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dadsdozerhd5b 
Orange Level
Joined: 27 Sep 2009
Location: lansdale pa.
Points: 535
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 Topic: hd5b hydraulic pump hydreco
Posted: 28 May 2017 at 7:25pm |
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the hits won't stop. I am just about complete with the restoration of my dad's HD5B and I found a small leak at the front of the dozer that just started. I found the hydraulic pump for the dozer leaking slightly out the shaft seal. I have had the dozer in the shop about 1-1/2 years since I started the major restoration. has anyone had this issue that when you started running it again the leak stopped? the pump is a hydreco 2025g1gb. I have several spare pumps but this is the best one. I took one of the spares apart and the way the mechanical seal looks is like it seals better the more pressure the pump has thus I thought that running it might make it better. Does anyone know of a hydreco dealer that I can get parts from? any help is appreciated. I hope this is the last hurtle as I need the machine for some mountain road building. thanks
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HD5B, HD5G, (2) FARMALL A's, CUB. DO IT RIGHT THE FIRST TIME, IGNORE THE LAUGHTER. FLANNEL IS ALWAYS IN STYLE.
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 53905
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Posted: 29 May 2017 at 4:56am |
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Tim, check your P.M.
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41960
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Posted: 31 May 2017 at 9:49am |
Mine was leaking some and had place look at it that said they could fix anything - NOPE said it was shot beyond repair - ended up putting it back in service - has not leaked since I had found a rebuilt Vickers pump for the early HD5 machines but they used a different drive plate which I could not find . a 30 GPM pump for the 5G is tough to find as is modifying a new unit to fit .
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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dadsdozerhd5b
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Joined: 27 Sep 2009
Location: lansdale pa.
Points: 535
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Posted: 04 Jun 2017 at 7:50pm |
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278.00 for the seal lit. OMG! I am going to try it as is and see what happens. I have 5 other pumps, all look like they leak at the front seal. if the original still leaks I will rebuild one of them. I have the same part number that is in the 5g parts book, not sure if we just had a lot of them or they are the same as the dozer. I cannot find my dozer book to check the part numbers. anyone have a grade builders (I think that is what it is called) book for the hd5?
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HD5B, HD5G, (2) FARMALL A's, CUB. DO IT RIGHT THE FIRST TIME, IGNORE THE LAUGHTER. FLANNEL IS ALWAYS IN STYLE.
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Dozer
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Joined: 16 Aug 2011
Location: SW New York
Points: 689
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Posted: 05 Jun 2017 at 7:19am |
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Post a picture of the pump seal. If it is a round shaft seal it could be available from a bearing dealer. I have fabricated shaft seals that I was unable to purchase.
Good luck
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41960
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Posted: 05 Jun 2017 at 8:07am |
believe the output capacity was less on the 5B Wear on the 5G pump internals also lead to less capacity - pump on mine use to stall engine when lifting to full height on bucket - would drag engine down quickly if levers were not brought to neutral position - - over 40 years it has gotten to where it's barley noticeable now of any power drain. Wear plates on pump as well as other parts internally allow bypass
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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