Air Ride Compressor Issue

[traveler1980]

Hi All,

I am having a problem with the compressor for the air ride system in my coach. It has an Electro-level 1, but the compressor is a Viair installed by
the PO. When the coach is running (or in the acc position) the compressor tell tale light will come on with the middle switch in Auto and I can hear
a click in the compressor compartment (relay or solenoids?) Unfortunately, that is all that happens. The compressor does not actually come on.

The coach has lock offs and can be aired up from schrader valves above the wheel wells, so not a showstopper but I want to get the problem fixed.

What steps do you recommend I follow to diagnose the issue? I don't want to simply start replacing things. I plan to work on it over the next few
weeks.

Thanks in advance for your assistance!
--
Jamie Sharp
South Central PA (Gettysburg area)
'76 Palm Beach, AKA "Grumble"

 

[scott nutter1]

A couple things come to mind..

1... ground the compressor and bring a direct hot line of power to the compressor and see if it even runs.. if it doesn't.....maybe step #2( plus the
cost of a new compressor)...
2... these systems can be expensive to completely rebuild. Maybe think about a newer upgraded system. Keith V has the microlevel. And Jim Hupy has
his air system, and Jim K has a system. A newer system could be cheaper in the long run..

I like step #2.....
Good luck,
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi. Alex Ferrera
installed MSD Atomic EFI
Houston, Texas

 

[6cuda6]

Did you check all fuses in the "house".....the click is the relay which is good, now you need to see if you have power/ground to the compressor.

If you do and the compressor can be verified as failed then just get a rebuild kit or replace it.
--
Rich Mondor,

Brockville, ON

77 Hughes 2600

 

[traveler1980]

I'll check the house fuses. Does the compressor run off of the house, though? I thought it ran off of the 30amp breaker in the chassis fuse block.
Then again, who knows what's been changed in the last 40 years.

Sounds like the general first step is determine if there's power to the compressor, so that'll be the first thing that I investigate.
--
Jamie Sharp
South Central PA (Gettysburg area)
'76 Palm Beach, AKA "Grumble"

 

[johnny]

I'm betting no power to the ViAir, they last pretty well. As long as the valves work, the system works well - I got on in the 26'. As someone noted,
parts can run to some money. Get power to thye compressor and troubleshoot from there if you need to.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell

 

[justin brady1]

First check for voltage at the compressor. Multimeter.
If you've got voltage at the connection try running power directly to it and see if it runs. If not: bad compressor. (unlikely)

Next I'd have a look at the pressure switch, if it's a new viair switch they do go bad, especially if it's an off brand. The Old ones also go bad as
they are pushing 50 these days and become brittle.

--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455