Liquid Power

[MossRoad]

We only do that in hydraulic syrup season.

 

[NJBill]

MR and DieselPower
Thanks for throwing a little humour around, it sometimes help to brighten a boring subject.
DieselPower Stay on board, some of our diesel owners have a little trouble
during the cold spells.

Forgive the pause again, I had to keep a once delayed appointment for my Macular treatment, I believe it's working, anyway back to boring.

So we know that the Wheel circuit just does it's own thing, that it receives the cleanest oil available through a half inch hose, the wheel feeds are 3/8 inch hoses, and the control hoses through the treadle are 1/4 inch. The only thing I missed on the routing is that the FRONT port of the rear motor connects to the REAR port of front motor on it's own side. Oh! and of couse, no part of the wheel system connects directly to the cooler. ( It does on PT's diagram )

Section Three, pretty simple routing for the PTO feed. Oil is fed from the center of the suction feeds, into the LEFT side of the pump and out of the right side, all half inch hose all the way. From the pump into the lower front port of the Solenoid valve and out of the lower rear port. this hose goes directly up the short pipe right side of the lift arms wth a quick connect fitting, The return passage ( already paid for ) goes down the left side arm, and into the #4 port of the tank return section. I have still to check to make sure the suction lines have a stand pipe inside the tank, if not, we are sucking up mucky oil, that's the drain area, I did mention boring didn't I ??

Speaking of PTO, at full throttle, PTO on, my Track Vac well balanced turbine turns about 4200+ RPM.

Section four, with many duties,, starts of almost exactly like the PTO.Out of the tank Left suction port, to the left of the pump out of the right to the Valve Body again, in the front upper port, out of the rear right upper port, hose from the rear left upper goes to #1 tank return. Picture the steering unit from above, althought the ports are on the bottom, the hose from the valve body goes to the left port. the hose from the right port goes to #3 tank return port. The two rear ports feed the steering cylinders, in the case of my owners 422 that's on the left. 425 has one on each side.
Now the front port of the steering box is the feed for the Lift, Tilt, QA,
Sauer-Danfoss valve bank. We've been looking at everything from the aspect of the driver's seat, now we're going to look from the front, it's simple all you have to remember when we talk about the right "X" it's on the left.

I'll be back.

 

[NJBill]

Sorry I have to keep rushing off, I forgot one important thing.
STILL NO COOLER.

 

[NJBill]

WOW

Boring is a mild description, real quickly the last part is of course the sauers-Danfoss valve bank, visible tyhrough threctangular hole in the front wall. looking at the valve, two rows of three ports, Right two feed the lift cyls. Center two to the Tilt. Left two for the QA. Center of the left side port is from the Steering, and in the bottom right corner, end of the line, so to speak is a 1/4 inch hose going to THE COOLER, then from there into the tank return.
THE END. except
The cooler is four ten inch pieces of 3/4 inch tubing fastened equally between two eight inch pieces. Approx 84 fins eight inches by 1 1/2 inches are mounted on the tubes. I'm sure the engineers amongst us can figure the cooling this will offer, I forgot the formula !!!?

This information comes from a hose by hose check of the 422 to prove once again Tazewell relly dont care whether anything they do is right. If you want to believe your hydraulic drawings in your "Manual" go ahead. Your mowers, wheel motors, etc can't possibly be cooled with a layout such as this.
But don't take my word for it, which appears you are not doing.
Sorry I can't invent some thing new for you to chew on. I bought the PT to dig, carry, lift, mow, or whatever as the limbs dictate.
Sorry I wasted so much of your time with my personal satisfactions.

 

[BobRip]

WOW

Boring is a mild description, real quickly the last part is of course the sauers-Danfoss valve bank, visible tyhrough threctangular hole in the front wall. looking at the valve, two rows of three ports, Right two feed the lift cyls. Center two to the Tilt. Left two for the QA. Center of the left side port is from the Steering, and in the bottom right corner, end of the line, so to speak is a 1/4 inch hose going to THE COOLER, then from there into the tank return.
THE END. except
The cooler is four ten inch pieces of 3/4 inch tubing fastened equally between two eight inch pieces. Approx 84 fins eight inches by 1 1/2 inches are mounted on the tubes. I'm sure the engineers amongst us can figure the cooling this will offer, I forgot the formula !!!?

