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Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

hydrolic leak on lo boy cub

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TEXAN Connection

06-05-2014 18:42:03
65.111.51.146



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1964 Lo boy ,,,,Im loosing hyd fluid, and its filling up the space between the motor and transmission then it all leaks out of the case when i park it on a incline, or when it just gets to full. what is the fix for this? and does the tractor have to be split?




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mkirsch

06-06-2014 13:13:40
65.199.189.6



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-05-2014 18:42:03  
Part of your problem is, the transmission capacity is 3-1/2 PINTS.

You're way over full. No wonder it's leaking like a sieve :)



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Albert Patty

06-06-2014 14:06:53
65.111.51.146



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 Re: hydrolic leak on lo boy cub in reply to mkirsch, 06-06-2014 13:13:40  
Ill check, it was a while back and i put what the specs called for . was leaking B-4 that and why I checked everything.



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mkirsch

06-06-2014 04:56:04
65.199.189.6



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-05-2014 18:42:03  
For hydraulic oil to be getting in the "torque tube" (that section between the engine and transmission), the hydraulic pump has to be leaking into the engine, and the rear main seal has to be leaking like a sieve.

It's time for some detective work to see what's going on:

How do you know it's hydraulic oil? Are you refilling the touch control constantly?

What seal did you replace? The rear main seal on the engine? Did you use the stock seal in the stock retainer?

The stock seal fits too loose in the stock retainer, and will leak like a sieve. So if you've got a leaky hydraulic pump too, the oil will do an "end around" through the engine and end up in the torque tube.

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TEXAN Connection

06-06-2014 12:26:32
65.111.51.146



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 Re: hydrolic leak on lo boy cub in reply to mkirsch, 06-06-2014 04:56:04  
was able to get the stock seal to seal on the rear engine seal. (yes I know of the rear engine seal deli-ma) "torgue tube" thats the word Im looking for thank you. Im pretty convinced now its the 2 problems. hyd oil leaking into the crankcase, refilling hyd every 6 hrs or so. (Crank case always over full) and trans fluid leaking into the torque tube. Ordered the new Hyd rebuild kit today, will have to see about the trans seal next.

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john *.?-!.* cub owner

06-05-2014 20:31:25
174.125.0.179



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-05-2014 18:42:03  
There is no opening in the torque tube to allow the touch control fluid into that housing even if the TC unit is leaking. Your fluid is coming from the transmission input shaft seal. Yes, it must be split right at the front of the transmission to fix it. If you are losing fluid out of the TC, check your engine oil, it is probably going past the seal in the pump mounted on the left side of the engine. In other words, you may have 2 separate problems.

Forgot to mention, the transmission probably is overfilled due to water/condensation in it. Only supposed to have 3 1/2 pints of oil, but I have drained well over a gallon of oil water mix out of them at times.
This post was edited by john *.?-!.* cub owner at 21:02:34 06/05/14.

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TEXAN Connection

06-06-2014 03:35:14
65.111.51.146



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 Re: hydrolic leak on lo boy cub in reply to john *.?-!.* cub owner, 06-05-2014 20:31:25  
Thanks. Im guessing the trans does not have a plug on the side to check proper level. It would be nice if it did.



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ericlb

06-06-2014 03:42:20
67.142.161.22



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-06-2014 03:35:14  
if the low boy is like the regular cub it has a place to check the fluid level ,on the left side of the case, its a small square headed plug just about where the rim meets the tire on the rear wheel



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TEXAN Connection

06-06-2014 12:40:37
65.111.51.146



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 Re: hydrolic leak on lo boy cub in reply to ericlb, 06-06-2014 03:42:20  

would this be the oil level check plug? I discounted it as it seemed to far down for proper oil level. I did drain the fluid and refill with 3.5 quarts.



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john *.?-!.* cub owner

06-06-2014 19:43:22
174.125.0.179



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-06-2014 12:40:37  
I am having trouble spotting the plug in your photo, but that is the right area. Almost in line with the shifter and much lower on the side than you would expect. Very small plug.

As mkirsch stated, 3 1/2 pints, not quarts.



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steve alderman

06-05-2014 19:58:30
68.37.60.149



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-05-2014 18:42:03  
theres a seal on the hydraulic pump you can replace just make sure the shaft isn't wore too bad if it is it wont work I think they sell something for that also



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Brian Schmidt

06-05-2014 19:31:19
69.66.237.150



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-05-2014 18:42:03  
This sounds like an external leak. It is time for a TC rebuild. All the gaskets and seals are available through IH. There is some good instructions with photos on how to do this on the FarmallCub dot com website.

The hood/gas tank needs to come off. But the good news is no split is required.



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TEXAN Connection

06-05-2014 19:40:10
65.111.51.146



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 Re: hydrolic leak on lo boy cub in reply to Brian Schmidt, 06-05-2014 19:31:19  
what I have been reading its not likley the Touch control leaking. (has anyone ever heard of the TC leaking into the case?) but the transmission, (I replaced the engine seal) and the hyd pump may be leaking into the crank case.



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TEXAN Connection

06-05-2014 19:01:37
65.111.51.146



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 Re: hydrolic leak on lo boy cub in reply to TEXAN Connection, 06-05-2014 18:42:03  
is the touch control leaking? into the transmission case?



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