RTS Front Air Bag Part Numbers...

[Hartley]

Hi all,

A buddy emailed me asking for the part numbers for the old style
front left and right air bags for his RTS.

This is one of the early RTS chassis with the Independent Front Suspension.
Not the newer solid axle version. ( 1-Bag per side )

I would say probably 82 or 83 model T80204 would have the right air bags.

I disposed of my parts manual when I disposed of my RTS a couple years ago
and have no way to look them up. I think they were Firestone brand.

Dave.....

[TomC]

Go to Firestone air bag web site-they have a giant sized table of their air bag application.  Good Luck, TomC

[HighTechRedneck]

My parts manual says the following for 1979-1986

Part# 2090412 Front Spring Assembly, includes air spring, retainers and piston (replaces 2052623, 717682, 792844) AS28-2-032

Individual components:

2054879 - Air spring AS4-28-3-007
2054880 - Lower retainer  AS4-20-6-072
2054881 - Piston AS3-20-7-050
2054882 - Upper retainer AS3-20-8-080

Note:  When replacing 717682 or 792844 with 2090412, you also need:

107827 - 3/4-16 Nut, Type R stamped (Spring Steel)
696464 - R.H. - Elbow (11/16-20) Male (45 degrees) (Pro Loc) 269NTA-8-4
657592 - L.H. - Connector assembly (Thread Size 1/4 straight thread 17/32-24 hex 5/8 hex 9/16) 68NTA-6-4
2436168 - Washer - Flat 3/4 inch (zinc) W-834

HTH

[RTS/Daytona]

From the Yahoo RTS Bus Nuts Board - under files-->parts--> airbags

Air Bag Part #s / prices / Supplier as of 2006??

Midwest bus -- 800 627 6627 ask for TOM
Mohawk MFG --- 800 323 7652 ask for George
MCI Parts ---- 800 323 1238
BusFix ------- 888 287-3499 (very high priced parts)

RTS 01-06 rear. airbag asm-> G1019358 $54@Midwest $076@Mohawk $ 97@MCI

RTS 01-04 front airbag asm-> G1050310 $97@Midwest $101@Mohawk $146@MCI

RTS Mdl06 front airbag asm-> G1015009 $73@Midwest $102@Mohawk $136@MCI

[Chris 85 RTS]

I just replaced my front air bags on my 85 RTS with IFS.  Here is a post of mine from the Yahoo Group RTS-bus-nuts:


http://autos.groups.yahoo.com/group/RTS-bus-nuts/

My first post about ordering:

I then called Midwest as their website appears to be done. The girl I
talked to did not have the part number in the list in their system.
She then suggested that I could talk to Tom but he was not in. I asked
when he'd be back, and she said maybe tomorrow.

I then called Mohawk and talked to Otto. He had the part number, had
them in stock, same price as shown in the file, ship them tomorrow,
shipping is free over $50. He then asked about my bus, told me all
about Mohawk. Nice guy.

Another post

I dealt with Mohawk back in June for my airbags and could not have
been happier. Here is a copy of that post. Perhaps we need to pic a
guy and only deal with him. Make him our rep.

"I then called Mohawk and talked to Otto. He had the part number, had
them in stock, same price as shown in the file, ship them tomorrow,
shipping is free over $50. He then asked about my bus, told me all
about Mohawk. Nice guy."

Also some details on the replacement:

So I replaced my IFS airbags this weekend and of course it was not
without troubles. My old airbags could only be described as
horrible. I can't believe they held air at all. See the pics in the
Photos section.

So it is just like Wulf said. Remove wheel, disconnect air lines,
remove two bolts (1 1/18 socket) retaining upper control arm into
frame, swing (with crow bar) upper control arm up, reach into upper
frame access hole to remove air line, remove two stamped nuts which
retain upper bag plate, remove lower nut, remove bag, then put
everything back. In Florida heat it took me maybe 2.5 hours for the
first side. I did the left side first which is actually the easier
side for a IFS. I also had a little help, see pics.

Now onto the right side. On the IFS the right side is the kneeling
side. To kneel, they take the air line from the leveling valve
output, route it back through the frame to the compartment behind the
front wheels (radio compartment on 40'ers), there they mount the
kneeling stuff, then back to the airbag. They use a 90 degree
fitting on the airbag nipple, so to remove this bag you have to
remove this fitting to get the bag out. Well, my wrench slipped and
I gunched up the fitting but thought I could fix it with a round
file. Took me about 2.5 hours to get it all back together and
everything aired up just fine.

Later that afternoon I discovered my fitting repair did not work as
the right front bag was flat. So, this morning I took it all apart
again to fix the fitting ( I checked the fitting with soapy water and
it was leaking like crazy. Well, when I removed the kneeling stuff
years ago, I removed the valves and solenoids and left the air lines
routed to the radio compartment. I decided that if was going to go
through all this trouble again, I'd might as well remove the extra
lines and just route the line directly from the leveling valve to the
bag just like the left side. I got lucky and found a fitting and new
compression ferrels in my old bus stuff box. Put it all back
togther, tested the fittings with soapy water, all was good, got it
done in about 3 hours, getting the upper arm back on was tough this
time for some reason.

Much to my dismay, after taking the afternoon off to entertain the
kids, that freaking darn bag is flat again. So, I guess it is back
under there again another day. My new impact wrench is sure getting
a workout.

Arg!

And more ...

Third times a charm? So it was back under the wheelwell last night.
I had probably a double failure of the leveling valve. Never even
suspected it since it was shinny new looking. I sprayed it down with
soapy water, and saw tiny bubbles from the valve body to mounting
bracket interface. I grabbed the airlines and tugged on them, and
the bubbles got worse. So, I removed the leveling valve to
investigate.

I connected my shop air to the airbag port, and sure enough, the
valve body to bracket seal was leaking. The mounting bracket is
actually the rear cover of the valve body sealed by a rubber gasket.
The valve body cavity has airbag pressure on it in the normal valve
position. There are 4 small machine screws which hold the valve body
to the bracket. These were loose. I removed the screws, inspected
everything, which looked brand new, replaced the screws, tightened
them, and no more leak.

The other thing I noticed was that once when I hooked up the shop air
to the airbag port, I had air come out the supply port. The inlet
adaptor (a 1" long hex tube) is also a check valve. So, I sprayed
some PB Blaster in it, then shot air through it several times. It
seems to seal just fine now. Maybe a small piece of crud was in
there. But something to keep in mind if you suspension tank is
leaking, and your check valve is not checking, your airbags could
leak back into the suspension tank.

So, this morning, 12 hours later, the bag is still up. Yeah!!!!