06-15-2020, 07:10 AM
Hello all,
As I try to get to know my new (to me) coach, I've run across a few things that aren't specifically addressed in the threads in this sub forum.
I have a mystery switch on the dash that when toggled, turns on a chime. After more experimentation, I found that when energized, it also causes one of the 6-pack solenoids to vent from the manifold, drawing down all coach air. While I have a little understanding of the manifold and 6 pack design, most people seem to only have 1 where I have 2 in the rear. The mystery switch causes the lower left solenoid on the lower 6-pack to vent when the ignition is on. Not knowing what the switch did, I disconnected the associated chime and turned it on. It eventually vented all the air and nearly left me stuck. Luckily, I remembered that I changed something and flipped the switch back off and the coach started to build air again. Crisis of the moment avoided.
My hope is that the mystery switch is the Tag Dump and everything is working as it should, however, I don't think that's the case. On that topic, I would like to add a tag dump switch, if there isn't one already there. (maybe another mystery switch somewhere)
The top manifold also has the vent hole that also appears to be used, but I am not sure what causes it to function.
I can also see in that photo that I think I need a new air filter.
Thanks,
Chris
1990 Newell #234
As I try to get to know my new (to me) coach, I've run across a few things that aren't specifically addressed in the threads in this sub forum.
I have a mystery switch on the dash that when toggled, turns on a chime. After more experimentation, I found that when energized, it also causes one of the 6-pack solenoids to vent from the manifold, drawing down all coach air. While I have a little understanding of the manifold and 6 pack design, most people seem to only have 1 where I have 2 in the rear. The mystery switch causes the lower left solenoid on the lower 6-pack to vent when the ignition is on. Not knowing what the switch did, I disconnected the associated chime and turned it on. It eventually vented all the air and nearly left me stuck. Luckily, I remembered that I changed something and flipped the switch back off and the coach started to build air again. Crisis of the moment avoided.
My hope is that the mystery switch is the Tag Dump and everything is working as it should, however, I don't think that's the case. On that topic, I would like to add a tag dump switch, if there isn't one already there. (maybe another mystery switch somewhere)
The top manifold also has the vent hole that also appears to be used, but I am not sure what causes it to function.
I can also see in that photo that I think I need a new air filter.
Thanks,
Chris
1990 Newell #234