IF IT AINT LEAKING OIL IT..........

[miles]

Yep my disco is a dog.... always marking its territory. Oil leaks.

I have a persistant oil leak from the bottom of the front diff on my disco.

I have laid under it with the engine running. No it is not coming from the engine. It is the front diff itself.

It is leaking out of a pinhole in the circular weld where the centre housing is welded in. Would you believe it? No not at the bottom but at about 4 o'clock, looking from the front.

My proposed method of treating this problem is, drain the oil from the diff. Thouroughly clean the area with brake cleaner ( to get rid of the oil inpregnated), then when it is absolutely clean, coat the area with Devcon Steel appoxy. Then prior to the devcon going hard, pein it in to the hole with a small ball hammer or drift, wipe the excess off and then apply another light clean coat.

Anybody out there got a better suggestion? Taking out the diff and having the pinhole welded up is out of the question. No way hossay.

[400HPONGAS]

Miles . your little pin hole may be a tiny crack , Flap disk the area to remove all paint then Dye check for cracks . Then grind it out then Mig it up ! prime and paint .

[Blknight.aus]

yep, pin hole leaks at the welds are usually a good indicator of a cracked weld. the big question is... why did it crack.

brake clean flap disc it and then go it with the 4 part dye chekcers or if you know someone who has one a magnaflux checker.