Dalton Hathaway Posted November 27, 2019 Share Posted November 27, 2019 Had to replace the foot valve on 1980 Mack semi truck. I must have the hose connections wrong, as no air builds up after starting truck. Can you supply a diagram or chart that I can use to check if I have all the hoses connected properly. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/59982-1980-mack-semi-foot-valve-hose-connections/ Share on other sites More sharing options...
j hancock Posted November 28, 2019 Share Posted November 28, 2019 Page 130 has a basic diagram. https://www.bendix.com/media/documents/BW1114QuickReferenceCatalog.pdf Is your wet tank getting any air? Can you hear the compressor kick in to build air? Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/59982-1980-mack-semi-foot-valve-hose-connections/#findComment-436852 Share on other sites More sharing options...
Truck Shop Posted November 28, 2019 Share Posted November 28, 2019 Should be a E-6 valve, sure you don't have the ports mixed up? you have supply going to delivery-Supply should be IIRC 11 and delivery 12- on primary and secondary supply 21 and delivery 22. IIRC Quote One ping only Link to comment https://www.bigmacktrucks.com/topic/59982-1980-mack-semi-foot-valve-hose-connections/#findComment-436853 Share on other sites More sharing options...
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