Quote:
Originally Posted by BillGrissom
Re-read my post #9. Re-use the outer fittings, just add new hose.
If you do want to procure new fittings, it will take detective work. I think they are an O-ring fitting w/ metric nut and perhaps not even the same tube size as SAE O-ring fittings. That is why Rollguy decided to just braze an old M-B fitting to form his custom hose assemblies. Don't assume that Europe was standardized on fittings in the 1980's. A Wheeler Dealer's episode explored that when trying to source a hose for an Italian sports car in England. They said Lamborghini (?) used an unpredictable mix of various fittings. Ditto for other rare fittings on your M-B.
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Do you know what the core of the OE Mercedes hoses are made from? Just want to make sure I use compatible flushing agent on them. For now I plan on re-using all hoses if they pressure test good. I have 2 more hoses to do. So far I have found no leaks, including the compressor, which I had under water and no bubbles!. The first time I tested the compressor was still in the car. I did a input suction and output pressure test by hooking gauges to the inlet and outlet and cranking the engine. I got good vacuum and pressure. I did a pressure and vacuum test with the digital test set and it held vacuum but leaked badly with pressure. I think it may be due to the sad shape of the o-ring on the high side fitting by the alternator (see pic below). There are other o-rings in similar condition. If everything pressure test good, I will just install new o-rings and charge it with R12 and PAO 68 and see how it works out. If it fails, I'll consider barrier hoses then.
