B6100 front loader hydraulic pump

[dave86]

curious, I googled 'kubota b219' and 1st hit was the manual, at www.kubotabooks.com.

you should download that as it should be full of 'neat information'....

Thanks. I found it. I wish I had in in 1980 when I put the unit together with no instruction manual. I did not see pump specifications in it.

 

[Donystoy]

Afraid I dont follow the logic. Same pump at same speed on larger cylinders can not run faster or with less power.

Dan

Exactly! What I cannot understand.

 

[dave86]

Spool valves and gear pumps are not generally rebuildable. When they die you replace them.

Your loader valve is two handle operation. You can replacce it with the same thing for $189:

Monoblock Hydraulic Directional Control Valve, 2 Spool w/ Single Float Detent, 11 GPM

This Monoblock Hydraulic Directional Control Valve uses 1 Float & 1 "A" Spool. It has a capacity of 11 GPM. Free Shipping

summit-hydraulics.com

Or for $60 more you can upgrade it to a joystick. I think thats a no brainer:

Hydraulic Directional Control Valve for Tractor Loader w/ Joystick, 2 Spool (Single Float Spool Optional), 11 GPM

This Monoblock Hydraulic Directional Control Valve uses a Joystick, 2 Spools and has a capacity of 11 GPM. These valves are used to start and stop fluid flow into hydraulic cylinders or hydraulic motors.

summit-hydraulics.com

I have put something close to a hundred of these pumps on various tractors and they are the first place I look. This one will give you 7 GPM @ 2000 RPM and should bolt right up. You can go bigger or smaller for the same price. You will also probably need to replace the pump half of the chain coupler with one that matches the 5/8" shaft on these pumps - another $15.

Gear Pumps | Hydraulic Pumps | Hydraulics | www.surpluscenter.com

Gear Pumps,Hydraulic Pumps,Hydraulics, 1.22 cu in HYDRECO GEAR PUMP New. Aluminum housing. Teflon lined bushings. SPECIFICATIONS 1.22 cu in dia 2900

www.surpluscenter.com

One last thought. I dont think that loader had a hydraulic filter and if not I would definitly add one.

Dan

IT does not have a filter. What filter would you recommend? On which line should it be mounted?

 

[TheOldHokie]

Exactly! What I cannot understand.

Sonething else going on.

Dan

 

[GreensvilleJay]

well the manual does tell how to assemble it, gives parts list and sizes, and how it works..

that information is 'neat' to me and could be important to owners of that loader.
ANY info from the OEM is nice to have, as you can compare what you have to what WAS there, from the factory. Over the past 4 decades,someone could have replaced something,which may affect how it performs.

 

[TheOldHokie]

IT does not have a filter. What filter would you recommend? On which line should it be mounted?

Standard hydrsulic filter headcand spun on element placed anywhere in tje reurn line. Pressure side will blow it up in seconds.

Dan

 

[Swede1962]

I have a B6100D and a B219 front loader. I have a pump with a shaft sticking out one side and a chain sprocket on the end of the shaft, nothing more. Where does one find the part that rides on the splined shaft and drives the pump? Or is this a trip to my favorite machinist shop to see if he is really as good as he thinks he is?

 

[TheOldHokie]

I have a B6100D and a B219 front loader. I have a pump with a shaft sticking out one side and a chain sprocket on the end of the shaft, nothing more. Where does one find the part that rides on the splined shaft and drives the pump? Or is this a trip to my favorite machinist shop to see if he is really as good as he thinks he is?

That shaft is rare as unicorns. Your machinist better be knowledgeable and well equipped - 25mm internal involute spline, pressure angle unknown. He might be better off making something from scratch for that end.

Dan

 

[Swede1962]

That shaft is rare as unicorns. Your machinist better be knowledgeable and well equipped - 25mm internal involute spline, pressure angle unknown. He might be better off making something from scratch for that end.

Dan

He’s knowledgeable and very capable. My first thought was to open up the front bracket area to better accommodate a pump setup and then circle back around with a new enclosure/protection designed into the front of the frame area under the radiator. It seems working room is minimal in that area creating in part this will friendly setup to drive the pump. Your thoughts?

 

[Swede1962]

That shaft is rare as unicorns. Your machinist better be knowledgeable and well equipped - 25mm internal involute spline, pressure angle unknown. He might be better off making something from scratch for that end.

