Hydro leak

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Joined
Mar 26, 2021
Messages
1,036
Location
LaPorte IN 46350
Uh-oh, my turn to learn about my hydro unit. Time to get out the power washer and head to the FAQ section and chase this thing down!
28062.jpeg
 
Joined
Mar 31, 2012
Messages
4,243
displayname
David Schwandt
Just HOPE that some one DID NOT use bolts for that homemade hitch plate that are TOO LONG!!

If they did, you are probably threaded, as the bosses in the casting will have been broken out or at the very least cracked
 

JPrattico

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Joined
Dec 8, 2020
Messages
300
Location
New York
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Cubcadet_107
if I had to guess I'd say its the dreaded cork gasket that seals the hydro unit to the axle. Common leak point, gonna have to replace it on my 107 soon.
 
Joined
Mar 31, 2012
Messages
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displayname
David Schwandt
😲 Whaaaaat? That things been on there since I bought it around 10+ years or better,never leaked a drop. Something to look at though,thanks Dave.

OK, then, wash and dry the area thoroughly.
Douse the area w/baby powder and the leaking fluid will leave a trail in the powder and lead you right to the leak.

I surely did not wish a heart attack on you Bob!
Thought this Cub may have been a new acquisition is all.
Just the first thought to cross my mind as well
I agree, the cork gasket would be the 1st place to suspect.
 
Joined
Mar 26, 2021
Messages
1,036
Location
LaPorte IN 46350
OK, then, wash and dry the area thoroughly.
Douse the area w/baby powder and the leaking fluid will leave a trail in the powder and lead you right to the leak.

I surely did not wish a heart attack on you Bob!
Thought this Cub may have been a new acquisition is all.
Just the first thought to cross my mind as well
I agree, the cork gasket would be the 1st place to suspect.
Will do...thats a great idea with that baby powder!
 

lelder

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Joined
Mar 6, 2003
Messages
40
Location
Poland Ohio
displayname
Larry Elder
Question for experts, I have to replace gasket on my 129 , need to verify bolts to remove and shoulld I use any sealer ?
 

1811Cub

Well-known member
Joined
Jul 13, 2020
Messages
415
Location
Elkland, PA
Cleanliness is utmost importance. No dirt to enter transaxle. I use a bit of Hi-tack to retain cork gasket to diff, then carefully set the Sunstrand hydro on the diff unit and then tighten bolts. Some visual aid:


 

1811Cub

Well-known member
Joined
Jul 13, 2020
Messages
415
Location
Elkland, PA
Apparently, I bought an older or aftermarket cork gasket. It did not have any adhesive on it.
 
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