BeGe hydraulic pump
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=102590
Printed Date: 25 Jul 2025 at 8:07am
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Topic: BeGe hydraulic pump
Posted By: donoman
Subject: BeGe hydraulic pump
Date Posted: 27 Feb 2015 at 9:13pm
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Are there any BeGe rear pto pumps to fit a Hd 6 out there, I would like to get one to work the ram on my giant disc's and to operate a blade tilt without interfering with the existing hydraulics on the tractor.
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Replies:
Posted By: dustydoo
Date Posted: 27 Feb 2015 at 10:46pm
you may find a new front valve with bypass for ripper that is how I got my power beyond for the backhoe i mounted on mine
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Posted By: Mactractor
Date Posted: 28 Feb 2015 at 7:20pm
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Some guys have made them up I believe Peter. I think Merv said D4 7U pump was a good choice because it provided flow at relatively low revs
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Posted By: donoman
Date Posted: 28 Feb 2015 at 10:03pm
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Yes I could make one up using a pump which I have off a hydramower, it would run at half engine speed, with a direct pto, I have a foward/reverse Allis pto at around 540 rpm but I have other projects for that, quite a few TD6's had a pto direct with no reduction which would work. Merv might know of one. Thanks Peter
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Posted By: Mactractor
Date Posted: 01 Mar 2015 at 1:44am
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I was told HD5 and HD6 pto gearing is half engine speed, so at average HD6 operating engine speed, you have got around 800 rpm at the pto, which is close to the old Caterpillar engine speeds, hence the D4 7U pump suitability. The same speed matching theory was used when the LeTourneau cable control units from old larger Caterpillars were used on HD5/HD6 for cable scrapers. That approximate 800 rpm pto output was close enough to the big low revving Cat tractors with pto`s running at engine speed
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Posted By: donoman
Date Posted: 01 Mar 2015 at 3:25am
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The direct pto on the HD5/6 at 1800 rpm is 963 rpm so running them at 800 would be spot on, Merv might have a pump cheers Peter
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Posted By: Ray54
Date Posted: 04 Mar 2015 at 12:11am
BeGe pumps are common here in California,but most are warn out.Even new they only make 1000 psi.There are 4 common pumps 650, 850 in a large size and small size1000,and 1100.The mounting hardware is what is made for the tractor models.If you find a pump the mounting hardware can be built by someone with basic machining ability.I had one made 30 years ago still working if only the pump and valve wasn't warn out.
I don't know what you have now,but if not like a Cat set up with pump and valve inside the tank just change valves.I see your not in the US but there is a place called Surplus Center here that has a good online catalog and some good prices on hydraulic pumps and valves.I have several BeGe's I would like to replace with a higher pressure system. Good luck.
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Posted By: donoman
Date Posted: 05 Mar 2015 at 1:00am
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the setup I have seen only on the internet, is what is on the HD6AG there are some good pic's there
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Posted By: donoman
Date Posted: 05 Mar 2015 at 1:06am
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Its as much a case as putting a hydraulic system albeit low pressure which is , what would have been normal for that type of machine, I have a tractor with a diverter valve but they are hard to come by as well.
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Posted By: DMiller
Date Posted: 05 Mar 2015 at 7:31am
Zimmerman Tractor in Versailles MO seems to find a lot of Allis and Cat crawlers with Ag hydraulic systems added to the PTO systems at the rear.
http://www.crawlerbulldozer.com/default.htm
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Posted By: HD6 Merv
Date Posted: 06 Mar 2015 at 5:49pm
think I read about someone who adapted a cat 44 hyd control to a HD6 somewhere on the internet. And thought it was a cunning idea. 7u D4 ran at 1400rpm. not too sure on the flow but think would be around the 19gpm figure; pressure is 1000psi.
easiest way for your rear hyd Donoman would be a diverter valve sending oil to a rear control bank. That's what this HD6ew had for this setup, was twin rear circuits for ripper and tilt; or hyd scraper.
But you could look at the 7u hyd option; plenty of 7u D4s wrecked in NZ.
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tits tyres and tracks
they all cost you money
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Posted By: HD6 Merv
Date Posted: 06 Mar 2015 at 5:57pm
pic I had is too big to upload Donoman. But were a lot of diverter valve to dual rear valve hyds setups done by cable price to HD6s they sold here to use with there CPC6 scrapers.
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tits tyres and tracks
they all cost you money
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