Dan

That spline shaft bolts into the end of the crank? Is that right?

 

[TheOldHokie]

That spline shaft bolts into the end of the crank? Is that right?

I am not sure. On that tractor it may be part of the crankshaft.

Dan

 

[Swede1962]

I am not sure. On that tractor it may be part of the crankshaft.

Dan

In the drawing I found it shows bolted but I’m like you, that’s not definitive enough to be 100% certain.

 

[TheOldHokie]

In the drawing I found it shows bolted but I’m like you, that’s not definitive enough to be 100% certain.

Is this your drawing?

Dan

 

[Russell King]

@TheOldHokie and @Swede1962

I thought I had posted this link to a similar thread the other day. The thread covers how one person found a part and modified it to work as the front PTO shaft and @TheOldHokie posted a drawing of a simple machined shaft to fit over the splined shaft.

B7100D hydraulics and adding a FEL

Hey guys, just wanted to give an update. I've had the Westendorf TA55 frontloader on there for a while now with no problems! I've got ~25 hrs of heavy front loader work with no issues. I ended up fabricating a pump shaft using the female spline of flange 66704-88530 to 3/4" keyway stock and a...

www.orangetractortalks.com

 

[Swede1962]

Is this your drawing?

Dan

View attachment 155741

Yup. It’s not the correct reference to what we’re talking about. I just figured that out.

My question is why can’t I put a splined gear that accepts the chain drive to match the chain drive gear I have attached to the old pump I got with the loader? I can either buy a gear ready to install on n the shop lined crank shaft or have one made to mate up with what I have in hand. I think I can solve my problem this time way.

 

[Swede1962]

@TheOldHokie and @Swede1962

I thought I had posted this link to a similar thread the other day. The thread covers how one person found a part and modified it to work as the front PTO shaft and @TheOldHokie posted a drawing of a simple machined shaft to fit over the splined shaft.

B7100D hydraulics and adding a FEL

Hey guys, just wanted to give an update. I've had the Westendorf TA55 frontloader on there for a while now with no problems! I've got ~25 hrs of heavy front loader work with no issues. I ended up fabricating a pump shaft using the female spline of flange 66704-88530 to 3/4" keyway stock and a...

www.orangetractortalks.com

Where did you source the gear?

 

[Swede1962]

@TheOldHokie and @Swede1962

I thought I had posted this link to a similar thread the other day. The thread covers how one person found a part and modified it to work as the front PTO shaft and @TheOldHokie posted a drawing of a simple machined shaft to fit over the splined shaft.

B7100D hydraulics and adding a FEL

Hey guys, just wanted to give an update. I've had the Westendorf TA55 frontloader on there for a while now with no problems! I've got ~25 hrs of heavy front loader work with no issues. I ended up fabricating a pump shaft using the female spline of flange 66704-88530 to 3/4" keyway stock and a...

www.orangetractortalks.com

I’m putting this in my watch list so I can let my machinist read it and see what needs to be done. This is out of my wheelhouse too far. Thx a bunch for the info.

 

[Russell King]

Where did you source the gear?

I am not sure what “gear” you are after unless it is the chain coupling half you are calling a gear.

As I understand the arrangement, there is already a splined shaft on the engine, then a shaft was added to extend out the front of the tractor. On the end of that shaft and on the pump shaft two matching coupling halves were mounted. The pump was face mounted and then a double row chain was installed on the coupling and connected together.

Those couplings are available in many places (McMaster Carr).

 

[TheOldHokie]

Yup. It’s not the correct reference to what we’re talking about. I just figured that out.

My question is why can’t I put a splined gear that accepts the chain drive to match the chain drive gear I have attached to the old pump I got with the loader? I can either buy a gear ready to install on n the shop lined crank shaft or have one made to mate up with what I have in hand. I think I can solve my problem this time way.

I suspect your gear is actually a chain sprocket which is one half of a chain coupler. The other half of the coupler goes on the end of the tractor side shaft and a double row chain is wrapped around them to join the two shafts. An inexpensive standard part.

The hub in the parts diagram I posted fits over the nut for the crankshaft pulley and bolts to the face of the pulley.

My suggestion is have your machinist make a custom hub with a standard keyed bore for the crankshaft. From there out you can use off the shelf shafting to connect the hub to your pump. Easy for the machinist and you.

Dan

 

[Lil Foot]

From the B219 manual: