Thread: Maxi Drive Axle Leaks

Wouldn't be as simple as a diff breather issue? Have you extended the breather to a higher point well above water level?
Andy

Do the maxi drive vacuum units leak water and if so how seal?

If water leaks IN then oil will leak OUT.
Sometimes the Box that is welded to the housing will leak if poorly welded and the fix is to spread around a bit of silastic.
Graeme Cooper had to have about 3 goes at mine before success.
Regards Philip A

I would be looking at the swivels and the breather first. If water can leak in, oil will leak out.

The only place the cylinder can leak is where it is bolted to the mount block. Or the mount block can have been welded badly - so it becomes porous.

If you have the MD strengthened/laminated diff pan, they are often full of pinholes.

what about the old one of a hot housing cooling rapidly and sucking water in....the comp guys generally pressurise there housings with low psi from a compressor...like about 3 psi

Originally Posted by uninformed

what about the old one of a hot housing cooling rapidly and sucking water in....the comp guys generally pressurise there housings with low psi from a compressor...like about 3 psi

That's what I was thinking.

I always liked my step fathers answer that when they came to a creek they'd stop and boil the billy back in the day, just to let all the compartments cool before fording.

Thanks Guys

Swivel Housing DO NOT have water in them. Oil is milky in main diff/axle only.

This diff has seen a lot of hot dumpings and never leaked until very recently - Rear is dry and had same treatment - no obvious leaks.

Rangy01 - I will remove the breather hose and test if it is split or if that leaks - it could have been damaged at some point I guess

We have replaced the whole right hand swivel twice (it is our quick fix at comps if break a CV and need to change between runs - we pull whole right hand assembly off and bolt a disco one on and drive more sedately).

Should there be a seal where the swivel housing bolts to the axle housing?

isuzurover - this is a set up that has been used for years and never leaked so doubted it could be a poor weld etc UNLESS axle housing has twisted/moved somehow.

I thought I did see a leak from where the diff bolts to the housing - but could have been other oil as power steering pump connection leaks and needs to be fixed

Couple of pics attached





Thanks for comments and suggestions