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Originally Posted by Stanher  Whoops!! Sorry again for the "slumber"!! Blame it on my slightly hectic schedule this week!
Anyways, nothing too 'progressive', diff./rear axle and rear springs fiiiiinallyyy out, with quite a lot of effort!! Voila!
My mechanic said a puller had to be used to open up the rear drums, which he did bring but unfortunately broke while attempting it! He said he will try and get another one.
Anyway, the diff. seems to need a thorough overhaul- my man pointed out that the bearings inside are gone.
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Congratulations for opening the differential.What is the condition of the rear axle rods ?Well i think you should give the differential an overhaul and change the required bearings but don't leave it open for too long.Try and get the parts and assemble the differential again.
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Aside, the phosphoric acid treatment sounds more complicated than I thought, requiring washing with caustic soda first to "clean" the whole surface then the phosphoric acid coat and then apply a "phosphate" coating! This is all going beyond my head, me having ditched sciences for arts quite some time ago! Plus the painter at this workshop I'm sure wouldn't do this stuff! 
Do you btw, have any idea about applying phosphoric acid to treat rust?? 
But I have decided to carry on with the sandblasting, which I'll first get done on the leaf springs (as they are far easier to dismantle at the moment and can be made ready) at the location that DKG had told me about. Planned to go there tomorrow as I've no chance on weekdays! Fortunately for me they are open until 5pm even on Sunday.
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well cleaning with caustic soda is a good option before doing the sand blasting or you could just scrape the old paint and then do the cleaing with caustic soda which would be a better idea.Yes getting the rear springs done is a good idea to see how it comes out and then oaint it.
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| IMPORTANT DOUBT: Is it allright to paint the rear springs in yellow zinc primer rather than red oxide, which is normally used (and appears to have been ued even earlier on these springs, from what I can make out)? I know that rubber-based anti-rust paint should not be used of course...but zinc primer should be as good as red oxide as regards texture/application? I feel it'll serve longer than RO hence the idea.
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Well both are a good option but red oxide is normally used by many.See both will have their effects for a certain time and after that you could have to redo it again.Well if you think zinc primer would be better than red oxide then go for that.At the end of the day remember one thing and that is it should satisfy you wheather or not it satisfies others.For zinc primer you have to have a very clean surface other wise it shows up.Rubber based anti rust paint is used for the exhaust normally to prevent rusting and because the rubber paint can take high temperatures and not get burnt.
One more suggestion-I would say get the doors and fenders opend and start the body work on them.and by the time your suspension should be done and fitted back so that you could start the work on the rest of the body like the floors,running board area,and other place in the body.