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Open Roads Forum  >  Class A Motorhomes

 > Fleetwood air brake/jack leveler issue

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Mr4aces

California

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Posted: 08/03/21 05:24pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 2018 Pace Arrow diesel on a freightliner chassis. Its has an intermittent problem that causes big headaches- intermittently.

This is the scenario: Occasionally running down the highway the air brake alarm will starting beeping, which is the alarm that is supposed to tell me that the unit has the air brake released but not in gear, or conversely that the unit is in gear but with the air brake engaged. I can relieve this alarm by sounding my air horn, thus releasing some air and the alarm goes away.

Also- and more of a headache- sometimes the Powertrain leveling jacks do not recognize that the air brake is engaged, so the control board will not energize. More often than not this also can be relieved by hitting the air horn. Which my camping neighbors appreciate. However on one occasion I could not get the powertrain levelers to recognize the air brake, thus the slides would not retract and the levelers were stuck down. Even putting the unit in drive gear did not retract the jacks. After a lot of plugging, unplugging, hot wiring slides, etc, the jacks retracted. But the mobile service tech and myself are not sure what we did to get this to happen.

So- frustrated and scared of getting stuck again- I sent it to the freightliner service center. After $900 and a lot of troubleshooting, they determined it was a fleetwood problem, everything on the freightliner side checked out, Just for my own satisfaction I personally replaced the air brake switch under the dash for $ 40 but it did not change anything. So then I sent it to an authorized fleetwood rv service center, who in turn can not find the problem but say it must be on the freightliner side.

That is my dilemma. Has any fleetwood owners or freightliner owners had as similar problem? Does anyone have any suggestions what to troubleshoot next?

Thanks!

Trackrig

Spent the summer in Conconuly, Wa, MH now in Vanco

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Posted: 08/03/21 11:50pm Link  |  Quote  |  Print  |  Notify Moderator

Have you checked that your hydraulic fluid is full on your leveling system. Mine would set off the alarm occasionally. The fluid level looked plenty full to me, but I put in about a quarter cup into the leveling tank and the alarm has been quiet for four years.

Bill


Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.


Scottiemom

Florida

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Posted: 08/04/21 07:09am Link  |  Quote  |  Print  |  Notify Moderator

Our experience with the freightliner service center in Gaffney was that it was little more than a Jiffy Lube. They did not find the problem we took it there to diagnose and were not interested in looking for it.

Dale


Dale Pace
Widow of Terry (Teacher's Pet)

2014 Ford Flex
2004 R-Vision Trail-lite 213 (MinnieMee)
Fulltimed for 15 years, now living in Florida

http://www.skoolzoutforever.blogspot.com/
Where are we?


Mr4aces

California

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Posted: 08/04/21 08:02am Link  |  Quote  |  Print  |  Notify Moderator

Bill- thanks for the reply. That's interesting about the fluid level. So easy and cheap I will definitely top my reservoir off and see if that helps.

Mr4aces

California

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Posted: 10/25/21 03:08pm Link  |  Quote  |  Print  |  Notify Moderator

Ok! I'm not sure anyone cares but I will post this info in case some other poor soul encounters my problem and the ultimate fix.
As i said I went to REV in Oregon. This is a good service center with good staff. They never really identified the problem but unplugged and replugged my harnesses, did a hard reset on the leveler panel and the system worked as it should ..... until we moved about 30 miles to a new campsite. Then, it was the same problem: Powergear would not recognize my parking brake on until I tapped the air horn a couple times. Called back and the service advisor suggested the powergear control boards. Frustrated I said I'm heading 1000 miles home and I will have a local tech check that out.
But the RV gods intervened! (is there such a thing?) On the way home I got a radiator hose leak and took the unit to Freightliner for repair. I mentioned the air brake switch alarm, and during their repair the tech had to hit the horn to open the rear slide to access the radiator hose, This led the frieghtliner tech to run a diagnostic check and eventually found that an 80 pin communication connector located on the bulkhead(right under the air horn!) had not been seated properly and damaged pins were causing misreads. He unplugged, repaired and replugged. All is well! Evidently blasting the air horn either vibrated the connector enough to allow the electrical connection or perhaps sent some electrical charge thru the affected plugs.
What a blessing to use my jacks and slides without having to wake the whole campground up with an air blast. So far so good and it was worth the trip to finally solve this problem.

For folks with a freightliner chassis this connector plug is up under the dash behind the air brake switch. Accessed thru the inside of the coach. Not easy to get to but what is in a motorhome? If you took the time to read this- Thanks and happy motoring!

JRscooby

Indepmo

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Posted: 10/25/21 04:12pm Link  |  Quote  |  Print  |  Notify Moderator

Thank you! Way to often a problem stumps everybody and we never know it was solved, let alone what the solution was. The likelihood of somebody else having the same problem is low, but when I read I was thinking about how the slight change in air pressure could affect switches...

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