Hydraulic Connecting Rod Bushing from TM

The Cub Club -- Questions and answers to all of your Cub related issues.
Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
lyle11
5+ Years
5+ Years
Posts: 453
Joined: Mon Nov 24, 2014 12:09 am
Zip Code: 44236
Tractors Owned: 48 FCub
55 Lowboy
60 Lowboy
Allis Chalmers B

Hydraulic Connecting Rod Bushing from TM

Postby lyle11 » Sat Jan 09, 2021 11:11 pm

As discussed in previous threads this item has been discontinued by Case IH. I just wanted to pass on that I bought one from TM. It fits perfectly in the Connecting Rod but the ID is too too small for the pin. I didn’t check that the pin inserted before I installed it. I’ll mention it to Ron at TM.

I’m thinking at this point, the couple of bushings I’ve seen in working Cub hydraulics are pretty worn. I’m not a machinist so my tools and skills are limited. I finally got some decent weather to work on this and hate to stop while ordering and waiting for this part to arrive.

Based on me forcing it by tightening the nut, it distorts the bronze material (See the picture below). I’m thinking maybe I should work from one end smoothing the bronze with emery cloth. Then insert the well oiled pin and tighten a little, tap it out and smooth the indentations in the bushing ID with emery cloth and repeat until I get the pin all the way through and rotating freely.

Does anybody have any better idea?

Thanks

C4E696AB-DE70-45DF-8692-11CBC02B9916.jpeg
C4E696AB-DE70-45DF-8692-11CBC02B9916.jpeg (50.91 KiB) Viewed 421 times
Attachments
D4F6E7BC-FA4A-443B-8EC8-93EFFC7F2350.jpeg
D4F6E7BC-FA4A-443B-8EC8-93EFFC7F2350.jpeg (50.91 KiB) Viewed 421 times

User avatar
Glen
10+ Years
10+ Years
Posts: 5352
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: Hydraulic Connecting Rod Bushing from TM

Postby Glen » Sun Jan 10, 2021 12:34 am

Hi,
Some bushings need reaming inside after installing them in the part they go in.
Installing them makes the ID smaller.

I would take the Touch Control, and the pin to an engine rebuilding shop, and ask them to use a reamer in the bushing and make the pin fit.
Hopefully they have a reamer the right size. You could call them on the phone and ask, if you know a good shop.

Below is a page from the Cub service manual, with part of the Touch Control specs.
It says the connecting rod bushing should measure .6868" - .6878" after installing it.
I guess that is the ID, but it doesn't say. I don't have one out to measure.

http://www.farmallcub.info/manuals/gss- ... 008-03.jpg

I oil the bushing some with motor oil, about when greasing the 2 fittings on the rockshaft.
But oil might not get in it the way it is made, the 2 rockshaft brackets fit against the ends of the bushing, I think.
It might help keep it from wearing. :)
Last edited by Glen on Sun Jan 10, 2021 1:43 am, edited 1 time in total.

tst
10+ Years
10+ Years
Posts: 4594
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: Hydraulic Connecting Rod Bushing from TM

Postby tst » Sun Jan 10, 2021 12:59 am

ream it or a ball hone is probably about $15 for that size

Gary Dotson
Team Cub Mentor
Team Cub Mentor
Posts: 4861
Joined: Thu Aug 03, 2006 6:20 am
Zip Code: 43358
Tractors Owned: 48 Cub Diesel (Cubota)
53 Cockshutt 20 restored (Shooter)
52 Cockshutt 20 unrestored
47 Leader "B" (Herckie)
49 Leader "D" (Princess)
49 Leader "D" very rough
48 Leader "D" unrestored
Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D
Circle of Safety: Y
Location: OH West Mansfield

Re: Hydraulic Connecting Rod Bushing from TM

Postby Gary Dotson » Sun Jan 10, 2021 8:23 am

Don't force the pin into the bushing, it needs to be a slip fit, otherwise the bushing is meaningless. Ream it, hone it or whatever to make it a good fit.

lyle11
5+ Years
5+ Years
Posts: 453
Joined: Mon Nov 24, 2014 12:09 am
Zip Code: 44236
Tractors Owned: 48 FCub
55 Lowboy
60 Lowboy
Allis Chalmers B

Re: Hydraulic Connecting Rod Bushing from TM

Postby lyle11 » Sun Jan 10, 2021 9:37 am

Thanks for the replies. So, are you saying that any bushing I buy in this application mostly likely will need to be reamed or honed because installing it distorts it? I’m asking because buying a hone or reamer is gonna cost about the same as another bushing. The only other Cub bushings I replaced were the clutch pilot and the PTO bushing and they did not need to be reamed. I’m guessing it’s because they are in a blind hole and the fit didn’t need to be as tight.

tst
10+ Years
10+ Years
Posts: 4594
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: Hydraulic Connecting Rod Bushing from TM

Postby tst » Sun Jan 10, 2021 9:58 am

most bushings that are pressed into a hole will "shrink" some and almost always need to be sized

lyle11
5+ Years
5+ Years
Posts: 453
Joined: Mon Nov 24, 2014 12:09 am
Zip Code: 44236
Tractors Owned: 48 FCub
55 Lowboy
60 Lowboy
Allis Chalmers B

Re: Hydraulic Connecting Rod Bushing from TM

Postby lyle11 » Sun Jan 10, 2021 10:03 am

It looks like Tim’s ball hone suggestion is the best way for me to proceed. The pin is 11/16”. On McMaster-Carr it recommends using the larger size ball hone if there is not an exact match. They have 5/8” and 3/4” so it looks like I need a 3/4” and you run it in the bushing until it meets the specs and you have a good fit with the pin.

