Transmission shifting question

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

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.
User avatar
Urbish
501 Club
501 Club
Posts: 1098
Joined: Sat Sep 07, 2013 3:45 pm
Zip Code: 48158
Tractors Owned: ~
1948 Farmall Cub
1947 Farmall H
1946 Farmall B
1953 Willys CJ3B
Circle of Safety: Y
Location: Manchester, MI

Re: Transmission shifting question

Postby Urbish » Wed Mar 29, 2017 11:40 am

The manual for the 1947 shows the yoke in the upper hole. I believe a nut and bolt are supposed to be through the bottom hole. If the nut and bolt are missing, the two halves of the yoke can spread apart and the throw out bearing can become disengaged from the yoke. This may be part of your issue.
Attachments
Cub Clutch.JPG

rstoots
Cub Star
Cub Star
Posts: 99
Joined: Sun Mar 05, 2017 3:18 pm
Zip Code: 22406
Tractors Owned: 1949
1955

Re: Transmission shifting question

Postby rstoots » Wed Mar 29, 2017 5:11 pm

Put it back together as in picture. Clutch rod adjustment was as far as it could go. Checked pressure plate by depressing clutch pedal, all looked OK. Started up with tractor in neutral and clutch depressed, pressure plate was spinning. Is it supposed to be spinning. Noticed in the parts manual that SN 501-32228 was different than 32229-up. What was difference in rods? Is it posible that the wrong rod is in it?

User avatar
Glen
5+ Years
5+ Years
Posts: 1964
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: Transmission shifting question

Postby Glen » Wed Mar 29, 2017 5:55 pm

Hi,
The pressure plate is bolted to the flywheel and spins with it. When someone pushes the clutch pedal down with the engine running, if you are looking in through the clutch housing hole, the clutch shaft to the transmission should stop turning, and the thin clutch disc should stop turning, it is attached to the shaft with a spline.
Here is a page from the Cub parts manual showing the clutch parts. The rod on the 1st style linkage has threads and an adjustable yoke on the front end of the rod.
The newer style rod has no adjustment, both ends are solid on the rod.
Here are pics from TM Tractor. :)

http://www.farmallcub.info/manuals/cub_ ... 007-04.jpg

http://www.tmtractor.com/tm-tractor/gcl/rod1_001.htm

http://www.tmtractor.com/tm-tractor/gcl/rod2_001.htm

rstoots
Cub Star
Cub Star
Posts: 99
Joined: Sun Mar 05, 2017 3:18 pm
Zip Code: 22406
Tractors Owned: 1949
1955

Re: Transmission shifting question

Postby rstoots » Wed Mar 29, 2017 7:31 pm

Thank you Glenn, I should have realized that. I will check again tomorrow to see if shaft and disc are turning.

rstoots
Cub Star
Cub Star
Posts: 99
Joined: Sun Mar 05, 2017 3:18 pm
Zip Code: 22406
Tractors Owned: 1949
1955

Re: Transmission shifting question

Postby rstoots » Sat Apr 01, 2017 3:53 pm

I just realized that I may have been turning the PTO with the PTO lever in the wrong position so I am going to do it again before splitting. Stupid Huh

User avatar
Glen
5+ Years
5+ Years
Posts: 1964
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: Transmission shifting question

Postby Glen » Sat Apr 01, 2017 4:34 pm

Hi,
You haven't said lately what you are doing, if you are turning the PTO with a motor, like was said on page 2 of this post, and want to turn the shaft up to the pilot bushing, then you need to have the PTO engaged, the PTO lever to the rear. :)

rstoots
Cub Star
Cub Star
Posts: 99
Joined: Sun Mar 05, 2017 3:18 pm
Zip Code: 22406
Tractors Owned: 1949
1955

Re: Transmission shifting question

Postby rstoots » Sun Apr 02, 2017 2:54 pm

Going to turn it with a motor. I had it in neutral and clutch depressed and shaft was turning and pressure plate was still. Pilot bushing.

rstoots
Cub Star
Cub Star
Posts: 99
Joined: Sun Mar 05, 2017 3:18 pm
Zip Code: 22406
Tractors Owned: 1949
1955

Re: Transmission shifting question

Postby rstoots » Fri Apr 14, 2017 10:05 am

Turned it with motor for more than 8 hours, still have shifting problem however I have a new symptom, when I depress the clutch with engine running I get a really loud noise. I assume I have totally damage pilot or something else. Will split and check all components. It will be a while so I will post my results when I get into it.

