Hello all, After getting a overheating issue fixed on my 1994 743B I have been using it more and have noticed a very loud whine. It only happens when using the left stick, both when turning forward or backwards. But, if I drive straight ahead or straight back no noise, I can use the right stick both forwards and backwards with very little noise. But when I use the left stick it has a a pretty loud grown/whine. It is very noticeable at lower rpms, but at higher rpms it doesn't seem as pronounced. But that might just because of the engine noise. Is this something I should be concerned about? I just seems weird to me that one stick has almost no whine/growling but the other side has much much more. I have to change the hydraulic oil soon as I instructed by the local tractor supply to use AW100 weight which is apparently way to heavy weight of an oil.
