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Old 01-11-2021, 02:59 PM   #15
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Sounds normal to me. 120psi pressure build - air dryer purges when engine air compressor unloads. All good.

Dropping to 0 over a couple of weeks would suggest a leak (small) and not a worry in my mind.

The green needle is for the drive axle (rear and primary tank) and the orange needle is for the front (secondary tank)

Brian
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Old 01-11-2021, 03:56 PM   #16
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It's amazing how you don't notice every little thing when it seems to go right. Or maybe I am becoming paranoid. I have VMSpc should have that connected
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Old 01-11-2021, 09:03 PM   #17
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It's amazing how you don't notice every little thing when it seems to go right. Or maybe I am becoming paranoid. I have VMSpc should have that connected


Nope. Not paranoid. Just becoming more aware of your coach. That’s a good thing. Hope we can help.

VMSpec is a tool to monitor operating operations - mostly engine and transmission parameters. Not air system.

Brian.
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Old 01-12-2021, 06:33 AM   #18
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Understand, think it will be more accurate than the gauges.
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Old 01-12-2021, 08:56 AM   #19
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Understand, think it will be more accurate than the gauges.


Yes - digital information and display from engine ECM, rather than analog sweep gauges. It takes a bit to configure the vmspec display screen on your device. Good luck.
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Old 01-12-2021, 10:27 AM   #20
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Mine screen has been set for sometime now, just waiting for the next release.
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Old 01-13-2021, 01:52 PM   #21
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OK, folks another question. In the run bay there are two switches, the top one say's Generator Out/In and the bottom say's ABS Blink. So what does ABS Blink mean and what position should it be in?

Another update. Started the coach on Monday, both gauges went to 125. Tuesday both gauges where at 70 and today both gauges are at 10.
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Old 01-13-2021, 04:59 PM   #22
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OK, I Googled ABS Blink not something anyone has every told me about. The switch is in the down position and I think it was moved when we tried to get the generator out. Anyone have any information on this it would be appreciated. Think I have an air leak going to review videos that where sent and go from there. Not able to get on the ground.
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Old 01-13-2021, 05:38 PM   #23
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PSI

Quote:
Originally Posted by wfalch View Post
OK, folks another question. In the run bay there are two switches, the top one say's Generator Out/In and the bottom say's ABS Blink. So what does ABS Blink mean and what position should it be in?

Another update. Started the coach on Monday, both gauges went to 125. Tuesday both gauges where at 70 and today both gauges are at 10.


Not unusual at all for a rig as old as yours to leak air as much as yours is, which isn’t much. You’ll probably never find all the tiny air leaks. My 2002 DP Leaks down to zero in a few days. My 2019 Peterbuilt leaks varies. But it does leak down.

If it leaks bad enough to hear it leaking then chase that leak. I wouldn’t waste time with soap and water, unless it was leaking down in a few hours and you can’t hear it to find it.
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Old 01-14-2021, 07:09 AM   #24
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Sounds like no problem diving it, plan to visit Kaiser in Eugene in April
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Old 01-14-2021, 01:44 PM   #25
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The ABS Blink light is I think a diagnostic tool for the ABS system. I think you are supposed to be able to read the blink pattern and pull an operational code from that. I've never touched mine.

Having your coach system leak down from 120 to 70 in 24 hours time isn't great but nothing to worry about unless it suddenly started doing that; could be a harbinger of a rapidly developing air leak. Pay attention and dig into it if it gets worse. I drive class 8 trucks that are DOT approved that leak down below 60 in just a few hours. Small air leaks are common in motor vehicles.

As a point of reference our 2000 Magna with 120,000 miles holds air for weeks; might leak down to 60 in three weeks.
Fred
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