Quote:
Originally Posted by ROLLGUY
I have worked on probably 30 of these systems, and more often than not, the hoses leak. My experience says they SHOULD be replaced. So often there is enough time and money to do things over, but not enough time or money to do it right the first time. Why is that?
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How did you determine that the hoses leaked? Did you test each hose individually?
I tested total about 15 x W123 AC hoses with a digital pressure gauge with the hose submerged underwater and they were all good. Those hoses were 35 to 40 years old. 2 of the hoses (taken from an 82 300D), looked rotten on the outside but still tested good and did not leak.
An important point I am making here is: unless you do a proper test on each hose, you do not know if the hose is good or bad.
edit: I did not and would not use the rotten looking hose, even though it tested good. W123 AC hoses are thick with 2 layers. Even though the outer layer is rotten, the inner layer could still be good.
Took my 85 300D for a drive today in 90 F weather with nice cold AC.