11-06-2019, 05:52 PM
Tom and Richard thanks for your responses and for the sketch of the air system. A couple of quick answers:
1. We do not have a tag axle. Our coach is 35' 2" completed in January 1984. No tag, no slides.
2. None of the MAC valves seemed to be magnetized at any time when I was testing them (always in travel mode during the tests). Will do more checking on that tomorrow (Thursday). Should at least some of them be magnetized when the Level Up or Down switches are engaged? I would think so.
3. The coach does air up in either mode, achieves travel height, and each corner will raise really high in level mode. I was shocked at how high it can go. When the engine is turned off (and the compressor goes off with it), the air bags stay inflated but the supply air system PSI falls to zero within a few minutes according to the dash board gauge.
In addition, I will post pictures of the leveling switches (top and bottom views) tomorrow. The leveling switches have been in the off positions during all the above testing. I do suspect a possible wiring screw up in some way as a result of the mobile mechanic and then us replacing the ignition switch. We are tracing down the various wires and circuits going from the ignition switch to the leveling switches and the various MAC and Skinner valves. We found that one wire (brown) seems to go from the ignition switch to the rear six pack and another wire (orange) goes from the ignition switch to the front six pack. Both wires are energized with the ignition switch in the on position and, when energized, the top MAC valves (front and rear) start venting air.
Also, while looking around yesterday Laureen and I confirmed the location of our engine mounted compressor (the only one we have), found our air dryer and saw the purge valve discharge several times while the compressor was cycling. We also discovered another air tank, this one mounted vertically near the rear axle, driver's side. We also found our two rear height control arms. So, we are slowly getting familiar with the air system and have watched Richard's videos several times, which has been enormously helpful.
Tom, I went to Clarke's blog and found photos he had posted of his coach's rear six pack that y'all replaced and that was helpful, especially the idea of taking a picture of everything before starting to dismantle and replace anything.
1. We do not have a tag axle. Our coach is 35' 2" completed in January 1984. No tag, no slides.
2. None of the MAC valves seemed to be magnetized at any time when I was testing them (always in travel mode during the tests). Will do more checking on that tomorrow (Thursday). Should at least some of them be magnetized when the Level Up or Down switches are engaged? I would think so.
3. The coach does air up in either mode, achieves travel height, and each corner will raise really high in level mode. I was shocked at how high it can go. When the engine is turned off (and the compressor goes off with it), the air bags stay inflated but the supply air system PSI falls to zero within a few minutes according to the dash board gauge.
In addition, I will post pictures of the leveling switches (top and bottom views) tomorrow. The leveling switches have been in the off positions during all the above testing. I do suspect a possible wiring screw up in some way as a result of the mobile mechanic and then us replacing the ignition switch. We are tracing down the various wires and circuits going from the ignition switch to the leveling switches and the various MAC and Skinner valves. We found that one wire (brown) seems to go from the ignition switch to the rear six pack and another wire (orange) goes from the ignition switch to the front six pack. Both wires are energized with the ignition switch in the on position and, when energized, the top MAC valves (front and rear) start venting air.
Also, while looking around yesterday Laureen and I confirmed the location of our engine mounted compressor (the only one we have), found our air dryer and saw the purge valve discharge several times while the compressor was cycling. We also discovered another air tank, this one mounted vertically near the rear axle, driver's side. We also found our two rear height control arms. So, we are slowly getting familiar with the air system and have watched Richard's videos several times, which has been enormously helpful.
Tom, I went to Clarke's blog and found photos he had posted of his coach's rear six pack that y'all replaced and that was helpful, especially the idea of taking a picture of everything before starting to dismantle and replace anything.
Glenn & Laureen Parker
Austin, Texas
1984 Newell 35' (Coach #58? - not confirmed)
6v92 TA Detroit Diesel, MT654 Allison 5 speed trans
2005 Honda Element toad
2007 Honda S2000 fun car