on our trip to virginia last month i developed a small air leak...nothing serious...small leak behind the dash, and only when foot was on the brake pedal.
I got up to virginia i and did some searching around...was glad to find out it
wasnt a loose or split line.
turned out to be one of the switches in the manifold behind the dash...it was leaking around the aluminum crimp on the switch, and w/ a little searching i learned it was the Cruise Control Cut Out.
really had a tough time getting a socket behind the dash so i took my time and did it right...
worst part was the freightliner dealer couldnt find any manifold w/ 5 switches in it...nor could he tell me what any of the switched was for....too bad he didnt have google like i did....
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over