While thinking axle breather design is rubbish ......

[Shayne]

And rooting through all the junk in my shed looking for a length of fuel pipe with which to extend it , I came across this

If its mounted high and so the non return points to the floor then how is it ever going to get blocked ?

 

[Shayne]

Is this a 100 series front axle breather on my 80 ?

 

[Towpack]

That's an OEM 80 series breather, I had one on mine until I extended it. You need a two way valve on the breathers that pass air but block water, not a one way or pressure buildup in the axle/gearbox casing can force oil past seals.

 

[Shayne]

On the contrary it will cause a vacuum trying to pull grease through hub seals and into axle oil .

Never mind halfrauds was the only place open to get tube and I was shocked to find a metre isn’t really long enough for my truck so the factory breather can live here until I have another day of thumb twiddling must find something to do

 

[frank rabbets]

The axle needs to be vented both ways.

 

[Shayne]

Yeah I realized that hence i just raised the factory breather as much as i dare with only a metre of hose , the bigger the lift the harder it is to estimate suspension travel .

Has me wondering though , a Y barb and breathers could suck air from the cabin and expel air in the engine bay - a one way system .

 

[StarCruiser]

Can't see why your one-way system wouldn't work perfectly well. It depends on what level of vacuum is needed to open the non-return valve. The gearbox and axle casings suck in when dipped in water after being hot while driving. You might get some farting noises in the cabin as the axles get wet, so watch out for a thump from the passenger seat!

 

[Shayne]

Early warning system , hold on tight dear the truck is shitting itself

These fuel check valves open/close with significantly less effort that the factory breather but of course its new and the factory breather isn't though it seems to be in good condition and a metal cap over a plastic barb suggest theres little to hinder its operation .

 

[StarCruiser]

I popped some of the little fuel filters on mine to stop anything solid/living getting in.

 

[Shayne]

Thats just something else that can block to my mind , adds to the checklist .