User avatar
Urbish
501 Club
501 Club
Posts: 1098
Joined: Sat Sep 07, 2013 3:45 pm
Zip Code: 48158
Tractors Owned: ~
1948 Farmall Cub
1947 Farmall H
1946 Farmall B
1953 Willys CJ3B
Circle of Safety: Y
Location: Manchester, MI

Re: Transmission shifting question

Postby Urbish » Fri Apr 14, 2017 10:35 am

Thanks for the update. Let us know what you find. Might want to have a new graphite throwout bearing on hand, soaking in cheap grease, before you split it.

rstoots
Cub Star
Cub Star
Posts: 99
Joined: Sun Mar 05, 2017 3:18 pm
Zip Code: 22406
Tractors Owned: 1949
1955

Re: Transmission shifting question

Postby rstoots » Fri Apr 14, 2017 12:06 pm

Is there any way the gear clashing could be a transmission issue? Want to rule all out before splitting.

User avatar
Urbish
501 Club
501 Club
Posts: 1098
Joined: Sat Sep 07, 2013 3:45 pm
Zip Code: 48158
Tractors Owned: ~
1948 Farmall Cub
1947 Farmall H
1946 Farmall B
1953 Willys CJ3B
Circle of Safety: Y
Location: Manchester, MI

Re: Transmission shifting question

Postby Urbish » Fri Apr 14, 2017 3:41 pm

The gears should come to a complete stop when you push in the clutch. If they're not spinning, they won't clash. Something is keeping them in motion. It seems that you've narrowed it down to the pilot bushing ID being too small.

User avatar
Glen
5+ Years
5+ Years
Posts: 1964
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: Transmission shifting question

Postby Glen » Fri Apr 14, 2017 5:38 pm

Hi,
There could be no damage, it might just be the pilot bushing is dry of grease. Be sure to grease it and the end of the shaft when putting it together, after you ream it out some, if that is what you are going to do.
Here is a page from the Cub service manual showing the size of the end of the clutch shaft, and the running clearance for the bushing. Measure the shaft end, it should be smooth, and then ream the bushing so it is .004 - .006 inch bigger than the shaft, like the page says. :)

http://www.farmallcub.info/manuals/gss- ... 005-02.jpg

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 12803
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Transmission shifting question

Postby Don McCombs » Fri Apr 14, 2017 6:39 pm

rstoots wrote:Turned it with motor for more than 8 hours, still have shifting problem however I have a new symptom, when I depress the clutch with engine running I get a really loud noise. I assume I have totally damage pilot or something else. Will split and check all components. It will be a while so I will post my results when I get into it.

What kind of noise? Grinding, screeching, squealing, clacking, growling?
Don McCombs
MD, Deep Creek Lake

Image
Proud Member of Maryland Chapter 39

Scrivet
5+ Years
5+ Years
Posts: 2533
Joined: Sun Apr 19, 2009 9:51 pm
Zip Code: 63664
Location: MO, Potosi

Re: Transmission shifting question

Postby Scrivet » Fri Apr 14, 2017 8:15 pm

Don McCombs wrote:
rstoots wrote:...... I get a really loud noise. ........

What kind of noise? Grinding, screeching, squealing, clacking, growling?
I can't see that question without thinking of poor ole Charlie!
"What kind of noise?" question is at 7:30.
https://www.youtube.com/watch?v=6Z7u3ZuP6nk

User avatar
Dale Finch
5+ Years
5+ Years
Posts: 2595
Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '55 Cub "Bertha"
'55 Cub "Ben"
'55 Cub "Bailey"
'56 Cub "Boris"
'48 Super A "Bubba"
Circle of Safety: Y
Location: NC, Chapel Hill

Re: Transmission shifting question

Postby Dale Finch » Fri Apr 14, 2017 8:32 pm

You might need to adjust the free play of the pedal. If it is misadjusted, it can push the TOB hanger assembly too far forward, causing it to hit th finger adjustment nuts. You can look up through the clutch housing hand hole, while pulling down on the clutch pedal to see if it is going further forward than those nuts...with the engine shut down!

Good luck!


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 2 guests