soperlogan Posted April 17, 2023 Share Posted April 17, 2023 I have an air toggle switch on our 88 Superliner. Air lines lead to an aluminum block mounted on firewall. Does anyone know the purpose of this switch? Quote Soperlogan Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/ Share on other sites More sharing options...
Solution mrsmackpaul Posted April 17, 2023 Solution Share Posted April 17, 2023 Air tailgate Deep reduction Locking of dog trailer turn table Could be anything Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529455 Share on other sites More sharing options...
Joey Mack Posted April 17, 2023 Share Posted April 17, 2023 How about finding which port is the output, and follow the line to the end..? Paul has a point... Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529457 Share on other sites More sharing options...
soperlogan Posted April 17, 2023 Author Share Posted April 17, 2023 Thanks. Follow it back tomorrow during daylight. Tailgate is separate but similar switch. Mack rears, no deep reduction. 14' dump body. Post tomorrow sfter I trace the lines. Thanks again. Quote Soperlogan Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529460 Share on other sites More sharing options...
mechohaulic Posted April 18, 2023 Share Posted April 18, 2023 correct me if I'm wrong ;; isn't the alum fire wall block just an air manifold .individual ports. flip dash switch see/ hear what happens. possibly some thing was disconnected or by passed. manifold must help in chassis building when new, full groom cab = chassis functions plumb in to lower ports? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529477 Share on other sites More sharing options...
mechohaulic Posted April 18, 2023 Share Posted April 18, 2023 super enlargement shows a possible feed line on left (1/2 in) two top ports on right plugged off on bottom. Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529478 Share on other sites More sharing options...
Popular Post doubleclutchinweasel Posted April 18, 2023 Popular Post Share Posted April 18, 2023 12 hours ago, mechohaulic said: super enlargement shows a possible feed line on left (1/2 in) two top ports on right plugged off on bottom. So, maybe GNDN... Goes Nowhere. Does Nothing. 1 2 Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529498 Share on other sites More sharing options...
soperlogan Posted April 18, 2023 Author Share Posted April 18, 2023 Traced it. Two smaller lines on manifold go to the dash air switch. 3/8" air line from top of manifold goes to side port on tractor protection valve. There is also an electrical switch where this line attaches, but the wires have been disconnected.Bottom 3/8" air line from manifold goes to maxis. Switch does nothing, so you are right GNDN. They pulled air from that manifold to the switch at one time to operate whatever when it had a fifth wheel way back. Thanks for all your interest and help! 1 Quote Soperlogan Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529515 Share on other sites More sharing options...
Joey Mack Posted April 18, 2023 Share Posted April 18, 2023 👍🍻 Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529516 Share on other sites More sharing options...
mechohaulic Posted April 18, 2023 Share Posted April 18, 2023 that makes sense. the toggle switch went to air slave cyl on 5th wheel . cut off wires went to dash WITH INDICATOR light or buzzer letting operator know 5th wheel not locked. wheel change over to manual or just put in one spot and left. disconnected air /electric . THANK YOU for follow up info Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529521 Share on other sites More sharing options...
mrsmackpaul Posted April 18, 2023 Share Posted April 18, 2023 Perfect, a result and some feedback Thank you 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529523 Share on other sites More sharing options...
Joey Mack Posted April 18, 2023 Share Posted April 18, 2023 👍🍻 Quote Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-529524 Share on other sites More sharing options...
Mean Green Posted April 27, 2023 Share Posted April 27, 2023 WOW There are days I feel just like that switch 1 Quote If your going to be a bear be a grizzly Link to comment https://www.bigmacktrucks.com/topic/72747-dash-air-toggle-switch/#findComment-530125 Share on other sites More sharing options...
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