Master
Hi,
I'm pondering whether I should apply a slight vacuum to the breathers of the gearbox and transfer case. I think this would minimise any tendency to leak. Was thinking of routing them to the turbo air intake. I figured the vacuum pump would be too strong and probably suck the seals inside out.
Does anyone else have a better idea?
Shouldn't a breather work both ways, lets expanding air out and then air back in when the temp is low. Applying suction at all times will only suck air out in effect causing a vacuum, surely these parts weren't designed to do that otherwise manufacturers would have done this?.
Wizard
I'd be concerned about increasing the likelihood of contaminants being sucked in through the seals. You don't need pollutants to make it all the way into the box to cause problems. Just having some dirt or dirty water pulled in between the seal and its rotating part is enough to wear the part at the interface, making your leaking problem worse.
Brian & fellow members Hi from Greece,
a lot of makers of serious offroad and heavy vehicles are actually pumping positive pressure into the casings of the axles and transfer and gear boxes.
For example several models of the Unimog range are fitted with a positive pressurization system of the transmission components. Not a serious pressure but a bit more than the atmospheric so that contaminants will not be able to be sucked inside the casings from faulty or well used-up seals and joints.
This of course, if fitted to a Land Rover will definately lead to more oil leaks but then again when was the first time you saw a Landy that does not leak????? <LOL>
On the other hand if this positive pressurization system is being made so that it operates when the vehicle is used for deep water wading or other similar conditions that may lead to oil contamination and then it is switched off, then it may be a good and useful idea.
Take care
Pantelis Giamarellos
LAND ROVER CLUB OF GREECE
Land Rover World
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