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Old 11-27-2017, 04:19 AM   #1 (permalink)
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Default Pressure valve on the back diffrential

Dear Friends.
I notice i get some signs of oil in the dram. The brake clamps are O.K. so it come from the back axle oil seal.
Before put a new one I was told that some time if the pressure valve on the axle is block with mud it could press the oil seal and some oil can get out this way.
I see the valve on the back differential, and it has a cover over it taht can move up and down by hand. But I can't see any nut to open and take it out and I can't pull it up. I attach a picture.
1. Is the oil leakage can be cause by the valve?
2. How can I take this valve to clean?
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Pressure valve on the back diffrential-pressure_valve_close_view_compress_mark.jpg   Pressure valve on the back diffrential-pressure_valve_main_view_compress_mark.jpg  
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Old 11-27-2017, 04:30 AM   #2 (permalink)
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Quote:
Originally Posted by barstrauss View Post
Dear Friends.
I notice i get some signs of oil in the dram. The brake clamps are O.K. so it come from the back axle oil seal.
Before put a new one I was told that some time if the pressure valve on the axle is block with mud it could press the oil seal and some oil can get out this way.
I see the valve on the back differential, and it has a cover over it taht can move up and down by hand. But I can't see any nut to open and take it out and I can't pull it up. I attach a picture.
1. Is the oil leakage can be cause by the valve?
2. How can I take this valve to clean?
Forget to whice car: Suzuki Samurai 1988
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Old 12-06-2017, 12:29 PM   #3 (permalink)
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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.
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Last edited by urbex; 12-06-2017 at 12:31 PM.
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