Squish Posted May 3, 2020 Share Posted May 3, 2020 Hi all!, just looking for some info on this spring brake valve I believe? I went to my local dealer and this is the part they gave me but the new part will not bolt up to the cab and the new valve has another fitting hole to it? Is this the right part and a updated version? Or just the wrong part? The truck is a 85 rs688lst with a e6 350 engine, any help would be great! Thanks in advance!! Quote Link to comment https://www.bigmacktrucks.com/topic/62354-help-identify-this-part/ Share on other sites More sharing options...
smorse54 Posted May 3, 2020 Share Posted May 3, 2020 That's a Midland inversion valve. not familiar with the new one. The inversion valve controls the spring brakes and helps to stop you if you lose air in primary system.I would just eliminate it, they quit putting these on back at least 25 years ago. Steve Quote Link to comment https://www.bigmacktrucks.com/topic/62354-help-identify-this-part/#findComment-450299 Share on other sites More sharing options...
GreenGiant2 Posted May 4, 2020 Share Posted May 4, 2020 Good to see you around still smorse54 Quote We the unwilling, Lead by the unqualified, are doing the impossible, for the ungrateful. Link to comment https://www.bigmacktrucks.com/topic/62354-help-identify-this-part/#findComment-450321 Share on other sites More sharing options...
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