rear axle service

[freebird]

I changed my crankcase oil and tranny fluid yesterday (yuk) and got to looking at the rear and saw the 2 hex plugs on the rear axles. I looked in my manual and it says to use hy-tran....same as what it lists for my touch control resivouir...it also lists 90 weight, like used in the tranny. I think it would be best to get some 90 wt as I don't have enough left from yesterday's service. I don't get hy-tran out here but use farm and implement hydraulic fluid in the t/c. opinions, suggestions?

[Bigdog]

Terry - my personal preference is for 90 wt. But I'm old fashioned. If you're going to change the fluid, you will need to drop the pans to drain them.

[freebird]

I am gong to opt for the 90 wt too....if hydraulic fluid is not supposed to get into the crankcase (via shot o-ring on pump) I don't want it to lube gears either. just makes sense to me.
I'm starting to suspect that is where that clicking sound I heard last week is coming from. I'll update when i get it done. Hope no damage done.

[Donny M]

If you're getting a "clicking" noise, check the bolts that hold the wheel center to the rim. That same thing drove me crazy for a bit

[freebird]

The bolts will be coming out....My new rear 9.5 x 24 tires will be here tomorrow!

[Jim Becker]

I am gong to opt for the 90 wt too....if hydraulic fluid is not supposed to get into the crankcase (via shot o-ring on pump) I don't want it to lube gears either. just makes sense to me.

Temperature requirements for engine oil are a lot different than a transmission. Transmissions typically run cooler than the hydraulic system.

Moisture conditions are a lot different as well. If you get an engine warmed up, it will drive a lot of moisture out. Doesn't happen in the transmission.

[freebird]

That makes good sense George. now I'm clear.