L175 loader attachment

[mwood1129]

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

 

[Russell King]

The existing pump will work but not that well. It is too small

You can rig one to front of the engine or off the pto

 

[In Utopia]

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.

 

[Roadworthy]

The pump used for the three point is usually sufficient for the loader.

 

[TheOldHokie]

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

Tractor hydraulic system delivers 3.7 GPM @ 2700 engine RPM. That is adequate for a loader if you do not oversize the cylinders.

Dan

 

[mwood1129]

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.

Would you send pictures of how it is piped to the ex pump ?
mwood1119@msn.com

 

[Dieseldonato]

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.

 

[TheOldHokie]

Would you send pictures of how it is piped to the ex pump ?
mwood1119@msn.com

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.

Dan

 

[In Utopia]

Would you send pictures of how it is piped to the ex pump ?
mwood1119@msn.com

I don't have an exterior pump.

 

[TheOldHokie]

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.

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

 

[mwood1129]

I don't have an exterior pump.

I meant how it’s tied to the existing hydraulic lines

 

[TheOldHokie]

I meant how it’s tied to the existing hydraulic lines

I gave you that information. You tie into the hydraulic circuit using the hydraulic outlet block under the seat.

Dan

 

[Dieseldonato]

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

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.

 

[TheOldHokie]

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.

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:

• Cross sectional area of a 1.5" cylinder = (1.5/2)^^2 x 3.1416 = 1.77 square inches
• Cross sectional area of a 2.0" cylinder = (2.0/2)^^2 x 3.1416 = 3.1416 square inches
• Ratio of cylinder areas is 3.1416/1.77 = 1.78

Consequently lift time on a two inch cylinder is almost 75% greater than a 1.5" cylinder but develops 75% more lifting force.

Dan