On Tue, 29 May 2001, Hope Peter wrote:
:> I have raised breathers, but, yes, I will check to see if they're
:> clogged. The weird thing is that this leak (apparently) started while
:> she just sat, when internal diff pressure wouldn't have been an issue.
:
:
:What I have always wondered is...what causes this pressure?
:Is it the heating cooling/expanding contracting thermal dynamics thang? Or
:is it something to do with petroleum breaking down.
:
Heat. Axles get hot, the air in the casing expands, and wants to go
somewhere. If the breather is clogged, it'll force oil past a seal.
Usually it's the axle seals, at least on Rover axles, but the pinion seal
and the gasket between the diff and axle casing can leak because of this
too. I had a breather get plugged up, and drove around for a couple of days
without it, while it was soaking. I was suprised by the amount of oil that
appeared to have been expelled from the hole.
-- dscheidt@tumbolia.com Bipedalism is only a fad.
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