75 series diff housing
Submitted: Wednesday, Jan 10, 2007 at 16:36
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Member - sparra
g'day, i have a small split on the rear diff housing with oil slightly weeping out, will a quick hit with the welder fix it or is there a proper fix/process to repair it. cheers sparra.
Reply By: Wayne-o - Wednesday, Jan 10, 2007 at 16:50
Wednesday, Jan 10, 2007 at 16:50
hey mate, drain the oil, clean the area, grind it smooth if you have to and fill if you have to then weld a run above and below the crack, clean the welds, then bump the power up slightly and use a slighlt bigger rod, and weld a clean run through the guts, should be able the hand 3 tonne off the weld......(if you wanted too), bu nothing will get through the pal, let me know how you go!!!
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Follow Up By: Member - sparra - Wednesday, Jan 10, 2007 at 16:55
Wednesday, Jan 10, 2007 at 16:55
no worries,thanks for that wayne-o. cheers sparra.
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Reply By: Wayne (NSW) - Wednesday, Jan 10, 2007 at 17:12
Wednesday, Jan 10, 2007 at 17:12
Sparra,
I had the exact same problem.
Tried to weld the crack on the vehicle, but the crack opened up again.
Took the diff housing out of the vehicle, ground the crack, drilled the end of the crack to stop it getting any bigger and welded a plate over the crack. Replaced the diff and no more leaks, however the other side if the diff housing cracked after doing the Canning and the Kimberleys.
I fixed one crack and another appeared. I could have plated the new crack but where will it end.
I finally ended up getting another second hand diff housing that has not been cracked and put that in.
Why I think that they crack is if the vehicle is jacked up with the jack under the centre of the diff, too much weight is put on to the outer ends of the diff housing and the diff housing bends slightly and then cracks.
The 78 Series that I have now has the reinforced diff housing, the 80 Series was the same but I don't know why they did not reinforce the 75 Series diff housing.
If you want to weld the diff housing and only have to do it once, take the diff housing out and weld plates over the cracks. It might take the best part of a day to but in the long run it will save time.
Wayne
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Follow Up By: Member - sparra - Wednesday, Jan 10, 2007 at 17:50
Wednesday, Jan 10, 2007 at 17:50
thanks for the input wayne,the split is only very small at the moment but as you say,it may crack somewhere else again so maybe another housing will be the go.will have a yak to the boily and see what he reckons. i don't what it to let me down out the back of the great sandy etc, thanks again, cheers sparra
[ps.i saw your troopy at your
camp at
birdsville race weekend,was gunna stop and say g'day but you were'nt there the times i walked past.]
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