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Subject: 8-N hydro question

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Bigtom1960    Posted 08-06-2017 at 12:39:59 [URL] [DELETE]        [Reply] [Email]  
  • 8-N hydro question
  • I have an eight in tractor with a side mount distributor I place it roughly around a 1952 model my question is simple underneath the tractor on the plate that holds the hydraulic pump there is a plug That comes out over by the muffler I would like to know if I can put a hydraulic hose on there and hook it up to an implement that uses hydraulics if not what is the plug for

    Kirk-NJ    Posted 08-07-2017 at 18:50:34 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8-N hydro question
  • As stated it's a test port, But can also be used for other thing. I have used mine for 711 one arm loader and hyd lift snowplow. It's pressure up and gravity down. Use black pipe not galvanized. Chain down arms or there are other hold down options.

    Kirk

    dave#1    Posted 08-09-2017 at 07:38:12 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • You can also tie a hydraulic pump into the port to give your N live hydraulics,I did to my 50 front mount and works great, Not my idea though Zane sells (or did sell) a live hydraulic kit for the 8n

    TheOldHokie    Posted 08-09-2017 at 09:16:40 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • "You can also tie a hydraulic pump into the port to give your N live hydraulics,"

    That's what you are looking at in the bottom picture of my earlier post. A 10 GPM auxiliary pump and priority flow divider feeding 3 GPM to the test port and returning the excess into the transmission ;-)

    TOH

    dave#1    Posted 08-09-2017 at 17:43:36 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • OOHHHH ok, Nice, Are you using a belt driven pump???

    I was thinking about using a front mounted pump like the ones used for some loaders, That would work wouldn't it ?

    TheOldHokie    Posted 08-09-2017 at 20:06:16 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • I use a belt drive. The shaft drive will work fine. Regardless of how you drive the pump just remember the flow to the test port cannot exceed ~3 GPM or you will overwhelm the OEM valving. That is the reason for the flow divider....

    TOH

    TheOldHokie    Posted 08-08-2017 at 07:47:11 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • IMO a better choice is steel hydraulic tube, steel hydraulic fittings, and/or hydraulic hose all of which are inexpensive and have a working pressure rating of 2000+ PSI. The simplest way to close off that circuit when not in use is a quick coupler - also rated for hydraulic pressures.

    TOH

    Tim Daley(MI)    Posted 08-09-2017 at 15:54:22 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • Dan-
    See my recent post on the OT forum about picture hosting services...

    Tim Daley(MI)

    HCooke    Posted 08-06-2017 at 12:52:08 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8-N hydro question
  • "I would like to know if I can put a hydraulic hose on there and hook it up to an implement that uses hydraulics if not what is the plug for"

    That is the pressure test port and yes you can use it to power other hydraulic cylinders, but you have to chain down the lift arms! There are other ways to power remote hydraulics. Check out Dan Allen's web site (look under 'Products and Services')

    TheOldHokie    Posted 08-06-2017 at 12:51:39 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8-N hydro question
  • The plug is a tee into the lift cylinder circuit and was intended to be a test port for checking hydraulic pressure. The only time there is pressure present is when the 3pt control lever is in the UP position and there is a load on the 3pt arms. The pressure is what is required to lift the load on the 3pt.

    The port can be used as a crude pressure outlet by chaining or otherwise restraining the lift arms in the down position. In that situation moving the 3pt control lever to the top activates the pump and creates full pump pressure at the test port. The chains/restraints also prevent the lift arms from coming to the top which would shut off the hydraulic pump.

    TOH

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