some kind of bolts on my Cub. (Standard Cub just in case). Once the square piece of the left side of the universal frame goes into the square hole, I'm supposed to lock it in place with two bolts and I think two locking nuts.

Does anyone know the bolts I'm talking about? I need the size, length, grade 5 or 8 or whatever. I tried to look on TM's website, but haven't found anything there. Doing a search here turns up the bolts for mounting the steering bolster.

Also, can anyone give me any hints of what to watch out for - any gotcha's I need to be aware of in mounting this frame? I'm planning on using regular run of the mill standards/cultivator feet in two pairs.

Thanks in advance.

SS
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Bill Hudson » Mon Mar 09, 2015 1:26 pm

In terms of gotchas, do not use bolts for tightening the cross piece in the bolster. Use set screws with a lock nut. Why, because the bolts, over time, will mushroom and will be next to impossible to get out. There are ways to do it, however, using set screws virtually eliminates the problem.

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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Criswell » Mon Mar 09, 2015 2:08 pm

Originally they were 5/8-11 by 1 1/2" Heat-Treated hex head machine bolts, part number 511 961 R2. The reason they specified "Heat-Treated" was so they did not mushroom as was mentioned above. Set screws work very well as that is what they are designed to do, when getting the nut to lock/tighten the bolt in place be sure to get jam nuts and not full size nuts. The extra room afforded by the thinner jam nut makes getting a wrench on it a lot easier.
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Don McCombs » Mon Mar 09, 2015 3:24 pm

Bill Hudson wrote:Use set screws with a lock nut.

Specifically, a square head, dog point set screw. 5/8-11 X 2".

http://www.mcmaster.com/#91418a802/=w8ktgt
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby SundaySailor » Tue Mar 10, 2015 8:12 am

Thanks folks! This will help a lot.

I was thinking either 1/2" or possibly 5/8", but with the eyes being what they are these days, I can get things mixed up really easy.

I'll get right on this.

SS
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby ShakerPrairie » Tue Mar 10, 2015 8:18 am

Don is there an advantage to the dog point/dog tooth bolt? I used square head cup point set screws.

When we got the Cub someone had used regular bolts and they had mushroomed. I backed them out as far as I could, then cut them off and cut a slot in the ends with a sawsall.
I was able to screw them in with a large screwdriver until they unthreaded out of the hole inside of the bolster.

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Don McCombs
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Don McCombs » Tue Mar 10, 2015 8:32 am

Either dog point or cup point will work.
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby bythepond88 » Tue Mar 10, 2015 11:40 am

What is the advantage of the square head? Is it that a square head is less likely to round off than a hex?
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Don McCombs » Tue Mar 10, 2015 12:06 pm

Not sure that I have ever seen a hex head set screw. But, the important feature is the cup or dog point. Don't use a plain hex head bolt.
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Criswell » Tue Mar 10, 2015 12:21 pm

Don McCombs wrote:But, the important feature is the cup or dog point.



The important feature is that it should be, and is hardened. A non-hardened point or cup will flatten-out and mushroom.
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Winfield Dave » Tue Mar 10, 2015 1:25 pm

Criswell wrote:Originally they were 5/8-11 by 1 1/2" Heat-Treated hex head machine bolts, part number 511 961 R2. The reason they specified "Heat-Treated" was so they did not mushroom as was mentioned above.
Criswell wrote:The important feature is that it should be, and is hardened.

I am having trouble finding where this is specified in the parts manual.
Please identify.
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby tmays » Tue Mar 10, 2015 1:46 pm

They were cap head screws with special point per parts manual I have. Probably NLA, so the best and easiest to acquire would be set screws as mentioned
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Criswell » Tue Mar 10, 2015 2:09 pm

Here is a link to two of the manual pages from Rudi's website:

http://www.cleancomputes.com/Cub/Cub%20 ... e%2034.jpg

http://www.cleancomputes.com/Cub/Cub%20 ... e%2006.jpg

Both links are from the CBI-2A Revision 1 Parts Catalog. The first is from the cultivator list, page 34 (36 in the original catalog). The second is from the Blades parts list. They are listed as going with the Upper Gang Beam Bracket (511 944 R12). In the Blade link, part number 5 is the Axel Hanger Bolt Spacer, 651 237 R2 and directly under that is the number for the bolts, 511 961 R2 and listing that 2 are required.
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Jim Becker » Wed Mar 11, 2015 6:58 pm


Clip
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Re: Getting ready to mount the 144 Cub universal mounting fr

Postby Clip » Thu Mar 12, 2015 4:14 am

Can someone post a picture of the area concerned? I've got to set up my 144 soon for the first time and would like to confirm I've got the right hardware in the right places. Thanks!


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