Does anyone have experience with using a fluid cooler on OC-3 or 4 differentials? An automatic transmission type cooler could be used but what kind of pump should be used?
Why would you need a cooler? Does it build up heat? then mabye you got somethings wrong in there.
Why would you need a cooler? Does it build up heat? then mabye you got somethings wrong in there.
My A-model Spryte uses the same differential as my OC-3. I think the Spryte pushes the diff closer to its design limits. Occasionally it gets hot enough for the steering to get soft. A cooler would solve this if I can figure out how to circulate the oil.
NASCAR cars use a (extremely expensive) pump driven by a pulley on the rear U-joint to cool the diff. Maybe you could dream up something using a small hydraulic gear pump.
If you have a rear pto unit, you shouldn't have a problem running a small circulator off either the pto or side pulley and a small cooling fan and chiller unit could be mounted on a rear frame as well. Depending on the viscosity used (assuming 90 wt GL-1 in summer), any good hydraulic pump that can circulate 9 quarts per minute should suffice.....but take the back pressure created by your chiller into account. Good luck.