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capn lonnie 
Bronze Level
Joined: 20 Nov 2011
Location: maryland
Points: 43
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 Topic: Allis 400 loader
Posted: 21 Jun 2023 at 1:49pm |
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So when I put hydraulic fluid in my loader, it ends up transferring into the main housing and leaking through the overflow, and my loader stops functioning… there is a loader pump that mounts below the rear PTO shaft..is there a seal that could be bad, causing the fluid transfer? If so how difficult to repair? Thanks!
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'44 B '46 C '58 D-14 '78 5050
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7540
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Posted: 21 Jun 2023 at 3:55pm |
Which tractor? The 400 series loader usually had its own hydraulic reservoir in the left side upright support that was completely separate from the tractor.
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capn lonnie
Bronze Level
Joined: 20 Nov 2011
Location: maryland
Points: 43
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Posted: 21 Jun 2023 at 4:25pm |
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Tractor is a 5050, and yes, the reservoir is in the support… the pump is mounted to the rear just under the PTO shaft
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'44 B '46 C '58 D-14 '78 5050
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DrAllis
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Joined: 12 Sep 2009
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Posted: 21 Jun 2023 at 4:59pm |
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Shaft seal on the pump. Pump shaft bearing/bushing may be bad. Might have to replace the whole pump.
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capn lonnie
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Location: maryland
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Posted: 21 Jun 2023 at 6:48pm |
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Thanks, the pump seemed to be functioning properly with fluid, hopefully just the seal needs to be replaced
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'44 B '46 C '58 D-14 '78 5050
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