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mherndon 
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Joined: 30 Apr 2012
Location: Tennessee
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 Topic: D15 Series 2 Leaking hydraulic
Posted: 28 Apr 2024 at 7:22pm |
I've got a 1963 AC D15 series 2 that is leaking hydraulic fluid from the top of the torque tube where the traction booster control rod goes to the pump. There should be an o-ring there, but it should not be under pressure. The pump is plumbed to the back of the tractor on the outside. How can fuid be force out that entry? I've checked my fluid levels in the transmission and differential and they are fine. The hydraulic fluid is low. Could there be a blown line near the pump spraying at that entry when I try to lift and it makes it past the o-ring? Only leaks when trying to lift. Not sure if it would leak trying to hold something up. Any thoughts? Hoping for a simple fix.
Mark Herndon
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D-15, Old dealer in Smithville, TN
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DrAllis
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Posted: 28 Apr 2024 at 10:05pm |
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The Traction Booster control shaft has an oil seal on the shaft, not an Oring. I've had to replace a few over the years.
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mherndon
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Posted: 29 Apr 2024 at 6:07am |
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How much trouble for this oil seal? Do you have a part number or know where I can get one?
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D-15, Old dealer in Smithville, TN
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DrAllis
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Posted: 29 Apr 2024 at 6:34am |
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I'm not there looking at it. But, if you say it is leaking around the Traction Booster lever linkage that comes thru the top of the torque housing, yes, there is a shaft seal/oil seal on that control shaft. The knuckle has to be removed from the top of the shaft and technically the shaft would be moved downwards to access the seal. That means removal of the hydraulic pump to do that. I know an old boss of mine would sometimes dig around the shaft with a screwdriver and get that old seal out and with a deep socket drive in a new seal. An AGCO dealership should be able to get you the seal. I know they had them 3 yrs ago.
Edited by DrAllis - 29 Apr 2024 at 6:35am
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mherndon
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Posted: 29 Apr 2024 at 7:43am |
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Thanks DrAllis. I hope I can do it from the top.
Mark
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D-15, Old dealer in Smithville, TN
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mherndon
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Posted: 29 Apr 2024 at 9:17am |
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DrAllis, will the lift rod have the same seal for it? Might as well replace them both if they are the same.
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D-15, Old dealer in Smithville, TN
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DrAllis
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Posted: 29 Apr 2024 at 9:20am |
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They are the same seal, yes. Make sure the Lift/Lower shaft is tight, as it has brass bushings that sometimes need to be replaced for wear. Loose/wobbly shaft doesn't work well even with a new oil seal.
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mherndon
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Posted: 29 Apr 2024 at 9:22am |
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Thank you!
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D-15, Old dealer in Smithville, TN
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