Does anyone know what this is?
It is mounted to the air tank over the tag axle. It has some wires going to it.
It is leaking air so I need to replace it. I don't know what to search for . . . .
Thanks in advance!
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Kyle where do the airlines go? That will provide a clue. What happens if you disconnect
The wiring?
Air pressure sending unit I think. They can be used for several purposes. You can buy them at NAPA.
I believe it's likely the air pressure switch that triggers the low air pressure warning. And yes they can leak. The one on my 93 coach did a year or so ago.
It is a LP-3 low pressure switch. NAPA was able to get one for me today. I put it on after work. Only took 3 hours. . . . If you could see it, you couldn't reach it - if you could reach it, you couldn't see it.
Why did they use screw on terminals ? The slip on spade would have saved over an hour . . . .
If this part isn't the part they built the coach around, it's got to be the second!
Ironic that the low pressure switch was causing the low pressure . . . .
I also replaced the air tank moisture pull drain valves on the front 2 tanks. Now, my brake air pressure is at 90 psi 4 days.
The main air stays above 90psi for well over an hour now.
AND, I was able to get the air operated step cover slide working - added a pressure regulator & cleaned some electrical connections.
Nice when more stuff works ! ! ! !
Ironic that the low pressure switch was causing the low pressure . . . .
Obviously it was "on" and doing it's job....