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Case Tractors Discussion Forum
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Case 430 leaking oil

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RFW

03-17-2007 08:36:48




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I have noticed on my Case 430 there is oil leaking from my differential more specifically from the brake cover. The hole where the brake rod goes through. I assume there should be no oil under this cover where I assume the brakes are located. I am not familiar with this area at all, I can only assume I need to move this cover off to determine where the exact leak is. Can anyone assist me in telling me what I should be looking for. Any and all directions would be appreicated. I want to keep my pride and joy running. Please help. Fellow Case enthusiasts have a good safe day.

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J heitkemper

03-17-2007 15:10:25




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 Re: Case 430 leaking oil in reply to RFW, 03-17-2007 08:36:48  
Hi RFW , Barry and Brad are right . If tranny is overfull . The hydro piston sits above the tranny 90 weight and can intermix when the seals on the piston fail . add a qt of Lucas Hub sealer in the Hydaulic reservoir, left side of triple range case ,, It is worth a try before getting out all the tools ,,That seal is a Bear to get back in the JUG , and it costs $60 .. I Been running the 430 for years Good luck .. Jim

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JGarner

03-19-2007 15:38:19




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 Re: Case 430 leaking oil in reply to J heitkemper , 03-17-2007 15:10:25  
Jim, don't know if you remember, but several months ago I posted a message with a similar problem on my 630. You indicated that Lucas gear lube might stop the leaks from the differential brake shafts for me too. I added 3 qts of Lucas to the differential and drove the tractor around the neighborhood for a bit.

The leaks have not stopped yet after 4-5 months. How long does it take for the Lucas lube to work? When do I say that won't work and take it all apart and replace the o-rings and shaft seals?

JGarner

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J Heitkemper

03-19-2007 21:06:27




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 Re: Case 430 leaking oil in reply to JGarner, 03-19-2007 15:38:19  
Shucks J ..If You have not seen any positive difference by now , .. You will probably have to replace the seals .. Besides being a ultra lubricate , What this this stuff does ( and there are similar products out there ) is soften old tired rubber and give it new life and cause it to swell so to speak around the seal , hence stop the leak s .. However if the seals are broken .,it cannot repair.. If tranny is known to be clean and not likely contaminated I usually try to save the drained oil for future uses in other tired equipment that will not be compromised therefore getting all I can from the Lucas additive ,, I also have a old round magnet that I keep in my used oil bucket,, just to see what comes out of these old machines .., Good luck Jim

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JGarner

03-20-2007 06:32:39




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 Re: Case 430 leaking oil in reply to J Heitkemper , 03-19-2007 21:06:27  
Kind of what I was thinking. The oil is new, I put it in last fall when I drained and cleaned the differential case, and yes I used my old magnet on a pole and fished around in the bottom of the case after flushing with diesel and repeating the magnet and flush about 4 times. Ulitmately I am going to replace one final drive gear, differential brake shaft and the pinion and differential ring gear. Looks like the old girl ate the lock washer from a cover bolt that I noticed was missing. Guess a previous owner dropped one and thought it went on the ground.

From inspection of the differential and associated parts it looks like the whole system is so over designed that there is enough good gear left every where that for the time being I won't have to worry about it. After cleaning and flushing the differential does not make any noise. I am going to drain out about 5 gallons of lube and pull both sides and replace the o-rings and shaft seals. 5 gallons should get the level below the brake cover holes in the case. Taking out 5 gallons will leave 3 3/4 gallons in it. Think that's enough to run out when I pull the shaft/seal housings out??

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BarryfromIA

03-17-2007 13:47:28




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 Re: Case 430 leaking oil in reply to RFW, 03-17-2007 08:36:48  
Check the oil level in the rear end it might be over filled. Some times the three point leaks.



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bradley martin

03-17-2007 13:41:55




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 Re: Case 430 leaking oil in reply to RFW, 03-17-2007 08:36:48  
The seal on the brake pinion is leaking. You need to remove the cover, brake discs and acuator inorder to gain access.



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