B6200 hydraulic pump removal

[Andy C.]

Anyone have tips on removing hydraulic pump on b6200?

 

[TheOldHokie]

Anyone have tips on removing hydraulic pump on b6200?

Pretty easy. Disconnect hydraulic tubes, and hoses, remove bolts, and pull it out. Biggest issue is in a tight spot.

Bigger question is why and what ya gonna do with it.

Dan

 

[Andy C.]

Pretty easy. Disconnect hydraulic tubes, and hoses, remove bolts, and pull it out. Biggest issue is in a tight spot.

Bigger question is why and what ya gonna do with it.

Dan

Thanks Dan, was going to replace oil seal. It’s leaking hydraulic fluid into crankcase and hydraulics are also weak and slow. Maybe pump is bad but figured I’d try a new seal first. Any idea what size wrench is needed for the big bolts connecting the hydraulic tubes? They look similar size to the hydrostatic filter screen bolts. Definitely a tight spot in there even after getting fuel filter out of the way.

 

[TheOldHokie]

Thanks Dan, was going to replace oil seal. It’s leaking hydraulic fluid into crankcase and hydraulics are also weak and slow. Maybe pump is bad but figured I’d try a new seal first. Any idea what size wrench is needed for the big bolts connecting the hydraulic tubes? They look similar size to the hydrostatic filter screen bolts. Definitely a tight spot in there even after getting fuel filter out of the way.

Can't help with wrench size. Been a long time since I did mine.

Seal can fix a leak but it won't fix low pressure.

Dan

 

[jiggseob]

How weak is weak? How slow is slow?

My B6200 HST guages at only 1750 psi with cool oil, but hydraulics are strong enough that when I put the bucket-edge of the loader under a too-big rock and lift, the rear wheels come off the ground - no rear ballast though. If I mount the Muratori tiller on the 3-point, the hydraulics power-out before lifting the rear wheels. I have thus established a "hard-limit" to lifting too-stupid-much with the loader. If I put a new 2200 psi pump on, and lifted with all the force that the hydraulics could do, would something else - front spindle, loader arm, loader frame, front axle, etc - break? I'm going to stay with this "operating safety limit" and hopefully never find out whats the first thing to break when over-loading the loader.

I'm not sure what the B6200 is supposed to flow, could be like 3.5gpm, and that would be when revved to the pin. For linear actuator circuits, that is enough, things move the way they move. If you have some sort of flow-hungry thing with an orbit motor, like a post-hole drill or something, there might not be enough flow to overcome the parasitic leak-by thats part of every orbit motor.

At some point in the past, I had slow hydraulics, and it turned out that my 3-point hitch control lever was stuck way way way at the top, and the 3pt lift circuit was reducing hydraulic flow to the aux/loader circuit. I moved the 3-point hitch control lever down a smidgen and hydraulic flow got less-worse.

 

[TheOldHokie]

How weak is weak? How slow is slow?

My B6200 HST guages at only 1750 psi with cool oil, but hydraulics are strong enough that when I put the bucket-edge of the loader under a too-big rock and lift, the rear wheels come off the ground - no rear ballast though. If I mount the Muratori tiller on the 3-point, the hydraulics power-out before lifting the rear wheels. I have thus established a "hard-limit" to lifting too-stupid-much with the loader. If I put a new 2200 psi pump on, and lifted with all the force that the hydraulics could do, would something else - front spindle, loader arm, loader frame, front axle, etc - break? I'm going to stay with this "operating safety limit" and hopefully never find out whats the first thing to break when over-loading the loader.

I'm not sure what the B6200 is supposed to flow, could be like 3.5gpm, and that would be when revved to the pin. For linear actuator circuits, that is enough, things move the way they move. If you have some sort of flow-hungry thing with an orbit motor, like a post-hole drill or something, there might not be enough flow to overcome the parasitic leak-by thats part of every orbit motor.

At some point in the past, I had slow hydraulics, and it turned out that my 3-point hitch control lever was stuck way way way at the top, and the 3pt lift circuit was reducing hydraulic flow to the aux/loader circuit. I moved the 3-point hitch control lever down a smidgen and hydraulic flow got less-worse.

If all you are getting is 1700 PSI the pump is probably worn. Here is the fix.

Dan

 

[jiggseob]

1750 PSI? Yes, my pump is worn. No argument there. It still works, and the somewhat limited max-pressure has the added side benefit of preventing me from over-lifting with the loader. The loader still lifts a bucket full of 3/4-crush gravel. So as long as adequate loader and 3pt lift capability remains, I will go with the "worn" pump that is not quite yet "worn out".

 

[TheOldHokie]

1750 PSI? Yes, my pump is worn. No argument there. It still works, and the somewhat limited max-pressure has the added side benefit of preventing me from over-lifting with the loader. The loader still lifts a bucket full of 3/4-crush gravel. So as long as adequate loader and 3pt lift capability remains, I will go with the "worn" pump that is not quite yet "worn out".

Hey if you are fine with it that's great. But a 300 PSI pressure loss works out to a bit over 1000 pounds of lost cylinder force.