560sl AC lines
 

Would anyone be able to tell me what the two lines in the attached picture are? They connect to the low pressure line in the Air Conditioning system. I posted a thread yesterday concerning an AC leak I have, that several members have helped me with. I'm going through the system replacing o-rings, and got stumped by these lines. (BTW, I got this pic. on line ) Thanks

those are fuel return lines to the tank. the ideas is to keep the fuel temp low and therefore, no vapors. never seen an ac leak thre. good luck, chuck.

Thanks - I'm going to stay away from there. The larger hose is the AC low pressure hose, right? Since I have the system open, I wanted to change the o-rings on either end, ie. before and after those fuel lines. Sound like a good idea? Thanks

Yes, change all the o-rings.

The hoses are just for the fuel cooler.