Touch Control Modifications ????

I want to replace an electric winch on my boom pole with a hydraulic one with quick connects. I also want to operate the belly mower and front blade on a cub with separate hydraulic loops. I've ordered the by pass blocks and I'll need a cylinder, valves, hoses, etc. I've never dabled with hydraulics but would like to tackle this. I have much to learn.

Q1: What's the best way to get educated for this DIY???
Q2: What's the HYD flow and pressure available from a 140 and a cub?
Q3: Does the hyd fluid flow through the valves all the time, or just when the implement is used?

education: hydraulicsupermarket . com has some good basic info but a lot of ads for it's own products.
John deere's fundamentals of service, Hydraulics. a book.
Although a Deere product, it has good basic and some advanced info.

if you know an ag teacher or college instructor with a hydraulic teaching setup, you might be able to play and learn what does what, or junk parts powered by air or a portapower would work for your own learning experience.

also you could look at various tractors and machines to see how different functions are plumbed and how they work


karl f

Terry: Q No.1 right here at YT, Q No.2 4.5 gpm at roughly 1,200 psi. Q No.3 I'm as curious as you, thus I will be standing by to see what you learn.

The guys over at farmallcub.com can help you out also.

The answer to question 3 is yes. The pump is a fixed displacement pump that is continually running. After the installation of your bypass block and hydraulic valve (the valve MUST be an open center type valve (as opposed to closed center)) the flow path will be something like the following. Fluid starts in the resevoir (touch control unit) flows through the bypass block into the line to the pump, goes through the pump, out the other line, gets diverted by the bypass block, passes through your new lines and valve (please note I believe your new system will have no safety valve unless you install one so if you dead end it you'll build whatever pressure the pump is capable of making), and then back into the touch control unit to be available for rockshaft movement.

Please note that unless I'm mistaken you'll only be able to use ONE funtion at any one time, ie. only one spool on your valve and the touch control will only work when you aren't using your additonal hydraulics (and vice versa).

Also you should be aware of limited capacity of the resevoir in the touch control and you will need to keep a close eye on the level or even install and additional resevoir.

Hopefully some of that made sense, Sam