Air Bag Compressor

rocket1lf

450+ Posts
Dec 7, 2013
544
220
Hot, Arizona
Name
Rick
I need some help. My air bag compressor quit working. It blew a fuse yesterday. The motor is getting very hot. At first I thought it was the rocker switch because it doesn't click into place when pushing it to increase or decrease pressure. It will work to lower the pressure, it's now at zero, but not increase it. It won't pump it up to the default 15 pounds. I'm thinking it's getting power to do that because the motor is hot. Any suggestions? Thx Rick
 
Rick if the motor is hot and not working it sounds like a short yo me. You can try taking the motor apart to see what the issue might be, but I expect you are going to end up rigging up a replacement. Good Luck
 
Thanks Ted. Any suggestions on where I can find a motor? The rocker switch doesn't seem like it will be a problem as there are several on Amazon and other places. I did tap on the motor and now it doesn't seem to be getting hot anymore, but it still won't run. I'm pretty sure the rocker switch isn't making very good contact as I've been having problems, but the motor should still run to pump it up to 12-15 pounds when the key is turned on.

I probably have a couple of problems. I'll pull the motor out and see if I see a lose wire or something else under the cover. It looks like it may be fun as two of the phillips head mounting screws are under the cross tube. TMS must have put everything together and then welded the compressor mounting bracket to the tube.
 
Sorry Rick no suggestions except maybe see if TBMS might still have one. If they do I expect it would be pricey. I think it should be rather easy to make up your own replacement. Might not have the auto inflate but they use pumps like that for air shocks on 2 wheelers. I put one on both my neighbors CVO that they wanted air suspension on. Power and a double throw switch along with the plumbing. If the rocker switch is still good then it really should be easy.
 
I'll give TBMS call to see if they have any suggestions on what else to check. I'll also ask them if I need to take out a loan to pay for another pump, if they have one.
 
Just a thought but, maybe try readjusting the pressure switch as it could be stuck. Remove rubber plug on bottom and allen wrench to adjust your start up pressure. Tomg
 
Good morning

I believe the compressor is a viair or something

like that they have many models to choose from.

kits are about 90 dollars. take it out and bench test it.

Dragon
 
Just a thought but, maybe try readjusting the pressure switch as it could be stuck. Remove rubber plug on bottom and allen wrench to adjust your start up pressure. Tomg

Thanks Tom. Since I'm not familiar with that adjustment, where is it located.
 
Good morning

I believe the compressor is a viair or something

like that they have many models to choose from.

kits are about 90 dollars. take it out and bench test it.

Dragon

I'll have to try that and find the company. Thx I do have a call into Richard.
 
20151111_185601.jpg
Thanks Tom. Since I'm not familiar with that adjustment, where is it located.

The silver cylinder with the yellow tag has the plug in the bottom, just put a flat blade screw driver under the rubber and pop it down and out. Allen wrench maybe a 5 or 6 mm or sae I don't remember. Hope this helps. Tom
 
View attachment 99983

The silver cylinder with the yellow tag has the plug in the bottom, just put a flat blade screw driver under the rubber and pop it down and out. Allen wrench maybe a 5 or 6 mm or sae I don't remember. Hope this helps. Tom

Thanks Tom. I think the motor is shot. I put 12v to it and it did nothing. It does have a good ground. I'm going to order a new motor and switch. I got three out of the four screws out, but the back one by the head is a real bugger. I gave up when it hit 117degs. I have no idea how I'm going to get them back in. I sure wish there was a schematic on how the wiring got from the switch to the motor as the wires on the switch are different colors than over by the motor. Rick
 
Good luck, hope all comes out well for you. Also the tubing is push in and push in the outer plastic ring to release the tubing.

tomg
 
That would be Vintage Air.

Good morning

I believe the compressor is a viair or something like that they have many models to choose from. kits are about 90 dollars. take it out and bench test it.
 
Mine has a different name on it than Viair, but it looks like a Viair 92. I ordered one including the switch. I don't have any voltage at the compressor when I turn the key on and when I do hit the switch, I only get between 8-9 volts. I'm thinking there must be a relay somewhere. Does anyone know how the circuit works and if there is a relay in it somewhere, where is it? The compressor still doesn't work when I put 12 volts to it. Thx Rick
 
Mine has a different name on it than Viair, but it looks like a Viair 92. I ordered one including the switch. I don't have any voltage at the compressor when I turn the key on and when I do hit the switch, I only get between 8-9 volts. I'm thinking there must be a relay somewhere. Does anyone know how the circuit works and if there is a relay in it somewhere, where is it? The compressor still doesn't work when I put 12 volts to it. Thx Rick

Probably one that is under the seat on part of the frame rail that goes from left to right, mine had 3 relays attached there. Call Richard at TMS and ask him. Tom
 
Probably one that is under the seat on part of the frame rail that goes from left to right, mine had 3 relays attached there. Call Richard at TMS and ask him. Tom

I looked under the rail but I didn't see any relays. I'll have to look again. I called Richard yesterday and left a message. He didn't return my call. I just called now and no one answered the phone, it went to the answering service.
 
They are on Texas time. Troope is just south of Dallas. Also they are closed on Friday last I knew.
 
