Ford 345C Hydraulics

jgbanshee · Nov 29, 2006

I have read that hydraulic PTO pumps are preferred for backhoe attachments rather than remote hook-ups. My 345C has a 26 GPM pump for the loader. That is way more than the a 10-12 gpm pump on the PTO. Is it possible to get that pump to pump fluid back to run to a backhoe attachment?

Opti-Mist · Nov 30, 2006

Yes, plenty of capacity. The loader control valve should have a power beyond port from which to supply oil to the backhoe control valve. However, if you are considering a 3-point hitch type of backhoe, the PTO pump is quite adequate for that purpose and makes for faster mounting and dismounting.

jgbanshee · Dec 3, 2006

How do I know if the loader valve has a Power Beyond port on it? And if it does, do I remove the hose and insert a T fitting inbetween?

Opti-Mist · Dec 10, 2006

Go to Yesterday's Tractors - Discussion Forum

MadReferee · Dec 10, 2006

jgbanshee said:
How do I know if the loader valve has a Power Beyond port on it? And if it does, do I remove the hose and insert a T fitting inbetween?

No. You cannot tee into the power beyond circuit. Valves must be connected in series so the backhoe valve must be in series with the loader valve and the 3pt. The power beyond port must be connected to the inlet of the next valve.

dqdave1 · Dec 11, 2006

PTO pumps may be preferred do to the simplicity of installation. Attach backhoe, attach pump to PTO shaft; use backhoe. Very easy. That is why I went the PTO pump way. Plus when I sel the backhoe unit; It is a complete unit for the next owner. Northern sells PTO pumps for around $400.00

jgbanshee · Dec 21, 2006

I plan on buying some steel tubing real soon but I cannot determine what thickness I will need for the hydraulics system. I am guessing that the pressure is somewhere around 2500 psi. Does anyone know if that is correct?

MadReferee · Dec 22, 2006

jgbanshee said:
I plan on buying some steel tubing real soon but I cannot determine what thickness I will need for the hydraulics system. I am guessing that the pressure is somewhere around 2500 psi. Does anyone know if that is correct?

Take a look HERE. You need to purchase high pressure steel hydraulic lines that are sized for your flow. I don't believe that automotive brake lines are sufficient. The chart gives flow at a velocity of 20 ft/sec.