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oldways 
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Joined: 25 Apr 2013
Location: west Ky
Points: 509
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 Topic: B front hydraulic pump size
Posted: 17 Jan 2023 at 11:22pm |
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I'm planning to add front mount pump for live hydraulic to my B. Can someone tell me what size gear pump to order ? I'm looking getting one from surplus center. Looking at GP series pumps. Need to know what displacement to get. Thanks .
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1 Corinthians 1:18 1969-190xt-III. 1966 190xt gas. 1966 190xt Cab. 1948-G. 1937-WC unstyled. 1950-B. 1951-CA. 1966-D17-IV
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 54270
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Posted: 18 Jan 2023 at 5:06am |
Go to their tech page. Remember that a B has only about 20 hp. I'd say you want ine that draws no more than 10 HP, 1500 PSI, around 5-10 gpm... Just my humble opinion... 
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AaronSEIA
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Joined: 11 Sep 2009
Location: Mt Pleasant, IA
Points: 2573
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Posted: 18 Jan 2023 at 5:50am |
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What do you want to do with the pump? Thats going to determine what size you'd need. I'd say 10 gpm and 2,000 psi would catch it.
AaronSEIA
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DrAllis
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Joined: 12 Sep 2009
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Posted: 18 Jan 2023 at 6:00am |
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What diameter of cylinders do you intend to use?? Anything a model B could handle would only need less than a 2 inch diameter cylinder, so 4 to 5 GPM would be plenty.
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oldways
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Location: west Ky
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Posted: 18 Jan 2023 at 8:51am |
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1.5 -2. Bore. Lift grader blade and belly mower. Currently use stock pump aftermarket cylinder. 3 point conversion. Works ok just not live and when grading driveway it's terribly aggravating and borderline dangerous. Have to stop in highway get blade up , tractor back in gear. Etc. Usual downfalls of not having live hydraulic.
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1 Corinthians 1:18 1969-190xt-III. 1966 190xt gas. 1966 190xt Cab. 1948-G. 1937-WC unstyled. 1950-B. 1951-CA. 1966-D17-IV
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DrAllis
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Posted: 18 Jan 2023 at 9:00am |
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Well, an old D-17 is only 4.5 GPM, so a "B" can't hardly be more than 2 GPM's.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 18 Jan 2023 at 9:01am |
rear pump is measured in QUARTS per minute.. Very small... Think of a 5 gallon bucket. If you pump that much in a minute, that would be PLENTY !.
for SIZE... lets say you want 2 gallons per minute... there are 230 cubic inches in a gallon , so you want about 500 cubic inches pumped per minute.... Your motor is running at 1500 rpm, so you need about .33 cubic inches displacement per revolution of the pump...
Look for pump sizes in the .31 to .36 displacement ( approx).
just make sure you get the right rotation... click on the pump and look at the rotation, speed and pressure rating... most of those pumps can put out 5 gpm at 3600 rpm... your running less than half that speed....... too big of pump and your "raise" speed will be too fast.
Edited by steve(ill) - 18 Jan 2023 at 9:20am
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Like them all, but love the "B"s.
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Les Kerf
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Joined: 08 May 2020
Location: Idaho
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Posted: 18 Jan 2023 at 12:46pm |
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An electric /hydraulic snowplow pump would be more than adequate for this task and much easier to hook up.
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DrAllis
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Posted: 18 Jan 2023 at 3:20pm |
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I agree Les. So many of these tractors have been converted to 12 Volts with an alternator anyway.
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oldways
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Location: west Ky
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Posted: 18 Jan 2023 at 8:04pm |
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Thanks for the help guys!
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1 Corinthians 1:18 1969-190xt-III. 1966 190xt gas. 1966 190xt Cab. 1948-G. 1937-WC unstyled. 1950-B. 1951-CA. 1966-D17-IV
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