Debmar Posted August 5 Share Posted August 5 Want to swap a 3rd lift cylinder from a parts combine to a 1680 with only 2. I need a T to put into my hydraulic lines under feeder house but would like to have the parts on hand prior to doing so . Can’t use the parts from the parts combine as they are set up differently and just getting a T will be easier. I never know right name or term for different hydraulic fitting types. What type of hydraulic fittings are used on these combines so I can just ask the hydraulic shop for what I need. usually i would just take example with me but it would be cleaner to just have what i need there when i dismantle the existing line Thanks for the help. Martin PS: any good link or resource suggestion to maybe print and hang on wall in the shop to enable us to learn the different types? Quote Link to comment Share on other sites More sharing options...
supermechanic Posted August 5 Share Posted August 5 https://www.parker.com/Literature/Hose Products Division/Catalog 4400 PDF Files/HPD_4400_Catalog.pdf check out the section on fittings. Quote Link to comment Share on other sites More sharing options...
supermechanic Posted August 5 Share Posted August 5 There is a pull-down menu on the left. Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted August 5 Share Posted August 5 2 hours ago, Debmar said: What type of hydraulic fittings are used on these combines so I can just ask the hydraulic shop for what I need Unfortunately, all of them. It could be ORB (o-ring boss), JIC (37 degree flare) or NPT (national pipe taper) and then any of three different sizes of each. For example, the cylinders on my 2350 loader are ORB at the cylinders, convert to JIC in the elbow connected directly to the cylinder, and has NPT threads on the ends of the hoses with the coupler nipples. Yup. I just checked the parts book and they use ORB at the cylinder itself, into an elbow that converts to JIC. The book calls it "3/4-16" which I believe is actually "half-inch hose" or "dash 8" sized fittings. Also according to the parts book the port for the third cylinder should already be there. The cap labeled "12" on this diagram: Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted August 5 Share Posted August 5 I guess the late serial numbered ones are a little different. Still should have the tee already in place, just remove the cap: ...and this is the part you need if it is not there: https://www.discounthydraulichose.com/6602-08-08-08.html Quote Link to comment Share on other sites More sharing options...
HydroTek Posted August 5 Share Posted August 5 That 3rd cylinder was connected to the accumulator , to act as a spring Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted August 5 Share Posted August 5 10 minutes ago, HydroTek said: That 3rd cylinder was connected to the accumulator , to act as a spring The accumulator is connected to all cylinders at least it is on my 1400 series combine and Deere's Quote Link to comment Share on other sites More sharing options...
HydroTek Posted August 5 Share Posted August 5 Check again -- the 3rd cylinder is connected to the accumulator -- not the other 2 there is valving under the cab behind the wheel to set the function of that 3rd cylinder and accumulator Adding a 3rd cylinder into the existing circuit will slow the head lift by 1/3 Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted August 5 Share Posted August 5 Must be on the later combines because 1400 series combines have all cylinders from the accumulator for header float Same on Deere's too Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted August 5 Share Posted August 5 Parts book does not show an accumulator (EDIT: SPECIFICALLY FOR THE THIRD CYLINDER) on any of the diagrams. Only difference with the serial breaks is the combination of fittings used. Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted August 5 Share Posted August 5 ...and the early ones: Quote Link to comment Share on other sites More sharing options...
ksfarmdude Posted August 6 Share Posted August 6 Sure looks like all cylinders are on the same line to me and anytime you have an additional cylinder its naturally going to lift slower because it displaces more oil but for the accumulator to work properly they all must be on the same line Quote Link to comment Share on other sites More sharing options...
Debmar Posted August 6 Author Share Posted August 6 Somewhere in the past i guess someone messed with the setup on my 1680 with only 2 cylinders as there is no existing capped T . donor combine is set up that way and matches diagram. The 2 cylinder machine definitely responds faster than the 3’s which makes sense but it is also weak and unable to fully lift a 30’ 1020. The 2 is actually a problem when using auto header height control and too much response too quickly. thanks for responses, that will help me figure out what i need after some more digging into it. but i think the one link indicated looks like the correct T Quote Link to comment Share on other sites More sharing options...
Matt Kirsch Posted August 7 Share Posted August 7 19 hours ago, Debmar said: Somewhere in the past i guess someone messed with the setup on my 1680 with only 2 cylinders as there is no existing capped T . There was one iteration of the 2-cylinder setup that I missed in the parts book, which does not have the capped tee. It's the version with the hose supplying the cylinders all the way from the valves. No hard lines. Quote Link to comment Share on other sites More sharing options...
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