iceman said:Speecotech said:iceman said:Speecotech said:Gooserider said:I would see the suction side filter as a MAJOR design flaw - my earlier comment was made before seeing those photos... Otherwise it still looks like a good unit, but a suction side filter is IMHO a great way to destroy a pump by causing it to cavitate, not to mention that putting the filter below the oil level like that is likely to make if very messy and difficult to change the filter without dumping your hydraulic fluid... Incidentally, cavitation can cause a lot of vibration as it eats the pump internals...
I don't know who came up with that design but it is really screwy, as Speeco / Huskee generally knows what they are doing and uses sound design concepts.
Note, this is something that CAN be fixed for a not unreasonable sum of money... It would need a replacement suction line (or possibly a length of pipe and some fittings) possibly a filter and head (depending on whether the existing one can be re-used as a return side filter) and a new, shorter, return line - if one got the parts from a local hydraulic shop, $100-150, maybe $75-100 on-line...
I really can't think of ANY circumstance where I'd want to see a filter of any sort between the tank and the pump. Most common filter location is in the return line to the tank, which is low pressure, and quite an effective location on any sort of equipment. There are some sorts of equipment (not log splitters) that require ultra clean fluid going into some of the valves and such, and for that equipment a pressure side filter in the high pressure line can be effective, though such filters tend to be VERY expensive because of the need to operate under full system pressure.
The other thing that I have recently changed my opinion on, is that you are best off with a manufactured, swaged end, return line (albeit a low pressure rating (~200psi minimum) is all that's needed) rather than a length of plain hose between hose barbs and held on w/ hose clamps... I can't tell from the pictures which you have on that unit...
Gooserider
Gooserider, as always you have some great comments to add to the thread. In response to your concern about the design, our splitters that are designed to run with the oil filter on the suction line, do not cavitate. We designed the filter and filter base to allow enough fluid through so as not to stres the pump or otherwise cavitate the fluid. If the fluid were cavitating, you would notice a loss of performance as well as excess heat and foam in the tank when you open the fill cap. We recently changed our design on the Huskee models. On the newer Huskee models, the filter has been moved and the filter base setup and filter have been adjusted accordingly to allow for a diff. pressure and different flow rate. There is a check vale inside the filter bases which allows fluid to bypass the filter in periods of extremely high flow rate, or rushes of fluid (when the valve returns to the neutral positon). These units use a different style filter base when attached to the supply side which allows fluid pass with out cavitation. I hope this clears things up a bit.
The 28 and 34 ton the filter has been changed to the return side??? or am i reading this wrong? please excuse me
On the 22, 28, and 35 ton Huskee models it has been changed, yes.
ok i am confused now... the newer models huskee has the filter now on the return side? so does this mean that there is some validity to what goose was saying? (that it is better to have them on the return side) not trying to be an @@$ but if what you described earlier, why would you change over if what you were doing is ok??
Again, there are two schools of thought as to which way is better. We've been using supply side filtration for the last 30 or so years and there are no problems doing it either way if engineered correctly.. The reason for the change had nothing to do with functionality, but more to do with accesibility of the oil filter. On our older units if you wanted to change your filter only and not the oil, you would have to drain the oil to do so. I will reiterate that there are two schools of thought and Goose has received information from one school of thought and some of his points are valid. Again, it all has to do with how you design/engineer the machine and whether it is built correctly. We have also changed to a horizontal shaft motor with a sidemount pump. In this alternate design, both pump and filter are higher up and more protected from anything the splitter might run over while towing. I hope this clears things up?