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1 minute ago, mechohaulic said:

might be alot easier to take the feed line off the trolley in cab then lines off brake valve. trolley three lines 1-supply(constant air) 2-supply( air to shuttle valve on brake pedal ). 3 exhaust port (out to fire wall.

forgot the simple part (i'm old).before taking any lines off just work the trolley to see if it was partially pulled.if it wasn't THEN take off the line check for air going through.also  if there was another air back feed on the treddle valve the valve SHOULD have an air leak out the bottom (exhaust port ).

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11 minutes ago, mechohaulic said:

might be alot easier to take the feed line off the trolley in cab then lines off brake valve. trolley three lines 1-supply(constant air) 2-supply( air to shuttle valve on brake pedal ). 3 exhaust port (out to fire wall.

error===2 is not supply; 2 is delivery. 

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On 2/4/2022 at 10:55 AM, 85snowdog said:

Thanks so much for sharing your fix. 

So many times people ask for advice and never come back to say what the problem actually was. 

We are very fortunate to have some very knowledgeable folks on here willing to help. 

Would it be possible to see your RW :whistling:  We love pics 

 

Pictures are like the currency for info. We all love pictures

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