I don't quite understand. Does any hydraulic fluid flow through the cooler and back to the tank? If it does then it will cool the fluid.

I will try to run a test today and see if the cooler hoses are different temperatures. This should give an idea that fluid is flowing and being cooled.

 

[BobRip]

I don't quite understand. Does any hydraulic fluid flow through the cooler and back to the tank? If it does then it will cool the fluid.

I will try to run a test today and see if the cooler hoses are different temperatures. This should give an idea that fluid is flowing and being cooled.

I ran the engine and drove around the propery for about 20 minutes today. The hydraulic reservoir only got to about 85 degrees and the fan never started. The heat exchange was 120 degrees at both ends. I think it was picking up heat from the engine. The fan never started. Extra cooling is not needed at 40 degrees.

I traced one oil cooler line to the wheel circuit pump, just as shown on the diagram. It ties into the pump through a block with the fan thermostat on it. I believe this is an outlet of the tram precharge pump. So what they are doing is circulating some of the wheel motor fluid through the oil cooler. This seems reasonable to me. I could not trace the other line.

 

[J_J]

WOW

Boring is a mild description, real quickly the last part is of course the sauers-Danfoss valve bank, visible tyhrough threctangular hole in the front wall. looking at the valve, two rows of three ports, Right two feed the lift cyls. Center two to the Tilt. Left two for the QA. Center of the left side port is from the Steering, and in the bottom right corner, end of the line, so to speak is a 1/4 inch hose going to THE COOLER, then from there into the tank return.
THE END. except
The cooler is four ten inch pieces of 3/4 inch tubing fastened equally between two eight inch pieces. Approx 84 fins eight inches by 1 1/2 inches are mounted on the tubes. I'm sure the engineers amongst us can figure the cooling this will offer, I forgot the formula !!!?

This information comes from a hose by hose check of the 422 to prove once again Tazewell relly dont care whether anything they do is right. If you want to believe your hydraulic drawings in your "Manual" go ahead. Your mowers, wheel motors, etc can't possibly be cooled with a layout such as this.
But don't take my word for it, which appears you are not doing.
Sorry I can't invent some thing new for you to chew on. I bought the PT to dig, carry, lift, mow, or whatever as the limbs dictate.
Sorry I wasted so much of your time with my personal satisfactions.

The observations that you made of the hose layout is probably correct. The wheel motors and pump, are in a closed loop system, and I believe that the case drains of the wheel motors and pump go to the cooler and then tank. If any one line is pushing fluid through the cooler, then the tank oil is being cooled. The amount of oil that can be forced through the cooler could be limited by the size and strength of the cooler, which I am sure that it is low pressure.

Don't be too concerned by what people think. Your effort and diligence in this area is much appreciated. Just state the facts as you know them.

 

[MossRoad]

I ran the engine and drove around the propery for about 20 minutes today. The hydraulic reservoir only got to about 85 degrees and the fan never started. The heat exchange was 120 degrees at both ends. I think it was picking up heat from the engine. The fan never started. Extra cooling is not needed at 40 degrees.

I traced one oil cooler line to the wheel circuit pump, just as shown on the diagram. It ties into the pump through a block with the fan thermostat on it. I believe this is an outlet of the tram precharge pump. So what they are doing is circulating some of the wheel motor fluid through the oil cooler. This seems reasonable to me. I could not trace the other line.

I start mine up at 0 degrees and let it run for 10 mintues, then take off and plow. The reservior is hot to the touch after 15-20 minutes. And a few years back after a series of very heavy snow falls I noticed the cooling fan come on a few times after 30-40 minutes of plowing. I even put a magnetic heat duct diverter from my house over it and directed the heat toward the front. Every time I backed up I was treated to a nice blast of warm air from the hydraulic cooler.

 

[MuncyBob]

I have frequently run the PT at sub freezing temps and have noticed the cooling fan does not come on for at least 35+/- minutes of constant running. I would imagine the time it takes for the cooller to kick in will be determined by a combination of the ambient air temp and also the usage of the PT. My usage in the winter is primarily running buckets of manure from the "barn pile" to the "dump pile" which are apprx. 200 yards apart.

I have learned to drive in reverse at full speed very well! LOL!

 

[BobRip]

I even put a magnetic heat duct diverter from my house over it and directed the heat toward the front. Every time I backed up I was treated to a nice blast of warm air from the hydraulic cooler.

I like that. Can you show a picture or link?