Thread: Putting R134a Refrigerant In A 1991 W126 350SDL--Use A Different Expansion Valve?
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Old 08-03-2016, 10:36 AM
leathermang leathermang is offline
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Location: central Texas
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Quote:
Originally Posted by funola View Post
The fittings on the evaporator are called A/C BEADLOCK FITTINGS. On the evaporator side are sizes #8 & 10, on the other side of the TXV are #6 & 10.

This is what the fittings look like on the evaporator and hose ends (ignore the furrule)
AC A C Beadlock Fittings Crimp on Male O Ring Straight 10 Nut 10 Hose 0092 | eBay

If you can find mating connectors to the fittings on the evaporator, then it makes flushing easy. I have not been able to find them (not even sure what they are called or if they are available) and am in the process of cutting up old TXV's to make adapters for pressure testing and flushing the evaporator (if it pressure tests good).
' cutting ' up the old TXV's ( or taking out the innards and being sure there are two independent routs for the in and out flush fluid.) is the specified recommendation in the MB FSM AC manual .
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