One more question. Price goes up as grit of the hone gets finer. They have 120,180,240,320. Which do you recommend for this application? I’d prefer to buy only 1 hone even if it takes longer.

Thanks

tst
10+ Years
10+ Years
Posts: 4594
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: Hydraulic Connecting Rod Bushing from TM

Postby tst » Sun Jan 10, 2021 10:06 am

120 or 180, make sure to oil it or the hone wears fast or clogs the stones, even a local parts store may have them maybe, I buy many from ebay where some are moving old stock out that did not sell when they are cheap

lyle11
5+ Years
5+ Years
Posts: 453
Joined: Mon Nov 24, 2014 12:09 am
Zip Code: 44236
Tractors Owned: 48 FCub
55 Lowboy
60 Lowboy
Allis Chalmers B

Re: Hydraulic Connecting Rod Bushing from TM

Postby lyle11 » Sun Jan 10, 2021 10:11 am

Thanks Tim. Looks like for $20 I can order a 180 grit from NAPA and pick it up at the store.
Do I need to buy special hone oil or will cutting oil like used with a tap or some other oil work?

Thanks

User avatar
tnestell
10+ Years
10+ Years
Posts: 560
Joined: Mon Feb 03, 2003 2:01 am
Zip Code: 48609
Circle of Safety: Y
Location: Mi, Saginaw

Re: Hydraulic Connecting Rod Bushing from TM

Postby tnestell » Sun Jan 10, 2021 11:41 am

Glen wrote:

Below is a page from the Cub service manual, with part of the Touch Control specs.
It says the connecting rod bushing should measure .6868" - .6878" after installing it.
I guess that is the ID, but it doesn't say. I don't have one out to measure.
)


An 11/16th drill is 0.6875" don't know if you would want to try that.

tst
10+ Years
10+ Years
Posts: 4594
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: Hydraulic Connecting Rod Bushing from TM

Postby tst » Sun Jan 10, 2021 12:41 pm

no special oil, just lighter stuff to keep it wet

lyle11
5+ Years
5+ Years
Posts: 453
Joined: Mon Nov 24, 2014 12:09 am
Zip Code: 44236
Tractors Owned: 48 FCub
55 Lowboy
60 Lowboy
Allis Chalmers B

Re: Hydraulic Connecting Rod Bushing from TM

Postby lyle11 » Sun Jan 10, 2021 1:41 pm

Thanks Tim. One less item to buy and probably never use again.

I did look at Menards last night for an 11/16” bit but they don’t carry that size. I suspect it would be hard to drill through the bushing cleanly then I’d still have to hone it. I’m gonna call Napa tomorrow and order the hone for store pickup. I have confidence that I can get it in spec using the hone.

tst
10+ Years
10+ Years
Posts: 4594
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: Hydraulic Connecting Rod Bushing from TM

Postby tst » Sun Jan 10, 2021 6:32 pm

I have found many of these with the bolt frozen in the bushing or torn up from lack of lube, some I have added a grease fitting to it

User avatar
Glen
10+ Years
10+ Years
Posts: 5352
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: Hydraulic Connecting Rod Bushing from TM

Postby Glen » Sun Jan 10, 2021 7:40 pm

lyle11 wrote:Thanks for the replies. So, are you saying that any bushing I buy in this application mostly likely will need to be reamed or honed because installing it distorts it? I’m asking because buying a hone or reamer is gonna cost about the same as another bushing. The only other Cub bushings I replaced were the clutch pilot and the PTO bushing and they did not need to be reamed. I’m guessing it’s because they are in a blind hole and the fit didn’t need to be as tight.


Hi,
The ID of bushings should always be checked after driving them in the hole.
Many people on here have had problems with the ID of the clutch pilot bushing in the crankshaft hole being too small after replacing it. They put the Cub together, and the clutch shaft won't stop turning, so the transmission grinds trying to shift into gear.

People have had to split the Cub again and ream the bushing.
You were lucky your new bushing worked right without checking the ID or reaming it.
There are sizes for it in the Cub service manual, and it gives a running clearance.

I haven't read on here that people needed to ream the PTO pilot bushing.

It's not likely you could buy another bushing from the same source and it would work any different than the one you have, but hard to say, if you were there where they are stored, you could measure the ID of them. :)

JoeB
10+ Years
10+ Years
Posts: 253
Joined: Fri Apr 03, 2009 11:37 pm
Zip Code: 35650
eBay ID: retrocrop
Tractors Owned: Acres of Red Tractors.
Location: Moulton, Alabama (NW AL)

Re: Hydraulic Connecting Rod Bushing from TM

Postby JoeB » Mon Jan 11, 2021 12:24 pm

A small brake cylinder hone may work on this if you can find one. Some auto parts stores carry them. I use one in the shop often for doing things like this.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 2 guests