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Brake warning light switch leaking - Printable Version

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+--- Thread: Brake warning light switch leaking (/showthread.php?tid=7718)

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Brake warning light switch leaking - BusNit - 12-03-2023

I have noticed my compressor running from 4.5 hours to 1.5. I hate leaks and went on a search to see where the new one was popping up from. If it weren't for the pit, I would not have been able to get to the source which is next to the brake protection valve. I dirtied up a good jacket vest not thinking I would spend my Sunday under the coach. Well, there it was blowing bubbles. Curious what the opinions are on replacing the brake protection valve while I am in there? I also noticed the solenoid for what I believe is the tag axle dump is leaking. Not sure where to find that part. I am lucky enough to still have excellent hearing as these two leaks were super silent in nature but enough I could pick them up. The last pic is another solenoid I need to replace if anyone has a part number.

Thanks!

RE: Brake warning light switch leaking - Richard - 12-03-2023

That last one is for the differential lock. Nothing fancy about it, GIGGLE 12V 1/4 NPT air solenoid and you will find lots.

And yes replace PPV while you are in there.

RE: Brake warning light switch leaking - BusNit - 12-03-2023

Thanks Richard. I was hoping not to hear the words "Yes while you're in there" but my gut feeling said the same thing!   Big Grin

RE: Brake warning light switch leaking - Richard - 12-03-2023

AND replace every fitting you can reach with a compression fitting. You are in this coach for the long haul for the moolah you have spent. Make the ankle biting problems start to disappear when you can.

RE: Brake warning light switch leaking - BusNit - 12-03-2023

Almost everything underneath has been replaced with compression. The last remaining are on the diff lock solenoid and everything inside and under the dash. I am dealing with a short circuit on the bedroom heaters. Troubleshot the wiring issue to behind a cabinet where a bunch of ductwork is fastened basically one of the only areas I cannot physically reach without removing floor to ceiling cabinets. My plan is to abandon that circuit which also feeds the rear A/C and run a new line all around the rear using the space behind the cove moldings and rear wall cabinets. The short is on the load out to the heaters. Regardless, I would feel safer to abandon that line since I can't put eyes on it. So disappointed as this is still a massive amount of work that I really do not feel like doing. This all failed when we went to the rally so I can't blame anyone other than time.

RE: Brake warning light switch leaking - BusNit - 12-03-2023

(12-03-2023, 11:04 AM)Richard Wrote:  That last one is for the differential lock. Nothing fancy about it, GIGGLE 12V 1/4 NPT air solenoid and you will find lots.

And yes replace PPV while you are in there.

Richard, I would think the solenoid I am looking for is normally closed? Reason I ask is there are two versions. One is NO and the other is NC until power is applied. I haven't gone back outside. So wiped out today. Father in law is sick and has begun the transfer of sickness to my wife and I.

Thank you as always

RE: Brake warning light switch leaking - Richard - 12-04-2023

I think it is NC otherwise the valve would be sending air to the diff lock all the time

RE: Brake warning light switch leaking - BusNit - 12-04-2023

I found this one. Pricey but I trust the rubber compounds used in it. I will head to the local FleetPride branch and see if they have it in stock. It is listed as an axle control valve. I get constant coupons sent to me.


https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiLifPD_fWCAxV6IEQIHRvEDuIQFnoECBoQAQ&url=https%3A%2F%2Fwww.fleetpride.com%2Fparts%2Fair-system%2Fair-valves%2Fsolenoid-valve%2Fhaldex-solenoid-valve-kn68230&usg=AOvVaw1AfF6avJxFnWQrCtRsAn4m&opi=89978449

RE: Brake warning light switch leaking - BusNit - 12-15-2023

Been dealing with what felt like covid symptoms for the last week or so. Today was a better day so I got under the coach and removed the BPV assembly. I put in new fittings although the originals were compression and not leaking but since I paid a visit to my buddy at FleetPride last week, I picked up a bunch of new fittings. I haven't aired up the coach yet since I still need to put the Haldex diff lock solenoid in. I truly hope there are no leaks and this helps resolve the compressor from coming on every hour or so. For sure the brake low pressure switch had a decent leak as did the diff solenoid.

RE: Brake warning light switch leaking - Richard - 12-16-2023

That was clever, remove the assembly instead of individual components