05-15-2023, 05:10 AM
I am kinda with Jim on this one.
The first thing that I would do would be to look at the gauge in the engine bay. With the engine running, it should build to 120 psi. The coach wont even start to lift at less than 90 psi. If it does not do that, it could be a huge leak, or the regulator has a problem or the engine compressor has a problem.
The air system on these coaches has quite a lot of volume, so if the air has been released due to maintenance, it will take a while to fill up and start building pressure.
Watch the engine gauge and make sure it is increasing (possibly very slowly) with the engine running. If not, start the troubleshooting.
For what it’s worth.
Bill
The first thing that I would do would be to look at the gauge in the engine bay. With the engine running, it should build to 120 psi. The coach wont even start to lift at less than 90 psi. If it does not do that, it could be a huge leak, or the regulator has a problem or the engine compressor has a problem.
The air system on these coaches has quite a lot of volume, so if the air has been released due to maintenance, it will take a while to fill up and start building pressure.
Watch the engine gauge and make sure it is increasing (possibly very slowly) with the engine running. If not, start the troubleshooting.
For what it’s worth.
Bill
Bill Johnson
Birmingham, Alabama