Need some extra hydraulic performance for your old "b" series, heres how.

Rob

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B6000DT / B7100DP /B8200DT/L225/Globe PTO Chipper/Lewis Backhoe/huxley TR66
Nov 22, 2009
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Leafy England....
Hi guys,
I've been thinking about best way to get some extra hydraulic performance on b6100,7100 etc, well anything really with a 70mm series engine ( D650/750/850 )

Well the answer has been staring me in the face for almost a year now.
The B8200 has a larger output hyd pump, 22.7 ltrs/hour , which, is double the 11.78 from the pump fitted as standard to the smaller units.
The B8200 runs a decent spec D950 unit , the 70mm series engine same as the 6100,7100 etc.
Apart from the slighty lower hp ( a few horses) on the smaller tractors i cant see why the higher performance pump could not be used , i think it would make a massive improvement when using loaders etc which run from onboard hydraulic setup.
I have tried fitting the bigger pump onto a d850 in a B7100 , fitted fine.:D
i havent tried it on a machine with a loader yet but i suspect it will be a massive improvemnt.
just thought i would run this by you all.

I'm now working on the basis that with kubota tractors, the best plan is " nothing ventured, nothing gained" :)

rob
 
Last edited:

phaser

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Aug 6, 2013
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Re: Need some extra hydraulic performance for your old "b" series, heres how.

Another fine RobMod. Way to go!

.
 

North Idaho Wolfman

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Re: Need some extra hydraulic performance for your old "b" series, heres how.

Do you have part #'s for the pump?
 

bmwmike

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B7100, 1640A loader, tiller, box blade, grader blade, carry all. John deere 455,
Jan 13, 2013
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clarksville, Tn.
Re: Need some extra hydraulic performance for your old "b" series, heres how.

Rob,

According to tractordata.com the B8200 came with three different hydro pumps.

Early model 2 wheel drive hydraulic pump output is 15.1 Ltrs/min or 4 GPM.
( which is the same as the B7100)
Early model 4 WD hydraulic pump output is 22.7 Ltrs/min or 6 GPM.
( which is the one you listed as would fit in the b7100)
Late model 4WD hydraulic pump output is 24.6 Ltrs/min or 6.5 GPM.
(I wonder if this pump is the same size and would fit in the b7100 ? )

The B8200 was made from 1983 to 1990.
Do you know what years they call the early models and what are the late models?
I have both the front end loader and the power steering running off my hydraulics and would love to do this upgrade to my B7100hst.

mike
 

Rob

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B6000DT / B7100DP /B8200DT/L225/Globe PTO Chipper/Lewis Backhoe/huxley TR66
Nov 22, 2009
679
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Leafy England....
Re: Need some extra hydraulic performance for your old "b" series, heres how.

from my initial investigation into this, all the pumps will fit the engine, and as they all use the same basic hyd setup the hst may use a slightly higher capacity pump as it powers the hst drive curcuit aswell as the onboard and aux hydraulics.
the early manual versions such as mine use the 22.7 ltr pump for the hyd rear lift and aux curcuit but they use the same mounting point to the engine block which is the D950 .
probably the best option on a B7100 or similar othewise its going to require more power from the engine to really run the pump effectively.
 

Rob

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B6000DT / B7100DP /B8200DT/L225/Globe PTO Chipper/Lewis Backhoe/huxley TR66
Nov 22, 2009
679
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Leafy England....
Re: Need some extra hydraulic performance for your old "b" series, heres how.

forgot to say, my b7100 had the D850 lump and it fitted fine.
As allready mentioned the 70mm series engines all use the same basic engine and same block.
 

Rob

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B6000DT / B7100DP /B8200DT/L225/Globe PTO Chipper/Lewis Backhoe/huxley TR66
Nov 22, 2009
679
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18
Leafy England....
Re: Need some extra hydraulic performance for your old "b" series, heres how.

just to update you , not sure tractordata is 100% accurate for all regions that the B8200 were manfactured for.
My official spec sheet with pump data for both 2 and 4 wd versions (non -hst ) use the same 22.7 ltr pump

there you go, down to 2 choices now;):)

rob
 

tradin1

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b7100
May 17, 2013
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tx
Re: Need some extra hydraulic performance for your old "b" series, heres how.

any updates on this? i ordered the b8200 hst 4wd hyd pump so hoping it will b a noticeable improvement.

thx