Oil & Fuel Front axle/ 30 W oil ?

[IH3444]

"So you are arguing with all the mechanical engineers that still use this method then?"

No not at all. The rear differenial of my small case 310 bulldozer uses steel thrust washers, and shims. Guess it is considerated heavy duty, whereas the chinese tractors are for lighter duty? It also recommends straight 75-90w gear oil. Just looks to me that brass would wear and give more readily than steel thrust washers. Rob stated that his KAMA55 didn't have any yellow metal in the front bevel drive gears of his tractor. I guess the transmissions don't take the heavy loads that the final drives do. The final drives in my dozer are large ball bearings, and drive gears. No brass there either....

 

[Soundguy]

I would expect final drives and bull gear to really take a beating.

As for brass on soft chinese steel.. I'd rather have some thrust washers to repalce.. vs other worn steel components..

soundguy

 

[Marc L.]

Good day to all,

80W-90 is probably the best oil for your tranny. You just need to replace it every 9 months or less (due to oxidation of EP additives). It would make sense to replace it this often due to the wear of the gears and brass spacers(who wants the metal filings going around in a transmision?). 80W-90 will also be thicker at the bottom of the transmission, not by a lot but it helps trapping all the muck awy from the gears and bearings.

Synthetic L/O would also give the same good lubrication for probably longer (does not oxidize as fast) and to me it is a problem in itself. By keeping the oil longer, you accumulate more muck in the bottom. Since there is no filters on these transmission, we need to flush the assembly more often. At this point, I find it too expensive for the syn L/O.


Marc