Hose Connection question

[woodlandfarms]

Hey guys real quick. Just making sure that I or someone else has not made a mistake.

WHEEL MOTORS.

I thought that the tube that went to feed the other motor crossed over. Meaning Pump to Left Front Wheel. Left Front Wheel to Right Rear Wheel, Right Rear wheel back to pump.

But for whatever reason mine is Pump to Left Front Wheel. Left Front Wheel to Left Rear WHeel the Left Rear Wheel to Pump.

As I have to run new hoses tomorrow, wanted to make sure that what I have is correct.

 

[cqaigy2]

I don't see why that wouldn't work, but maybe one more sanity check with Terry?

 

[SpringHollow]

I believe people have posted that their tractors were plumbed both ways.

Ken

 

[ponytug]

Mine is plumbed that way, plus a small L<->R crossover hose. Terry said something along the lines of that was the differential function.

All the best,

Peter

 

[woodlandfarms]

What is crazy is that I have the master hose chart. I had the two replacement hoses cut to spec. THey are at least 1.5 foot too long. I measured against the original which were too tight and yeah, there is over 2foot of difference.

 

[MossRoad]

Hmmm.... Mine are catty-cornered. I always assumed that's the way they all were, and its the only way it makes sense to me as to why the LF and RR can turn in one direction while the RF and LR can turn in the opposite. Anyhow, best to check with Terry, as always.

 

[woodlandfarms]

I just kept them the same but will call Terry.

 

[woodlandfarms]

Finally found time to talk to Terry. He says on the 1850 it is Left to Left and Right to Right.

 

[MossRoad]

Interesting.

 

[KentT]

That plumbing arrangement only makes sense. Both inside wheels need to travel a far shorter distance in a turn than the two outside wheels - plus the front and rear wheels on each side must travel the same distance. The fluid directly exits one wheel motor (front, I assume) and enters the other (rear, I assume). Fluid going to the rear wheel must come through the front - there's no diverter or bypass. Each wheel "consumes" theoretically half the pressure in that circuit, but the volume they receive is the same (less the tiny amount that may have escaped through a case drain, if you have them).

The additional fluid required by the outside wheels must flow somehow from the circuit to the inside wheels, either by a crossover hose or inside a manifold connection somewhere before the first wheelmotor in the circuit. The fluid will flow to the point of least resistance - the wheels on the outside of the turn.

If the left front wheel and the right rear wheel were connected, and vise versa, it would be impossible to turn, since both would turn at the same speed. There would need to be an additional crossover hose or manifold in this "X" arrangement, and it would have to be in the center of the X between the front and rear wheels. If there was such an additional crossover or manifold, then all four wheel motors would then function totally independently, with no "positrac or limited slip differential" kind of behavior. You'd be much more likely to be spinning one of the wheels somewhere in low traction conditions, with no way to stop it. It would be far simpler to plumb it with two separate 1:4 manifolds, one each for the input and output lines.

Plumbed like woodland farms described - at least the other wheel on the same side as the spinning one must turn at that same speed. You still have some motive power.

At least that's how I understand it... two parallel circuits with two wheel motors in series on each circuit.