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Topic: No low air alarm (Read 618 times) previous topic - next topic

No low air alarm

My coach does not have a working low air pressure alarm. I suspect the alarm is controlled by the blue box inside the dash which also provides input to the dash air gauges. I believe the blue box is no longer available.

Anybody have a simple fix for this?
Jeff & Patricia
Rescue dog Molly
Previous Foretravel owner

Re: No low air alarm

Reply #1
Well Jeff  ----  If I was where you are, I would disconnect the air line coming into the "box" and add a "T" to which I would add a generic pressure switch of the proper range and pressure and connect the alarm to that switch.  If you have a schematic, you might check and see if there are other functions performed by that switch (probably not).  Have you done the "check bulbs and fuses, etc." trick?  Have a great day  ----  Fritz
Fritz & Kathy Johnson
1991 36'

Re: No low air alarm

Reply #2
I had one gauge that would not read over 70 on my 01.  They do not make the SW gauge any longer so I had a T put in and then ran a VDO mechanical gauge up to the dash. I had to leave the electronic one in to prevent the buzzer and level system light from going on but the gauges do not work so I rely on the new VDO ones. 
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

 

Re: No low air alarm

Reply #3
I think you guys are right - I'll "T" in a line and run it to a switch and new buzzer. The SW gauges do work still but it's only a matter of time before they get replaced with mechanical VDO gauges. Have to check further, but I think the original buzzer is kaput. I do still get a chime from "level on" but the chime for attempting to drive off with the parking brake on is MIA also - don't ask me how I know ;)
Jeff & Patricia
Rescue dog Molly
Previous Foretravel owner