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Transmission Grinding

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k hutchins
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Tractors Owned: 1948 Farmall Cub
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Original manuals for all the above
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Re: Transmission Grinding

Postby k hutchins » Thu Jun 07, 2018 9:48 am

With all of your description and the pictures, my money if l were a betting man is that you need a new throw out bearing. Before you get too far, pull the access cover and take a look. If the carbon if flush with the metal, it's time for a new one.
Why is there never enough time to do the job right, but always enough time to do it over. :?:

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Cubfriend
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Tractors Owned: 1948 Cub, Kittie; 1948 Cub, Harold; 1949 Cub, 49er; 1951 Cub, Tucker; 1951 Cub, Homely; 1956 Cub High Crop; 1957 Cub Loboy; 57 Cub Loboy w/fasthitch + 194 plow; 1958 Cub LoBoy w/FH, Popeye; 1961 Cub, Beater; #1-1962 Cub Loboy Dually (Originally Orange) w/Foot Throttle; #2-1962 Cub Loboy Dually (Originally Orange) w/Foot throttle; Yellow 1963 Cub Loboy and blade; 1970 Cub, Cubbie; and 5 other Cubs in various stages of disaasembly and disrepair; 1962 Cub Cadet Original; 2 other Cub Cadet Originals; Cub Cadet 100; Cub Cadet 124 w/Creeper; Cub Cadet 147; 2 Cub Cadet 129's; Cub Cadet 149; 1948 Allis Chalmers C w/single frontwheel; 1944 Farmall H w/Tokhiem Cab; 2 One Point Fasthitch Carriers; 2-#100 Fasthitch Rear Blade; 2 Sets Cub 144 Cultivators; 2 Sets Cub #252 Cultivators; 3 Cub #193 Mouldboard Plows; 1 Cub #193 Slatted Plow; 1 1948 Cub-54 Snow Plow; 3 Cub-54 49-5 Snow Plows; Cub #6 Tool Bar w/Disc Blades & Middlebuster. 2-#105 sickle mowers, #152 disc plow
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Location: Grand Island, Nebraska

Re: Transmission Grinding

Postby Cubfriend » Thu Jun 07, 2018 9:52 am

Another cause for gears grinding is the transmission shaft pilot bushing in the crankshaft. If your pilot bushing has been replaced lately this could be the problem if the clearance was not checked between pilot shaft and bushing. Sometimes installing the bushing will make the I.D. too small for correct clearance.
Frank

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Boss Hog
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Re: Transmission Grinding

Postby Boss Hog » Thu Jun 07, 2018 7:24 pm

A little tip do not replace the pilot bushing unless it is badly worn. they seldom wear out. you may need to adjust the clutch fingers
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Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg

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HiltzMachineWorks
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2018 Cub Cadet XT1 GT54
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Re: Transmission Grinding

Postby HiltzMachineWorks » Fri Jun 08, 2018 3:42 pm

I'm waiting until Monday for my new tires to be mounted and then I can test the adjustment I made. I'm also going to look up into that throwout bearing tonight when I get home from work. I'll take a picture.

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HiltzMachineWorks
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2018 Cub Cadet XT1 GT54
Location: Aroostook County, Maine
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Re: Transmission Grinding

Postby HiltzMachineWorks » Sat Jun 09, 2018 7:13 pm

Here is what I can see when looking in the hole under the tractor.....

IMG_0563.jpg

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Slim140
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Re: Transmission Grinding

Postby Slim140 » Sat Jun 09, 2018 8:02 pm

Your throwout bearing looks good. Hopefully you can adjust the pedal and fix it. If not then your clutch disc may be worn. Your fingers on your pressure plate are almost all way out, you can see the studs with the nuts.
Every home is a school, what are you teaching?

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Glen
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Re: Transmission Grinding

Postby Glen » Sat Jun 09, 2018 8:25 pm

Hi,
The throwout bearing material looks good in your pic.
The pressure plate fingers look low, measure them, and raise them up if needed. They have to be the right height so the clutch will release.

The guys on here say the height should be 1 1/4" measured from the 2 places shown in the pic below.
The 3 fingers need to be exactly the same height, so it makes a flat surface for the throwout bearing to push on.
The fingers can be adjusted through the hand hole. You need a good light for that.
The fingers are set with the pressure plate assembled on the flywheel, not off, like the pic shows.
Below is a post showing how to adjust the finger height. You have to make the tool shown in it.
Dale Finch has said that it is easier to adjust them if you loosen the free play adjustment bolt, at the clutch pedal base, and move the throwout bearing as far to the rear as it will go. This gives you more room to work.
Set the free play correctly when you are done setting the finger height.

viewtopic.php?f=141&t=66543

If you make the tool shown there in the post, and it is easier to measure the finger height.

The screws I can see in your pic, with the lock nuts, should turn in enough to raise the fingers some.

Grease the throwout bearing grease fitting while you are under the Cub. The originals had a small hole on top for excess grease to come out.
Attachments
Cub clutch 3.jpg

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Boss Hog
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Re: Transmission Grinding

Postby Boss Hog » Sun Jun 10, 2018 8:43 am

Adjust the fingers on the pp and you will be good to go as I posted earlier before the pics
Boss
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg


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