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SMTA Live Hydraulic Pump Pressure?

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Idaho Boy

01-24-2008 17:20:10




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Gentlemen, I have a SMTA with, I am quite certain, an original IH live hydraulic pump. I am installing a Northern Tool # 2040 (Prince) flow control valve for a power steering motor. The instruction sheet says that there MUST be a relief on the INLET side of that flow control valve. The valve is rated to 3000 psi. Is the IH live pump rated in excess of 3000 psi?
I have purchased a pressure relief valve #2044(Prince), but had planned on installing it downstream of the flow control valve before the the power steering motor. If I install a pressure relief upstream of the flow control valve as instructed and reduce the pressure to 1000 -1200 for the ps motor, the bypass pressure will also be reduced, correct?

Also, how can I tell if my live pump is indeed an IH pump? What kind of pressure does this pump put out if in good condition? I've not put a pressure gauge in line to check the pressure. How much pressure does a remote cylinder need to perform to it's max? Does that vary by cylinder?

Any responses are appreciated! Thanks, Idaho Boy

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bc

01-25-2008 09:55:51




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 Re: SMTA Live Hydraulic Pump Pressure? in reply to Idaho Boy, 01-24-2008 17:20:10  
Hi, I've been wondering what the psi output or operating psi for a 606/656 would be? It has the dual pumps, a 12 or 17 gpm and then the 5 gpm pump that is typically for the steering. This one has them combined together and flowing on into the flow divider valve(the larger pump going into the bottom and the small pump going into the top of the flow divider). I'm just wondering what the expected pressure is and also what the bypasses are set to go off at. Something in the back of my mind says 1600 psi but I'm not sure. I'm probably going to have to find and buy a guage sometime but I'm not sure what normal is.

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ChrisAS

01-25-2008 08:01:26




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 Re: SMTA Live Hydraulic Pump Pressure? in reply to Idaho Boy, 01-24-2008 17:20:10  
The IH pump will put out much more then 1200PSI but you will take out the cam gear if you run much over 1200PSI that is why you need the relief valve in there.



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Randy in NE

01-25-2008 05:17:05




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 Re: SMTA Live Hydraulic Pump Pressure? in reply to Idaho Boy, 01-24-2008 17:20:10  
The relief valve is for over protection only. You do want to install it on the outlet side of the pump to protect all of your lines, fittings, and fixtures. A reulator valve is what would reduce your pressure.



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gene bender

01-24-2008 22:19:54




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 Re: SMTA Live Hydraulic Pump Pressure? in reply to Idaho Boy, 01-24-2008 17:20:10  
Pressure in lbs x area of cycl=capacity. The larger the dia and/or pressure in psi=force. Get a guage like other post says out it in line with a tee then and then only will you know what your pump has for pressure the heaver the implement you lift will give the best reading.



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Marv

01-24-2008 18:13:11




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 Re: SMTA Live Hydraulic Pump Pressure? in reply to Idaho Boy, 01-24-2008 17:20:10  
The original hydraulic pumps have rounded edges or corners. The aftermarket pumps have sharp corners.

The psi of the pump is usually measured by hooking a pressure coupler to the hydraulic hose that is used for implements such as plow. Activate the pump by moving the hydraulic forward or backwards and read the pressure generated by the pump. Should be 11 to 1200 psi.



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randy hall

01-24-2008 17:55:18




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 Re: SMTA Live Hydraulic Pump Pressure? in reply to Idaho Boy, 01-24-2008 17:20:10  
your super mta's hydraulic pressure is 1200# or less.



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