HOARDER
New member
First off let me say hi to everyone, I am new here. I read this post yesterday and decided to join because when I have questions or am unsure of things, it seems like I cant get a good answer from dealers or other people in my field. I am a mechanic/equipment manager at a 150 acre country club and regularly have to modify, build, or customize things. Anyway It was awesome I found this post because just last week I started to form a plan to put power beyond on the 1997 JD 5300 4X4 tractor. The 5300 has 2 SCV valves and a joystick control with the only detent being a float detent. The reason I want to add power beyond is we just bought a implement that consists of three hydraulic motors and two cylinders, Its a material handler, basically a conveyer belt in a dump box with two rotating broadcasters. To run the MH (material handler) I don't want to bungee the joystick to hold a SCV open. I also read (IMPORTANT: If hydraulic orbital motors are used without power beyond connections, the hydraulic oil will overheat. ) on this link I found yesterday... OMRE71736 C0: 5210, 5310, 5410 and 5510 Tractors, Block File: LV_5010RC_H_19_12NOV99.htm .So anyway the book shows you put the plug in the SCV but their system shows a flow control with two returns, one to sump and one two return. I don't want a flow control, I have a open center valve with detent I want to plumb in the loop from the SCV ( the pressure and the return) and the two work ports from my valve will go to couplers. My problem was do I send the oil back to the tractor via sump fitting or return fitting on SCV so I called the dealer...... Dealer tells me about the ''power beyond kit'' and tells me its $2700$ Obviously I will not buy that! So I tell them what I want to do will cost me about 300 bucks and just want to know whether to use sump or return fitting because I dont understand having two ways to send the oil back. Guy #1 says that's way over my head and sends me to guy #2, #2 shows me a splitter valve that's coil actuated I say no and explain again hearing that's over my head. #2 sends me to #3 the service manager. Tell #3 the plan and he pulls up stuff on the computer and says how about a 3rd SCV with detent. #3 and I go look at one they just put on a 5210 (I think) so I ask if its a float detent and he calls over #4 the one who installed it and he says he doesn't know and it didn't say in the instructions! #3 and I go back to the computer and yes its a float detent not what I want! Also its 800 bucks not including install! #3 and I now go talk to #5 a good mechanic and he seems to understand, but tells me the 5300 isn't really a commercial tractor and the hyd system is really just for stroking cylinders not running hyd motors like on my MH, and it could over heat the system. #3 #5 and I discuss things and agree what I want to do should work with some uncertainty which port to use to send oil back (MY INITIAL QUESTION!!). Ultimately decide I should use return and IF flow is good and works stick with it and don't use sump. Still confused until yesterday when I read jd110 explanation a few posts before this. THANK YOU jd110 my brain was hurting . All of you guys are very helpful and intelligent but reading that really helped. Here is my actual question if anyone can help assuming you would read my horribly long post and get to this point, Is the return port going to be restricting any flow? And if the sump port is used does it not get filtered by the return filter? One more thing to add to anyone attempting similar is the SCV threads and o-rings are metric and adapt to #10 ORFS on my application, The adapter fittings do NOT come with the o-rings!