12-06-2017, 12:29 PM
Join Date: Aug 2015
Location: Glendale, AZ
It's not so much a valve, rather it's just supposed to be an open hole that restricts water/dirt from entering the axle while still allowing any pressure to escape.
The idea is that the cover stays down to prevent stuff from going in, while able to pop up to let air out. Kind of the same idea as exhaust flapper valves seen on semi trucks, bulldozers, farm tractors, etc (may be different in Israel, but I'm sure you have some kind of equipment over there with the flappers on the exhaust pipes)
It is pressed in to the axle, but it's unlikely that you'll be able to remove it without damaging it. In my case, I pulled them out of both the front and rear axles, the transmission, and the transfer case, then threaded the holes for barbed pipe fittings, and connected a hose to those fittings with the other end either in the engine compartment or up near the top of the roll bar, with a breather filter on the end. Some people have just pried the cap off, then connected the hose to the nipple that's left over. You should be able to stick the little tube on a can of spray cleaner down in there at that point.
1987 Samurai - SOA, 31s, 2.0L swap, ZOR bumpers/cradle, 6.5 t-case gears - rock crawler
1990 Ford F350 CCLB DRW 4x4 7.3L Banks turbo - tow pig
1959 International B-162 - future heavy hauler
1986 Chevy K5 - 489/4L80E/35s
Last edited by urbex; 12-06-2017 at 12:31 PM.