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Curtis power angle

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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-02-26          151699


I have a Curtis snow plow with power angle on my Kubota B7510 that replaces the loader bucket via quick connect.
I use the loaders curl/roll portions of the hydraulic for power angling of the snow blade.
Why does the power angle "stick" on one side? Angle left smooth and no problem. Angle right and the valve control "sticks" like it would when you use the float position. Push the lever hard and the blade will angle, but it is fast and slams. Why does it do that and can I eliminate it by bypassing their connector block?
The dealer who installed it says that how Curtis works.
Curtis hasn't replied to my email.
Any info or advice would be appreciated.

Bob




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Art White
Join Date: Jan 2000
Posts: 6898 Waterville New York
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2008-02-26          151711



That is how the loader control valves work when you attach a blade instead of a loader on that model tractor. The valve works very well with a bucket from gravity to dump. With a blade you need power to angle and the way your valve is configured you have to go to the fast cycle for a right angle. ....


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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-02-27          151715


Thanks Art. So the issue is in the tractor loader valve, not with the Curtis. I was hoping there might be a quick fix but I can live with how it is.
Thanks again for your expertise.
Bob ....


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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2008-02-27          151723


My backhoe used to swing way too fast both ways. Installing much smaller lines on the swing cylinder solved that. You may be able to sort of do the same thing by reducing the fitting)s) right at the too-fast cylinder. Cost may $5 to try it, might be worth it. ....


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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2008-02-27          151724


What EW is talking about is called a "line throttle valve".

For this type of application I would recommend the adjustable type. Basically it just chokes off the flow of hydraulic flow in one direction without affecting it in the other.

By way of explanation, and to follow up on what Art said, the valve on your FEL is optimized for a specific purpose, your FEL. Since gravity (and cylinder volume) is against you with curling the bucket upwards loaded with dirt or whatever, and is helping you to dump it, so they have designed the valve with more flow in the upwards direction.

When you put on the plow you need to restrict the flow into the cylinder on the curl pressure side in order to equalize the two sides.

If you need a pointer on a valve just whistle.

Best of luck.

....


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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-02-28          151763


Thanks for the suggestions and info. I'm not too up on hydraulic systems and function, but it sounds like I could
reduce the line diameter of the opposite side of the power angle (the dump side of the bucket). Murph suggests an adjustable "line throttle valve", thats some words that I"m just not familiar with. Is that something like a manual ball valve? Where would I get one and where would be the easiest/best place to install it? ....


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EMERICHSALES
Join Date: Jul 2003
Posts: 75 187 Valentine Road, Charlton/Ballston Lake, NY 12019
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2008-03-01          151808


We use a Curtis #9pkfelbv Auxiliary Valve and make a bracket for it. Then you have angle side to side ( Same Speed ) , up, down and tilt. Seems to work great. On the Larger tractors we use a WR Long Valve. Web Site http://www.wrlonginc.com/valve_kits.htm
Which also works great.
Kevin ....


Link:   

Click Here


 

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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-03-02          151851


Thanks for the info Kevin. I checked out the valve and it seems a little pricey for what I want to do. The "hitch" when I angle the Curtis blade isn't something I can't live with, I just thought there might be a "quicker (cheaper) fix". Appreciate your input. ....


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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2008-03-03          151857


Bob, I think you're right about the cost, all you need is a simple valve.

By way of explanation, a "line throttle valve" does as the name suggests, it regulates (like a throttle) the flow of hydraulics by limiting it. It is sort of like a ball valve, but with one big difference, it only acts in one direction, in the opposite direction it has restriction at all.

They come in two versions, set or adjustable flow, and both work the same way. It has a spring-loaded restrictor that limits the amount of fluid flowing in one direction, while the opposite flow pushes harder than the spring and allows full flow.

I don't know what size lines you have on your machine, but here is the type of valve I'm talking about for 1/2" lines.

Best of luck. ....


Link:   Northern Tool Throttle Valve.

 

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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-03-03          151872


Thanks Murph,
I checked the Northern Tool valve and it looks like a reasonable answer. I got a lot of input about this issue and I am impressed with the guys responses to mine and other peoples situations. What a neat group you all are.
I am glad I found this site. Maybe someday I can help someone.
Bob ....


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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2008-03-04          151878


"Maybe someday I can help someone."

Bob, today is your lucky day--I need 20 bucks! :) ....


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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2008-03-04          151884


Problem is EW it'll cost you a bunch more than $20 in gas to to south west PA.....

Best of luck. ....


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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-03-04          151892


See what I mean EW, just about the time you think you have a good idea, someone like Murph comes along with his wisdom and points out something you hadn't thought about.
Besides that, this time of year ain't pretty here unless it's fresh white snow, after that it's back to bald trees,
slush and dull winter, saved only by an ocassional cardinal in a pine tree at the feeder.
Good chatting with ya guys, thanks,stay warm and take care.

Bob ....


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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
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2008-03-04          151897


Now Bobby boy let's not be suckin' up to Murf! He puts his pants on just like the rest of us--when he wears pants (ewwwwwwe!).

Ain't nobody think of snail mail? I didn't say I needed it RIGHT now! ....


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BobMeyers
Join Date: Aug 2007
Posts: 15 Southwest Pennsylvania
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2008-03-04          151905


"The check's in the mail"
I'm off to therapy now, talk about "painting pictures".
Take care guys. ....


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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2008-03-05          151927


Jeff's just jealous 'cause he doesn't look as dashing as I do in a kilt, that's all. ;)

Of course my kilt is plaid, not that blue shiny stuff but still......

Best of luck. ....


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