There used to be a thread on here on how to test the air system. it was from richard i think

the compressor is rebuildable. Did richard get back to ya

Dragon
 
There used to be a thread on here on how to test the air system. it was from richard i think

the compressor is rebuildable. Did richard get back to ya

Dragon

I didn't see anything about testing the system when I did a search. New compressor was only $90.00, so it wasn't worth rebuilding it. It's due here Saturday. I think the compressor is shot because I couldn't get it to work putting 12v directly to it. I would like to make sure the rest of the system is working properly before I install it. Haven't heard from Richard. Rick
 
Does anyone know how this circuit works? I called Richard two days in a row and left messages with no return call. I guess we may be on our own with our machines. Rick
 
I got it out this morning and took the hose off. Turned it right side up. It sparked, started up and blew a bunch of stuff out the piston outlet. It still doesn't try to pump up to the 15 pounds that it should when you turn the key on. I can barely blow through the hose in both directions, so I think the check valve may have some garbage in it. I'm going to replace that too. I still need to figure out why it doesn't pump up when I turn the key on. Rick
 
I got it out this morning and took the hose off. Turned it right side up. It sparked, started up and blew a bunch of stuff out the piston outlet. It still doesn't try to pump up to the 15 pounds that it should when you turn the key on. I can barely blow through the hose in both directions, so I think the check valve may have some garbage in it. I'm going to replace that too. I still need to figure out why it doesn't pump up when I turn the key on. Rick

Mine doesn't do anything until I press the switch. Never has pumped up automatically. It holds pressure for 2-3 days.
 
Here's what I've found out so far. The compressor wasn't pumping until I removed the hose and turned it head up. It sparked, blew some stuff out of the head and started working.

The pressure switch that is supposed to pump up the compressor when you turn the key on wasn't working. I jumped across it and the compressor started. The hose with the check valve in it is very hard to blow air through with the flow going to the manifold and it's the same blowing the opposite way, so I don't think the check valve is working.

The switch on the dashboard was intermittent. So far, I replaced the switch and it works now. I just received a new compressor and it has a check valve on it. I ordered a new hose without a check valve, Viair 92803. I have a new adjustable pressure switch coming from Amazon. Hopefully everything arrives this week and I'll be up and running next weekend.

I'm reading 435 pounds on the reading up front for the air bags now. I hope it's because I have everything apart.

I still have no idea where the relay is that operates everything as I don't think it's one of the ones under the crossbar as I removed all of them and everything in the back was still working and the wire numbers weren't the same.

Rick
 
I finally received all the parts and got it back together. I replaced the switch on the dash, you no longer heard a click when engaging it and it was operating intermittently. Now the compressor runs every time I push it. I replaced the compressor, it was locked up. I replaced the compressor line to the manifold. It was very hard to blow through in both directions. so I figured the check valve was stuck partially open. I replaced the pressure valve that turns on the compressor when you turn the key on, it wasn't doing anything when you turned the key on. I now have it set to pump up the bags to 16lbs when the key is turned on. The moral of the story is that everything works again. Yeah!

I still don't have a clue where the relay is that operates everything or where the wires go.

Rick
 
Just an update. I let it sit since last Saturday. I went out for a 200 mile breakfast ride this morning. I turned the key on and the compressor kicked on and off for about 1 second and the gauge was still at 16 pounds like I set it at last Saturday. I set it at 20 for the ride and it stayed there. I used to have to set it 6-8 pounds higher and it would fall back a couple of times before it would stabilize. I know everything I replaced was bad, but I'm thinking the pressure changing was caused by the air line check valve not sealing. Air was probably going back into the compressor and bleeding out the intake. If anyone wants to know where I got everything, just let me know.

Now I have a problem with the cruise control. The system turns on and when I push the set button, the dash light comes on. I hope the cruise control module is just stuck like it happened before. I don't think anything I had apart caused the problem unless the relays under the cross bar under the seat are for the cruise control and something happened to them when I had those apart thinking they had something to do with the compressor circuit.

Rick
 
Rick post the info on the compressor just in case someone needs it. nice to have it right there.

Those relays do not effect the cruise. If the system shows it's setting but not working I would look at the servo under the hood. Maybe the cable broke or something
 
Hello

I just got done dealing with cruise problem. there is a test where you can see what is wrong. with a selection series on the cruise buttons press on then within certain time press another button. don't remember series. Do your brake lights work, does horn work. i am thinking clockspring

Dragon
 
Hello

I just got done dealing with cruise problem. there is a test where you can see what is wrong. with a selection series on the cruise buttons press on then within certain time press another button. don't remember series. Do your brake lights work, does horn work. i am thinking clockspring

Dragon

Thanks, I have that test, but every time I've tried to use it I got funky results. Rick
 
Here's a list of parts I used and where I got them. The compressor, pressure switch and rocker switches came from Amazon and the SS air line came from Summit Racing because I couldn't find it on Amazon.

51-oQ9NmGTL._SS142_.jpg


Viair 92C Compressor Kit with check valve

41FNDFEVnpL._SS142_.jpg


LEFOO LF20 Extended Duty Pressure Switch 10psi±2psi Adjustable High Pressure Switch Oil Pressure Switch Vacuum Pressure Switch

I got 2 of these so both switches would match.

KEING Momentary Waterproof Rocker Switch Toggle - ON/OFF/ON Blue LED Light - 12V 20Amp 24V 10Amp, 7 Pin For Automotive Cars Vehicles Marine Boats Trucks Trailers 4x4 Caravans RVs SUV ATV UTV & More



Viair Corporation 92803 - VIAIR Braided Stainless Steel Leader Hoses
 

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