Circulating hydraulic fluid

[Chooglin]

I have a GC2310 and I was wondering , after I start the tractor and put the loader in the float position,
Will this permit the fluid to circulate thru the lines during the warm up period or does it circulate regardless
Of it being in float position ?is this a good practice to follow or does it not make any difference ?

 

[J_J]

The fluid is not flowing into the float spool. Fluid is flowing through the valve for other spools/valves Float mode allows the work ports to open to tank so the cyl can push or pull fluid and therefore float, following the conture of the ground. .

No big difference in flow whether in float or not.

If you are trying to heat the fluid, hold the lever to max and the fluid will flow over the relief valve heating the fluid.

In an open center hyd system, the fluid is always flowing from the pump through all valves to tank.

 

[Chooglin]

Thank you for the reply and great explanation !!!

 

[Industrial Toys]

Will oil heat up to any appreciable degree just making that circulation in an open centre system?

Will a hydro make any heat at neutral swashplate angle?

 

[J_J]

Sure, just about any fluid in motion will generate heat.

The walls act as a restriction, and 90 elbows and other fittings offer restrictions.

If components are designed correct there will be less restrictions.

The fluid should not heat past the designed settings.

Hyd fluid should stay below 200 degrees.

Quote:

Oil operating temperature should not exceed 200° F. (93° C.) with a maximum of 180° F. (82° C.) generally
recommended. 120° F to 140° F. (50° C. to 60° C.) is generally considered the optimum system operating temperatures. High temperatures result in rapid oil deterioration and may point out a need for an oil cooler or a larger reservoir. The nearer to optimum temperature, the longer the service life of the oil and the hydraulic components

 

[oldnslo]

Will a hydro make any heat at neutral swashplate angle?

Yes, they will generate a small amount of heat since the charge pump is always dumping oil at the charge relief pressure.

 

[J_J]

I agree with oldnslo about the charge pump, as my variable speed pump will use the charge pump fluid to not only keep the closed loop hyd circuit, and flush the pump casing and send it back to the hydraulic radiator with fan to help with the cooling.