Construction and other equipment - HD5G hydraulic pump

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HD5G hydraulic pump

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=140319
Printed Date: 02 Aug 2025 at 11:02pm
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Topic: HD5G hydraulic pump

Posted By: DavidnTenIll
Subject: HD5G hydraulic pump
Date Posted: 11 Jul 2017 at 5:30pm

Am looking for a usable Vickers or Hydreco pump for Hd5g.

Replies:

Posted By: DMiller
Date Posted: 11 Jul 2017 at 6:06pm

I have the spare off my 7G if it is similar?

Posted By: DavidnTenIll
Date Posted: 11 Jul 2017 at 7:08pm

I dont know about HD7. Numbers i have for pump is either a 2025G1B1 Hydreco or Vickers V300 28. Should be a tag on your pump. Thanks, David.

Posted By: DMiller
Date Posted: 11 Jul 2017 at 8:08pm

Will dig it out tomorrow or Thursday as is in the barn and check.

Decided to check parts book, mine is a Tyrone, not Hydreco or Vickers

Posted By: Coke-in-MN
Date Posted: 11 Jul 2017 at 10:31pm

The vickers is a vane pump and was used on the early units - the problem is finding the matching drive plate to fit crank pulley on that pump .

I have a spare pump but the internals are scored so questionable, in my HD5 pile .

I did pick up a Hydreco about 2 years back at Hutch but have not looked at it since - its somewhere in my pile of spare things - one of these days projects .
Finding a 32 GPM pump @ 1800 RPM presents somewhat a problem

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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."

Posted By: Dozer
Date Posted: 12 Jul 2017 at 5:36am

The hydraulic pump on my HD5B is much smaller than the pump on my HD6G.
Dave or Rob (800) 398 3448 wrights@adams.net had an hd5 pump last November when I bought parts from them.

Posted By: Dozer
Date Posted: 12 Jul 2017 at 5:39am

Wrights also had the pump drive.

Posted By: Coke-in-MN
Date Posted: 12 Jul 2017 at 8:38am

oops the 5G used the 32 GPM pump - on a B with only blade lift needed GPM is a lot less

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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."

Posted By: DavidnTenIll
Date Posted: 13 Jul 2017 at 7:44pm

Found a Prince Hydraulics 32 gpm pump on surpluscenter.com that I have decided to go with. Gear pump 2500 psi max. 32 gpm at 2000rpm for $389.00 will require some mount and coupling modifications. Appreciate the posts and info. Thank you all , David.

Posted By: Dozer
Date Posted: 14 Jul 2017 at 5:13am

Post pictures of your conversion.

Posted By: Dozer
Date Posted: 14 Jul 2017 at 6:15am

Are you considering a 1 3/8 six or 21 tooth PTO pump? The crankshaft drive would be easy. Please post the prince part number.

Posted By: DavidnTenIll
Date Posted: 15 Jul 2017 at 5:13am

Prince part # SP25A63A9H2L is the number of pump were going to try. It will require fabricating/machining of pump mount bracket and a coupling modification. David.

Posted By: Dozer
Date Posted: 15 Jul 2017 at 6:45am

Your SP25A63A9H2L pump is aluminum with O Ring Boss fittings. Get short lengths of ORB pump fittings on one end so that you can make the hose conversion at a convenient place under the rock guard.

Posted By: DavidnTenIll
Date Posted: 15 Jul 2017 at 8:08am

Yep. Planning orb to jic37° fittings. Trying to figure best way to put some filtration in hydraulic system. Quite polluted. Sucked out bottom of my left tank with a tube extension. Lot of sludge/dirt. No access to right tank other than return and crossover. I know they had a factory option for filters but not sure where they plumbed in. David.

Posted By: Dozer
Date Posted: 15 Jul 2017 at 4:10pm

I suggest a short hose on each port of the pump because the pump is aluminum. You have a good chance of damaging the threads on the pump when it is attached to long difficult to align hose. The hose attachments to the pump are difficult because of the rigidity of the hose and the near by 90 degree bends. I have done this on my HD6G's. I am thankful for the remote connection whenever I have to deal with the hydraulics.

Good luck Post pictures

Posted By: DavidnTenIll
Date Posted: 17 Jul 2017 at 8:05am

Thanks for the suggestions. Will keep in mind.

Posted By: JC-WI
Date Posted: 17 Jul 2017 at 9:20am

Can cut a hand clean-out hole into tank near base and then make a new cover for it to bolt on, seen that done a few times. but requires drilling and tapping.

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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."

Posted By: Coke-in-MN
Date Posted: 17 Jul 2017 at 9:33am

Did you check under the valve body for access to right tank ?

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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."

Posted By: DavidnTenIll
Date Posted: 18 Jul 2017 at 6:02am

Yep but it looks like you have to remove valve assembly as it looks like that's where valve returns oil to tank. Thought about cutting clean out access too. Oh well more to do.

Posted By: Coke-in-MN
Date Posted: 26 Jul 2017 at 12:28am

A screen filter on the intake as a filter of any other kind would restrict flow , and you could rinse the tanks through the top - yes the oil return is into right tank under valve body -
No good way to filter the return side - and high pressure filter is a real chore

Flow pressure should be between 1200 and 1500 PSI - unsure if cylinder seals will stand much over that for extended time without heat buildup