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D4c240 hydraulic pupmp shaft seal

D4c240 hydraulic pupmp shaft seal

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wimmera farmer
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Trying to get a few more running for 100yrs of Caterpillar next year. D4C 240 Australian assembly same as 40A I believe. Hydraulic oil is getting into engine sump. Only place I can think of would be the drive shaft on the hydraulic pump. I have parts book for the tractor but it does  not show the hydraulic pump can someone please post a parts diagram or part number. thanks for looking WF  
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Thu, Dec 19, 2024 4:59 PM
wimmera farmer
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Refreshing, surely someone knows a bit about these. happy New Year
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Mon, Dec 30, 2024 4:03 AM
juiceman
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If you can look at the tag on your tank, I might be able to narrow it down to GPM. Here is what I have for 39A and 40A machines. See if you can determine the serial number for your 141 or 143 unit. JM
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Tue, Dec 31, 2024 2:53 AM
wimmera farmer
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Thanks Juiceman. No tag on the tank unless it is behind the dash panel, surley not. Only clue i have is pump has cast on the end Vickers Vane and some patent numbers I can't decipher. Both the parts diagram you kindly posted show the same part number for the seal 4J980 so that may be a starting point. thanks WF
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Tue, Dec 31, 2024 5:21 PM
ChrisE
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Reply to juiceman:
If you can look at the tag on your tank, I might be able to narrow it down to GPM. Here is what I have for 39A and 40A machines. See if you can determine the serial number for your 141 or 143 unit. JM
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Hi WF.
I suspect that the seal on the shaft would be a double lip seal that should be available at a bearing shop in Horsham. If the kidney plate seals are gone they might be able to match them at a hydraulic shop. It will be a gear type pump looking at the shape of it so should be
easy to fix. Most gear type pumps i have had apart you can get seals for locally. Good luck.
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Tue, Dec 31, 2024 5:31 PM
trainzkid88
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Reply to ChrisE:
Hi WF.
I suspect that the seal on the shaft would be a double lip seal that should be available at a bearing shop in Horsham. If the kidney plate seals are gone they might be able to match them at a hydraulic shop. It will be a gear type pump looking at the shape of it so should be
easy to fix. Most gear type pumps i have had apart you can get seals for locally. Good luck.
sperry-vickers is now part of eaton fluid power. so any decent hydrualics joint should be able to source parts for it. and yes that seal is probably a generic double or triple lip seal.

"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"

instead of perfection some times we just have to accept practicality

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Wed, Jan 1, 2025 8:13 AM
wimmera farmer
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Will get ito it next week when the shops are over their xmas pudding.
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Thu, Jan 2, 2025 3:31 AM
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