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Reload this Page Cub Cadet 126 clutch brake and transmission issues
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  #1  
Old 06-11-2020, 03:13 PM
LikeOldStuff LikeOldStuff is offline
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Default Cub Cadet 126 clutch brake and transmission issues
I purchased a 1972 cub cadet 126 a few months ago. I have mowed a small yard 7 or 8 times. the second time I mowed I stepped on the clutch/brake pedal and the brakes wouldn't do anything and the clutch wouldn't engage to changes gears - I had to turn the tractor off with the key - but When I started back up everything was fine and working as it should. Now just today when I was finishing mowing I clutched to switch from 1st to Reverse and the tractor wouldn't move after it was in R. I tried 1st again and still no movement I tried 2nd and 3rd and the tractor would very slowly move inches - I had a friend push me and after a little pushing the tractor moves again, but each gear seems just a little slower and now engine seems to run a little rougher ---I wasn't really paying much attention but in hindsight now I think the clutch has been harder to push all the way in to engage the lock mechanism the last 4 or 5 times I have driven her - Any thoughts ? thanks for your help
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Old 06-17-2020, 12:39 PM
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I haven't been in the same location as this tractor since this issue happened - but I was just trying to think of some things to check.

Wondering if the brakes could be sticking, maybe when the person pushed me it loosened them enough but still sticking enough to make each gear seem slower and the engine is rougher because it is under load ?

Could it be something with the clutch disc ? Saw a video where a kid sprayed the crap out of the clutch assembly with something (WD40 ?) to cure a no movement condition - although mine seemed to be working well for a while so I'm not confident this is the same issue

Its not a hydro so I don't think low fluid would be the issue ?
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Old 06-17-2020, 01:49 PM
R Bedell R Bedell is offline
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Does your tractor have the internal wet brake or the external Disc Brakes ??

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Old 06-17-2020, 05:18 PM
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I'm not sure but I think all 126 had the car like disc brakes on the back wheels -- I can double check but in my minds eye I think I see the external discs on my tractor
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Old 06-17-2020, 05:24 PM
R Bedell R Bedell is offline
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Quote:
but I think all 126 had the car like disc brakes on the back wheels
Not so, that is why I asked.
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Old 06-17-2020, 06:45 PM
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cooperino cooperino is offline
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Im thinking loose or broken fork holder in top of trans. Does the shifter feel funny? Like it moves in your hand but maybe not moving anything in trans?
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Old 06-17-2020, 09:46 PM
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In addition to Roland and Cooper's questions, I wonder if the engine is bogging down when you release the clutch? Also, are you grinding gears when shifting with the clutch pedal pressed down?

I would also look and see if the rear pin on back end of driveshaft is still intact.
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Old 06-17-2020, 10:36 PM
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ok, I stopped by the tractor in the dark with a flashlight and tried to contort myself to see the disc brakes while depressing the clutch/brake. I can't be 100% certain (dang bifocals) but I don't think the brake calipers were moving with the clutch ---so I am thinking they are stuck in a mostly closed position - which would explain why the person pushing me was able to get me moving and why each gear seems slower, because the brakes are slightly grabbing.
Are there any good videos or instructions on repairing these disc brakes ? I think I saw a video of brake repair on a 1450 - Roland do you know if that is the same brake design on the 126 ? even though those 2 tractors are probably 10 or 15 years apart in age

Thanks Cooperino for the suggestion - but the tractor seems to go in gear well each time
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Old 06-18-2020, 12:02 AM
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Billy O
there were 2 or 3 times (not recently) when the gears would grind when I tried to change gears - and I remember being surprised because I knew the first part of the pedal depression was for the clutch and the bottom part for the break - so I remember thinking how can this be happening when the pedal is pressed so far down - But 80% of the time she shifts and goes into gear pretty nice
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Old 06-18-2020, 06:45 AM
R Bedell R Bedell is offline
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Now that we have established you have Disc Brakes, then this is simple. Pressure is applied to the Pads via a "cam" that is being pulled by some linkage. That linkage is connected to the Pedal. I am thinking that something is rusted or froze up. Using some PB Blaster on the moving points will probably do wonders.
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