Vehicle & Technical > Discovery
Axle breathers
Range Rover Blues:
I just used fishtank pipe but then I had the box out anyway. Tip, if it's black piep it will be carbon in the colouring, this can help with resistance to ageing in hot places (and sun), this is the only reason your tyres are black.
clbarclay:
I'm using pneumatic control piping as we had a 30m roll of it at home, its pritty much identical to the standard breather pipes so i'm just replaing the old pipes and reausing the existing banjo fittings.
beatmasterdave:
ok, sorry guys, but why do the axles need to breathe? is it a pipe you've all put on them? from where to where?
cheers
muddyjames:
--- Quote from: "Range Rover Blues" ---I just used fishtank pipe but then I had the box out anyway. Tip, if it's black piep it will be carbon in the colouring, this can help with resistance to ageing in hot places (and sun), this is the only reason your tyres are black.
--- End quote ---
I thought tyres were black because tarmac is and if we had multi colour tyres as they wore away the road would be multi coloured and even more confusing in places than it already is. You learn something every day!
wizard:
You need breathers on the axles and gear/transfer box to allow for the expantion and contraction of the air in the respective housing.
If you block the axle breather pipe off then as the oil warms up in the axle it warms the air inside which inturn increases the air pressure this pressure will then force the oil out a seal.
When the air cools it contracts and creats a vacuum effect, this vacuum will suck in air from outside the axle casing, along the standard breather pipe fitted to both front and rear axle (passender side). If this pipe is under water at the time the axle is cooling then you suck up crud into your axle casing. The same applies to the gear/transfer box.
For this reason if you indend to do a bit of wading its advisable to extend the breathers into the engine bay or better still up the snorkel.
regards
wizard :twisted:
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