Dave-eng, torch, PoTreeBoy,
Well all I had to do was run one test, connecting the pressure line from the pump to the reservoir refill line coming off the filter.
First I stuck the pressure line into the reservoir refill line and clamped it down, but this made the refill line bow so the fluid wasn't going straight in, yet it held together for a trial run that lasted about 60 seconds before I stopped it.
Then I used a 90 connected to a 1/2" pipe section to connect the two lines together, I screwed the pressure line into the 90 then slipped the pipe into the reservoir fill line and clamped it down so this way the fluid had a straight run into the refill line. Again I started the tractor, both ways the results were the same.
The fluid flowed from the pressure line back into the reservoir with out any problems, but the motor would only rev up to 1200 RPMs. If it doesn't work this way without the filter in between them then it sure would not work if I had connected to the filter to go through.
Something is restricting the motor from operating above 750 or 1200 RPMs, what it is I have no idea but a few guesses.
1. The hydraulic lines are to small, the old lines were all 3/8", I took one from the cylinders, the pressure line and the fill line to the pump for the place who made them to match, which they did. Had no problems working with the old pump as I used them for about 2 to 3 weeks before it cracked. Maybe the pressure line is too small, creating higher pressure.
2. Maybe it's in the plumbing coming off the pump. What was on the pump before was the same 90 as shown in the video, the one that is now leaking, but it was pointing down at a 45 degree angle and connected to the pressure line which made a long sweep down under the front axle group about 4" and it took a beating down there from stuff rubbing against it. I wanted to change it be level with the pump hence the long sweep pipe I put on that you see in the video.
I have made a brush guard out of 1/2" cold roll steel bars to mount in front of the pipe that I planned to put on after I get everything working right, so nothing can hit the hose or pipe.
3. Something is wrong with the pump, to much pressure or something. You can go to Bailey International's website and look up SKU # 118027 which is the pump I have to see the specs.
4. Some how the shafts are not aligning up which is creating stress on the pump and motor. Check out the video as it shows them running in it, they seem to be marrying up good to me. But the Bailey engineer said they would need to be way out of line to cause the motor to bog down.
5. It could be a combination of all of the above, again me guessing.
I even looked at the linkage that works off the throttle to see if it was binding in any way, nope working good. Then there is the controls, I'm not 100% sure they not working perfectly but I need the tractor operating at full speed to check that out. I do know they are not causing the problem of low RPMs since we bypassed them today.
I felt sure by us bypassing the filter that would make the motor open up, but nope it didn't, made a little more power but not full throttle.
OK, guys, anything anyone can think of that we need to do, sing out, I'm all ears.