b7100

BiggB

New member

Equipment
B7100, B2030 front blade
Mar 20, 2026
23
10
3
New York
The pump may be capable of generating 3000 psi, but that doesn't mean it's a good idea for your application. Aside from the pressure ratings of the other components in the system, the engine may stall if it can't produce the required horsepower.

You can still use that pump; simply set the relief valve to the lowest common denominator.
It’s 12 volt not directly driven from the engine and it’s self contained so stalling the engine should not be an issue, I was just wasting time surfing for random stuff with 1000 ideas floating in my head
 

torch

Well-known member

Equipment
B7100HSD, B2789, B2550, B4672, 48" cultivator, homemade FEL and Cab
Jun 10, 2016
2,865
1,107
113
Muskoka, Ont.
No you don’t you sound as hard on yourself as I am on myself 👍. There’s a bunch of different ones on the site

0.91 gpm? Not what I'd want for a FEL. The stock B7100 pump is a bit slow @ 3 USGPM.

Besides, that's not a pump, it's a 12 hydraulic power unit. @ 1.6KW, it's going to draw >130A. The stock B7100 dynamo delivers 10A. It's going to kill the battery in short order. Much better to get a PTO or engine-driven pump.
 

BiggB

New member

Equipment
B7100, B2030 front blade
Mar 20, 2026
23
10
3
New York
0.91 gpm? Not what I'd want for a FEL. The stock B7100 pump is a bit slow @ 3 USGPM.

Besides, that's not a pump, it's a 12 hydraulic power unit. @ 1.6KW, it's going to draw >130A. The stock B7100 dynamo delivers 10A. It's going to kill the battery in short order. Much better to get a PTO or engine-driven pump.
They had a bunch of different sizes and capacities it was an ooooo that’s interesting kinda thing but I didn’t know the pressure, volume or draw
 

TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, G2160/RCK60, G2460/RCK60
Apr 6, 2021
11,790
6,724
113
Myersville, MD
windyridgefarm.us
They had a bunch of different sizes and capacities it was an ooooo that’s interesting kinda thing but I didn’t know the pressure, volume or draw
Those pumps are designed for low flow single acting lift applications. Stick with the tractor hydraulics or a front pump.

I had a senior moment with drill bit sizes and botched the hydraulic block. Starting over. :devilish:
 
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turttletwo

New member

Equipment
b7100 and b6100
Apr 12, 2026
8
1
3
washington state
For the engine (side) mounted pump there is a screen on the suction line. I believe it is what looks like a bolt head holding the rear of the line to the transmission case. Unscrew that and the filter is attached to that bolt head. But you will drain out all of the fluid if you remove it before draining the transmission.
 

turttletwo

New member

Equipment
b7100 and b6100
Apr 12, 2026
8
1
3
washington state
For the engine (side) mounted pump there is a screen on the suction line. I believe it is what looks like a bolt head holding the rear of the line to the transmission case. Unscrew that and the filter is attached to that bolt head. But you will drain out all of the fluid if you remove it before draining the transmission.
For the engine (side) mounted pump there is a screen on the suction line. I believe it is what looks like a bolt head holding the rear of the line to the transmission case. Unscrew that and the filter is attached to that bolt head. But you will drain out all of the fluid if you remove it before draining the transmission.
[/QUOTE Thank you for the info, so this confessed me because the 6100HST filter is located in line but located at bottom end of trans but for the Gear driven B7100 the line comes in just below the transfer block located on the trans, so it is pretty high up to loose much fluid but i just dont know, since i already serviced the trans not going to touch again until next trans service. Dont use the back lift that much at this time and the lucas gear oil a little spendy . So onto next project, today valve adjustment and clean fuel system and replace all old fuel lines, brakes also froze up but that will be tomorrow. Thanks again for your time
 

TheOldHokie

Well-known member
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Equipment
L3901/LA525, G2160/RCK60, G2460/RCK60
Apr 6, 2021
11,790
6,724
113
Myersville, MD
windyridgefarm.us
Do yourself and the tractor a favor - follow Kubota's current guidance. Replace that gear oil with any quality brand of Universal Tractor Transmission Fluid. Better performance and lower cost

Dan

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turttletwo

New member

Equipment
b7100 and b6100
Apr 12, 2026
8
1
3
washington state

TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, G2160/RCK60, G2460/RCK60
Apr 6, 2021
11,790
6,724
113
Myersville, MD
windyridgefarm.us
i Used Rotella on my HST love that stuff my diesel truck get this all the time, beets delo on breakdown and temp reading but on the on gear driven tractor it said to use 80/90
Kubota changed the transmission oil recommendations for all models to universal tractor fluid decades ago.

Dan