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Grinding in first gear

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bgrif
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Grinding in first gear

Postby bgrif » Mon Aug 21, 2017 8:16 pm

Got a question. After finally restoring my 1947 Farmall Cub (minus the belly mower), I decided it was time to replace the fluids, so I replaced the fluid in my transmission. I drained the old and replaced it with new. I added 90wt as recommended. Now, when I put it in first gear, their is kind of a grinding noise when I release the clutch and begin to move (maybe better described as a very fast clicking noise). I feel the grinding in the shifter. There is the normal noise in the other gears like I have always had, but I don't get the grind noise in any other gear. This started happening after I replaced the oil, and drove around for 5 minutes, it wasn't immediate. Any thoughts on what is wrong, or things I could look at or do to figure it out.

Cub1.jpg
Cub.jpg
Cub2.jpg

Thanks again for any help

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tst
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Re: Grinding in first gear

Postby tst » Mon Aug 21, 2017 8:27 pm

pull the shifter and check for broken/cracked/ loose shift fork, make sure clutch is releasing when pedal is depressed and in correct adjustment

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Glen
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Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
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Location: Wa.

Re: Grinding in first gear

Postby Glen » Mon Aug 21, 2017 9:14 pm

Hi,
Below is a post from few days ago, read the 2 posts I made there. It tells how to adjust the shifter forks, and has a pic of under the shifter cover. You might be feeling the vibration in the lever because the fork bolt is loose, and the fork has turned, and is rubbing on the clutch shaft.
The 1st 4 paragraphs of my 1st post there tell about it. :)

viewtopic.php?f=1&t=97779

The fork could be broken too.

inairam
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Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
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Location: Glen Mills PA

Re: Grinding in first gear

Postby inairam » Tue Aug 22, 2017 8:03 am

do you throttle down and wait a bit before putting in gear
When you only have 9 horsepower you need to know the names of all of the ponies!

Matt Kirsch
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Re: Grinding in first gear

Postby Matt Kirsch » Tue Aug 22, 2017 8:15 am

Is it coming from the transmission or the clutch? If the clutch, it is likely the pressure plate fingers hitting the throwout bearing due to the fingers being adjusted too low. The fact that it happened when you changed the oil is just coincidence.


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