Drilling Rear Axle for Venting

[old splicer]

Do the 42-47 open drive commercial rear ends have a vent?

[36tudordeluxe]

Originally Posted by JSeery

Only if you don't want water/dust in the axle.

Edit: Well, that was a rather poor answer! First off, I miss-read it, thought you said "do I need a vent hose and filter". Sometimes I wonder about my reading skills. I am doing to have to stop attempting to do several things at once, that's for sure.

Where the vent hose goes is not important, it is normally routed up near the top of the frame and flooring and looped back down a little. The idea is to limit water getting into the axle. It needs to have enough slack in it so it can move with the axle. Filters are not necessary as there is not that much actual movement of air through the vent hose, mostly a pressure relief. However, some people like the extra margin of security a small filter provides.

Will run hose as you suggest, thanks.