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Hydraulic Top Link and Lift Link needed for B2410

Gregory Lee Williams Join Date: Posts: 1

2002-09-19          42656

I have installed the $70.00 rear (B) port extension on my B2410. I had the local NAPA store make up the hoses to extend out to the rear cross brace. I have the hoses terminated with a T and blocking plugs while I am locating a two spool control valve and a hydraulic top link and right lift link. Yea I know it is over kill but I like push button stuff. I also want to quick couple a hydraulic pole saw at the T before the control valve.
Help with sources and design ideas are appreciated.

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Hydraulic Top Link and Lift Link needed for B2410

TomG Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley

2002-09-20          42682

I'm not sure how the t-fittings are going to work. If both legs on the high-pressure line run to an open centre valve assemblies, operating a control valve on one assembly leaves the centre open on the other valve and no pressure will be developed. However, a disconnected quick-connector does block its line. The idea seems to work as long as both legs have quick-connectors and only one leg at a time is connected.

T-fittings in power-beyond return lines should work as long as no valves are downstream. The 3ph is downstream on many setups, and operating the 3ph creates pressure along the entire line upstream from the hitch. A t-fitting ahead of the hitch would allow oil to return to the sump rather than developing pressure for the hitch. T-fittings in the TANK return line on a PB valve assembly probably would work without complications.

I'd take some care in selecting a control valve assembly. The 3ph probably is down-stream from the valve. The exhaust oil parts of some valves are not designed to withstand operating pressures. The 3ph can develop enough pressure to break a valve if a control valve is operated at the same time the 3ph is lifting a load. Some simple control valves assume that the return line goes directly to the sump.

Protecting the exhaust oil parts from pressures developed by a downstream valve is the reason for PB valve assemblies. The TANK line carries cylinder exhaust and is isolated from the PB return line. Hence the name 'power-beyond.' They are intended for applications where there is a downstream valve. In other words, there is power beyond. The alternative to a PB valve is having a valve assembly that is rated for pressure on its exhaust parts or just assuming that the 3ph will never be operated at the same time as a control valve.

I’m not sure what NAPA does, but hydraulic lines come in a wide range of grades. I’d check that the line used is typical for ag operations.
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