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Old 05-28-2018, 07:51 PM   #21
Join Date: May 2018
Location: Orlando
Posts: 15
Year: 2008
Coachwork: ICCO RE300
Engine: Base - L6 - 7.6L 7638cc 466ci DIESEL MFI
Let's see if I can finally share pictures. This shows the mechanism above my door that uses air pressure to open the door. As I'm removing the ceiling panels and replacing the door I had to disconnect the wires to get the panels out. Since I move the bus to work on it the gauge still showed enough pressure for me to move it back and I thought everything was fine.

The next day when I went to move it the gauge wouldn't show the pressure rising. Fortunately it was a simple as reconnected the ground wire (the white one hanging down in the middle of the picture) to the ground (copper colored blob towards the upper right area.)
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AMDenels is offline   Reply With Quote
Old 05-28-2018, 08:01 PM   #22
Bus Nut
Join Date: Jan 2016
Location: Greater Boston
Posts: 504
Originally Posted by AMDenels View Post
I think that ground wire must have had something to do with the gauge itself. I couldn't release the parking break because the gauge was reading as too low. Once I reconnected the ground wire the gauge shot up showing the pressure was high.
i could see an electric interlock based on the physical position of the gauge needle as a way to determine if the bus will release the parking break or not. Its almost a double failsafe - the bus needs to have air AND a working gauge - even if the gauge doesn't work (but theres air), you can't ignore it and drive anyways.
Mark_In_MA is offline   Reply With Quote

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