I'm in the planning / dreaming stages for my 2015 2032R for adding rear hydraulics for PB (Power Beyond), TnT (Top and Tilt), mower lift and possible PTO snow blower control, etc. and wanted to inquire for some guidance / input. Based on the excellent information on this site (e.g. Dieselshadow, JeremyFXDWG, Brian from Fit Rite, Kennyd, WVdirtroad, and others) I think I have a pretty good idea of how to proceed in general. So far I've only bought the little plug that enables PB w/ the appropriate hoses. I still need to get the tractor in the garage w/ some heat and snoop around with the rear tire off, but that may wait until the chains come off in the spring.
Stage 1 would be to do the PB as a first step using the DIY 2520 PB post of JeremyFXDWG, but I'd also put in the tank port at the same time (capped). The valve would come as Stage 2.
Though I don't have a backhoe, I'm considering a basic log splitter. Though my hydraulic capacity isn't a lot at 5 gpm, it should give me about a 30 sec. cycle time (and ~15 tons) on the splitter I'm considering. It would be a lot faster than the splitting maul and foot pump splitter I'm using now. One goal is to try to insure the best possible flow / pressure for the splitter. The PB flow will go to / from the rear SCV when not used for a log splitter.
I'm looking at a couple different valves for the rear 3 spool SCV. One from Surplus Center; Prince SV series PB, 3 spools, 2 or 3 float, ranging from about $425+ to $450+, or Bucher using a similar 2 float / 1 reg. DA / PB configuration for about $460 and closer to $500 for all three spools being float capable. Both are nominal 12 GPM capacity manual valves that you assemble using sections. I'm leaning toward the Bucher assuming that the handle orientation can be reversed. Any thoughts as to which valve would be preferable?
I've generally seen recommendations for 3/8" lines for PB lines, though 1/4" lines would generally suffice for QD / cylinder take offs. I'm wondering if 1/2" lines to the initial PB ports Pump / Return done using 1/2" fittings / QD could help maximize flow / pressure. There are fittings available that would enable 1/2" JIC connections to the 3/8" transmission connections. The 'IN' (return) port would have an extra jog to insure enough room for 1/2" hose along with increasing size from 3/8" to 1/2" using a F - M JIC elbow applied to a long 3/8" elbow.
I'm not sure I'd try to use 1/2" for the tank port / valve out connection since I don't think it would generally see the full flow, though I've found a fitting that could be used if it would all fit. I've seen recommendations that a tank return line might need to be larger since the flow velocity will generally be lower than PB lines (10 fpm instead of 20 fpm).
Does this seem feasible / practical to use 1/2" for the base PB lines (up to bulkheads / ports), or would the 3/8" inch lines not have any significant impact on the capacity to a splitter? I've seen a nominal capacity of 7 gpm listed for 3/8" hose lines. Lines from the PB QD / open loop connection points would then drop down to 3/8" to go to the rear valve(s). The path from the tranny ports to the PB ports seem as though they wouldn't twist around that much...
Thanks for any input you may have.