Newell Gurus

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1996  Detroit 60

The rundown:

1.  Low air light on, with no movement on air supply needle:  at 0
2.  After running 5 minutes air break gauge very low, see photo
3.  Engine compartment gauge at zero.  see photo
4.  Air compressor in Generator compartment just continues to run (does not turn off like normal). 

Stuck in Fallon Nevada.

Help.

Thanks,

Brian
One of two things to check. One the governor on the engine air compressor has given up the ghost. Two, the purge valve on the air dryer cannister has jammed open.

With the air comp in the gen compartment running, surely you here that much air escaping somewhere?

Does it make a difference if the ignition is off or on?
I would think air dryer
You can bypass ...fitting required
hook the two big air lines together
Big Thanks to Richard!

Issue - Air Brake Relay Valve hidden in the rear tire area.
[attachment=8501]



The issue was the one plastic piece wore out and eventually became two!  This created a constant flow of air that could be heard will the engine and compressor was running.
[attachment=8502]
[attachment=8503]



The answer was a rebuild kit for this particular Air Brake Relay Valve. You will need a ring tool to remove the old piece and to install the new assembly.  BE CAREFULL!!!  It took me several attempts to install the new assembly.  After each failed attempt the pieces would fall and spread out all over the place.  Examine each attempt very carefully so you have each part before you secure the ring.
[attachment=8504]

For my 1996 the rebuild kit was just $25 plus the $16 ring tool.
Brian,

Thanks for posting you are OK, and back in action. Always good to hear a “fixed” on the I Need Help thread.

You have me thinking. This is the second time I know of that one of those plastic spool pieces in the relay valve failed leaving the coach stranded where it sat. After the first one, I started carrying the replacement part. Now after the second failure, I think I will go ahead and replace the spool piece as a preemptive strike. Better here at home than the side of the interstate in Wyoming, or worse Atlanta.

For those who may decide to replace the spool piece, remember that the spool piece is part of the brake air system. All air pressure including the brake tanks must be bled before removing the circlip, otherwise you will have over 100 psi of pressure on the spool piece. The spool piece looks to have over a couple of square inches of surface area, meaning the piece will have over 200 lbs of force behind it if you don’t relieve the brake tank pressure. That would leave a mark when it hit you.

And always, support the coach when you are under there.
Brian,
That's a great write-up and I agree with Richard, better to be proactive and replace this at home than on the road. Is there more than one?
Mine has two air brake relays, one on the tag and one on the drive axle. The front axle has what I thought was another relay vale but Richard identified that one as a QR-1 quick release vale.I changed the one on the tag in my shop, the next blew 70 miles north of Atlanta last 4th of July. It was for the drive axle. I limped into the Speedco on the back of the parking lot at 4pm on a holiday Saturday. I got in the queue and they came out and said we don't work on RV's. I told them it was a Class 8 truck identifying as an RV. One of the techs got under there and hollered out the brake relay is leaking, I think we have it in stock. Nope, they didn't. I dry camped beside the building until the lead tech came in Monday morning at 6:30. He crawled under and confirmed the problem. He was going on a mobile call and would check at the Freightliner store, took my model number and VIN. I left right behind him and went to a Peterbilt dealer. First thing he asked was make year model and VIN, of course it didn't show up. I asked for his Bendix catalog, knowing that the center spool was the same on all of them. The third pic I pointed to he said I have it, it was $67. I got back to Speedco just as the lead tech called to tell me my part was unavailable. I told the service writer to tell him I was standing there with part. He got back, pulled the spool and stuck my new pieces in in about two minutes. Replace these and carry spares so you won't go thru what I did.
I've been doing some researching on the availability of the rebuild kit. Napa no longer has it in their system. I only found three sources via Google. I would recommend any coach older that 15 years perform the rebuild.

Thanks for all the help!
I found one on the attached link, it’s a non oem aftermarket replacement. Would this work? And, were the classic coaches of the pre 80s considered class 8 truck? Great idea for a spare to keep in the rig.

https://mpparts.com/part/haldex-102802k-...nt-102802k
Mike, if you choose to keep a spare tire on the coach, there are some down sides. It takes up storage and it is trash in 10 years.

Depending on your size, many road service folks have that size to bring if called for service. If you use Michelin or BF Goodrich brand tires, Micheling On-Call will have a provider with your size tire at your coach in about 2 hours. Plus National Tire Concerge Service, who signs one up for Michelin On-Call sells the tirs way cheaper than FMCA.

Dave Ward, NTCS, found a 365 for a Newell owner a few months ago that he could not find in 2 days of calling around. Let me know if you need more info on this.

All the best.
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