which is the pressure line and which is the return line? top or bottom?

 

There is no "pressure" or "return" line, per se.

http://www.autoshop101.com/forms/brake08.pdf

Make sure you read up on the difference between LSPV and LSPBV. There is a difference.

 

i replaced both lines to the rear but affraid i mixed them up, with my abs (all wheel) it has a return line i guess from the rear that t's the pressure line to the front wheels under the master cylinder, the other "pressure" line i guess it would be comes strait out of the ABS to the rear. but i dont remember which line was which. and i'm having problems after fixing the broken line. i'm only getting brakes in the rear and i cant get the air out of the system ( mushy pedal)

 

Truth be told, I pulled the LSPBV out and ran one line off the front to the back and blocked the other from the front.

Upside, I have way better brakes than I did before.

Potential downside, the back end could try to outrun the front under heavy braking. I haven't had any problems yet, with the rear ABS keeping the back end in check.