Tractor hydraulic system delivers 3.7 GPM @ 2700 engine RPM. That is adequate for a loader if you do not oversize the cylinders.I plan to build a loader attachment for my L175. My question is. Can I utilize the hydraulic pump that operates the 3pt lift ? Or should I ad a stand alone pump to the front of the engine?
thanks
Mike W
Would you send pictures of how it is piped to the ex pump ?Got a loader on my L175, works great and reasonably fast with the existing pump.
I don't have any problem lifting up an over filled bucket of caliche.
The valve is connected to the tractor hydraulic system with a outlet block installed on the rear top cover. It provides pressure out to the loader valve and pressure return for the operation of the 3pt hitch. You also need a third tank return - typically to the hydraulic filler on the transmission. Picture is from the B1730 loader parts manual.Would you send pictures of how it is piped to the ex pump ?
mwood1119@msn.com
I don't have an exterior pump.Would you send pictures of how it is piped to the ex pump ?
mwood1119@msn.com
Some hard data:Front pump would be my vote... fast isnt something my old man's l245dt loader is. Woods loader on it, ran off the pump in the tractor. Very very slow.
I meant how it’s tied to the existing hydraulic linesI don't have an exterior pump.
I gave you that information. You tie into the hydraulic circuit using the hydraulic outlet block under the seat.I meant how it’s tied to the existing hydraulic lines
I haven't timed the old man's loader, but I do know it has 2"x18" cylinders. And 4 secind lift cycle time would be great. It's way, way, slower then that. Guess I should look into that if the 175 has that sort of cycle time.Some hard data:
- The factory B1730 loader uses 1.5 x 18 lift cylinders. Total volume of 2 cylinders is just under 65 cubic inches.
- The L175 delivers 3.7 GPM = 855 cubic inches per minute.
- Lift time to full height is just under 4.6 seconds.
- The LA525 on a new L2501 will do that in 4.1 seconds.
- My L3901 has a slightly larger pump and will do it in 3.5 seconds.
I have a nearly identical B1630 loader on a 4 GPM B7200 and lift time on it it works out to 4.2 seconds. That is not screaming fast but I never felt it was a problem in the 30 odd years I have owned it. Obviously quicker would be desirable but adding an external pump and reservoir is lot more work and expense. It also complicates things considerably if the loader is a quick detach design.
Dan
As I said earlier size of the cylinders is going to determine the cycle time and seemingly small increases in cylinder bore have a very large effect. Simple arithmetic:I haven't timed the old man's loader, but I do know it has 2"x18" cylinders. And 4 secind lift cycle time would be great. It's way, way, slower then that. Guess I should look into that if the 175 has that sort of cycle time.