gidgrace
New Member
- Posts
- 109
- Location
- Hindhead, Surrey
I got back from holiday to find that my 1985 90 seems to be leaking oil from the rear axle around the back of the diff casing (pan?).
The rear axle is from a donor disco 1 (to get rear disc brakes).
It looks like someone has put mastik or some sort of soft sealant around the edges of the join between the pan and the axle and, after it's been driven for a while, if I run my finger round the sealant where it's wet with oil, it will bubble and hiss in places.
I'm guessing that the seam weld between the diff pan and axle is corroded and the sealant has now gone off and is leaking. It probably loses about a teaspoon of oil a day by the looks of the spots on the drive.
So, being relatively new to the world of land rovers, I'm wondering what to do with it.
My thoughts so far:
1. Remove QT diff guard
2. Drain diff oil
3. Scrape off all the sealant
4. Use emery paper to remove paint / rust back to bare metal
5. Use "chemical metal" type filler to fill any holes and form a seam
6. Apply a good coat of metal paint
7. Top up the diff oil (what oil do I need to top up a disco1 diff after the fix?)
8. Drive around for a bit and then check for leaks
I suppose if the above doesn't solve the problem then I should get someone to weld a new seam between the axle and pan. Do you have to drain take the diff out to do the weld? How much is that likely to cost?
Is there any advice you guys can offer me?
The rear axle is from a donor disco 1 (to get rear disc brakes).
It looks like someone has put mastik or some sort of soft sealant around the edges of the join between the pan and the axle and, after it's been driven for a while, if I run my finger round the sealant where it's wet with oil, it will bubble and hiss in places.
I'm guessing that the seam weld between the diff pan and axle is corroded and the sealant has now gone off and is leaking. It probably loses about a teaspoon of oil a day by the looks of the spots on the drive.
So, being relatively new to the world of land rovers, I'm wondering what to do with it.
My thoughts so far:
1. Remove QT diff guard
2. Drain diff oil
3. Scrape off all the sealant
4. Use emery paper to remove paint / rust back to bare metal
5. Use "chemical metal" type filler to fill any holes and form a seam
6. Apply a good coat of metal paint
7. Top up the diff oil (what oil do I need to top up a disco1 diff after the fix?)
8. Drive around for a bit and then check for leaks
I suppose if the above doesn't solve the problem then I should get someone to weld a new seam between the axle and pan. Do you have to drain take the diff out to do the weld? How much is that likely to cost?
Is there any advice you guys can offer me?
