Pump Pix and Hose List

[Wayne County Hose]

Andy,

Answer a question for me please, I can not keep this straight. Which of the Quick Disconnects is supposed to be the pressure or output, or source, male or female and why. Is there an industry standard. Consider this, on a set of hyd remotes, you have a set of male and female QD's as the source, and then you plug in a set of male and female QD's, which become the source for the hyd motor. Confusing isn't it.

Honestly, I don't know. I do have quite a bit of hydraulics schooling and experience. Most of it is on forklifts. There aren't really too many q.d.'s on forklifts. The rest of the theory is the same, so most of this is the same. When you get into stuff like this that isn't on forklifts or I don't have experience on, I really just don't know. I will do some research today and hopefully find out.

I could show you hydraulic and electrical schematics that are pages long. Some pumps will run up to 5 different functions.

 

[Wayne County Hose]

You betcha. Plans for my tractor are on a chalk board in the warehouse.


Wayne, post some pix of your plans for your new house.

How do you post pics? I have the drawings from the architect and am getting the blueprints today at 3:00. Kind of funny, I have a degree in electronics. I can take this computer apart and tell you what every part does. When it comes to the programming end of it, I guess my brain just isn't wired right for it.

I guess what I was wondering was if that exact hose list, handwritten, came from Power Trac.

 

[Marks481]

In the reply window, push the "manage attachments" button.

It will open an upload window, that will allow you to browse to a file, then push the "Upload" button.

 

[Bob999]

Attached are hydraulic circuit drawings from the manual for the 1845.

Hope these are of use.

 

[woodlandfarms]

Wow Bob. Thank you...

Oddly enough my 1850 is very different from these schematics. Maybe due to going to the Hydraulic treddle things changed.

 

[Wayne County Hose]

I tried to upload a pic, was told that my file of 1.01mb was too big. 1000kb is file limit.

 

[woodlandfarms]

If you had a mac, I could talk you through how to reduce the size of the picture. This is a pretty common issue. Someone with a PC can probably give you a quick shortcut to reducing images size...

 

[Rivco]

Heres a link for a great picture resizing program. Its free.

Download free software : useful Windows utilities, all freeware

Download Pixresizer

 

[J_J]

High pressure is difficult to tell, but I think it is from the lift pump

Going from furthest to closest to the engine

Lift and steering (I think) circuit - winds its way around to the PTO Activator (RPS Valve is its pro name). Then out of the RPS into the high pressure filter then to the accumulator / charger.

Second pump back is PTO. Runs out of Pump to RPS Valve. There is a disconnect for me... I see two outputs one back to the tank and one to the PTO. There is a release valve that if the PTO is activated and nothing is hooked up it dumps back to the tank. Not sure what happens when it is not "activated"

The third pump looks to be a closed loop of sorts. Operates the tram.

Now here is a mystery question. If the only oil getting back to the tank is off the case drains, then how in the heck is any of the oil getting filtered. On the 1850 it is out from tank to low pressure filter and then to the bottom of the Tram pump. The only additional hose is on the left side and it is the pressure for the treddle.

Anyway...

Supposed to get full hydraulic diagram from Terry on Monday...

Carl

Carl, let me see if I can answer your question about what is filtered. There is a collection point on one of the manifold blocks, that collects any oil from the case drains of the wheel motors. This manifold also collects oil from the tram pump case drain, This total amount of oil is then sent to the cooler and back to tank. So what is filtered. The purpose of the charge pump is to keep up pressure , about 300 to 600psi on the low pressure side of the pump. Since the tram pump is a closed system, the charge pump will provide any makeup oil lost through the wheel motors, and the tram pump. I believe that we are only filtering about 3 to 5 gpm. Since you have a 20 gal tank, you could filter about 240 gal per hour. Charge pumps are designed to pump about 10 percent of the tram pump volume. The lift and steering oil and the PTO oil is used and sent back to tank. All or most of the oil in the tank will eventually get filtered.

You mentioned that the high pressure filter was before the brake accumulator. The only purpose I can see why it is located there, is to prevent any crud from getting into the brake system. Any filtering is good, but could get expensive. If I had to build and maintain a hyd system, I would have filters in each system, which would further isolate crud from contaminating other parts of the system. Separate tanks would be even better, but that would take up more space and make the system to expensive.

I still think that your tram pump has a case drain. That would be the only way to cool the oil from the tram pump. also, the oil coming from the wheel motor case drain is caring heat away from the motors.

Another condition that causes heat builds up is when the relief valves are going off, and when you are using the bypass valve to tow the PT, heat will build up rather quickly.

 

[J_J]

Andy,

Answer a question for me please, I can not keep this straight. Which of the Quick Disconnects is supposed to be the pressure or output, or source, male or female and why. Is there an industry standard. Consider this, on a set of hyd remotes, you have a set of male and female QD's as the source, and then you plug in a set of male and female QD's, which become the source for the hyd motor. Confusing isn't it.

I may have an answer to my question by looking up data on the Internet. It seems that the pressure outlet is male, and the return side is female. The data goes on to state the correct procedure for QD hook up.

To couple, always connect the return hose first then pressure.

To decouple, disconnect pressure first, then return .

The tool apparatus or motor input should have a female QD, and the return side should have a male QD.

I believe this data is correct, but I still don't know why.

It maybe that the pressure inside the hose will aid in removing the QD.

If anyone has a better answer, please post your reasoning.