LT95 Oil Leak

[eeyore]

Hi all,

Just looking for some advice. Initially I thought I had a leak at the LT95 rear output flange but when I pulled it apart to replace the seal, it didn't really look like the source (been leaking for a while so accumulated oil made it a bit hard to tell). Replaced the seal etc anyway, but sure enough, leak now looks like it actually originates from the join between the main casing and the output housing. From what I've read, I think there's a oil ring seal there? Couple of questions then:

a) Does anyone have the part no. for that o-ring? (I do have a 110 parts catalogue but unfortunately it only covers LT85)

b) Can I remove the housing as a complete unit, rather than strip it back?

TIA

[Bearman]

Hi all,

Just looking for some advice. Initially I thought I had a leak at the LT95 rear output flange but when I pulled it apart to replace the seal, it didn't really look like the source (been leaking for a while so accumulated oil made it a bit hard to tell). Replaced the seal etc anyway, but sure enough, leak now looks like it actually originates from the join between the main casing and the output housing. From what I've read, I think there's a oil ring seal there? Couple of questions then:

a) Does anyone have the part no. for that o-ring? (I do have a 110 parts catalogue but unfortunately it only covers LT85)

b) Can I remove the housing as a complete unit, rather than strip it back?

TIA

No there is no o ring, just a gasket and yes you can remove the rear housing as a complete assembly. If possible see if you can remove it without destroying the gasket as it is crucial for preload on the centre diff assembly. When you refit it, use Loctite on the retaining studs and tighten them to the specified torque (22ft/lb) .

[eeyore]

Thanks very much for the reply Bearman.

This is going to be a dumb question but when you say be careful with the gasket on removal I assume that you're suggesting the gasket is reused if possible? But isn't that what I'll need to replace to fix the leak? :confused: And if I replace it with a new one and just reassemble, is that going to screw up the preload on the centre diff?


Cheers

[Bearman]

If you replace it you need to know that the new one is the exact same thickness as the old one as this influences preload. If you can get it apart without breaking the old gasket just use some sealant on both sides and bolt it back up. Leaks here are usually caused by the studs loosening after time rather than gaskets deteriorating. Aftermarket gasket sets are not necessarily the same thickness as original ones. If you have a micrometer you could check the thickness, otherwise you need to check the centre diff rolling resistance when you install the new gasket.

[eeyore]

Ahh, I understand now :D. I shall be very careful since checking rolling resistance sounds challenging, and with the opportunity to do some expensive damage...

Thanks for your help Bearman.