ac system screens?

[old_]

does anyone know if MB hid screens anywhere in the AC system on a w123 or w126 (my engine came from a 300sd)? I am going to flush my system and would like to know for sure. thanks!

[rrgrassi]

Are you talking about inline filters in the A/C freon lines?

My '82 does not have any.

[leathermang]

It does not mean that they do not...but in all my reading on MB AC stuff I have never seen any indication of one.... if I had I would remember it because it would automatically mean that the flush would need to go a certain direction first. If an inline filter ( which I recommend ) was added by a previous owner it would normally be replaced instead of being flushed.

[Matt L]

Orifice tubes typically have screens. Thermal expansion valves do not, but you can't flush through them either.

[nhdoc]

My 107 chassis had a screen just before the expansion valve but I don't know if they used them on other models. On mine it was the cause of very poor A/C performance when it got plugged up!