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05-17-2014, 07:33 PM
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#1
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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Need help finding the air compressor pump location on my 1985 A/345
I recently bought a 1985 34.5 ft Airstream 345 and I noticed the back axle wasnt down so I started searching for the switch to lower it and to try to find the compressor for it...Does anyone know where it is and how to use it...I dont see the location in my manuals and I also dont have power to my Coleman 7000 generator from using the start and stop or start generator buttons.. trying to figure everything out All help would be appreciated!
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05-17-2014, 08:00 PM
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#2
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Rivet Master
2010 22' Interstate
Anchorage
, Alaska
Join Date: Mar 2010
Posts: 516
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It seems AS has not made manuals going back that far available for download from their website. Suggest you contact Customer Support and request one. Ask for Jim Parrett.
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- wayne
2010 Interstate 3500 Twin Bed
(2008 Freightliner CRD Sprinter)
AIR #44779
TAC AK-1 !!
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05-17-2014, 08:11 PM
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#3
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2 Rivet Member
1987 34.5' Airstream 345
Hendersonville
, North Carolina
Join Date: Jan 2004
Posts: 88
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Hi TLHolley, and welcome to the Airstream Forums!
The back axle not going down is an issue not related to the air compressor but rather the leveling system not releasing pressure from the rear air bags. The system is designed to keep the bags inflated from 70 psi (cut in psi) to 80 psi (cut out psi). A good system will stay inflated for days. If you need to manually add or release air bag pressure, look for a small schrader valve located on the right side just forward of the rear wheels (mine is directly above the right exhaust pipe).
The air compressor is located at the right rear of the coach under the mattress, you will have to remove the support paneling to get to it. The compressor will turn on automatically when the key is in the ignition position, you will see a red air pressure light come on (left side of the dash) when the compressor is running. The pump stops automatically when the bags reach 80 psi. Your front bags are manually filled, keep them at 55 psi when driving.
Sorry, can't help you with the Coleman generator, these units came with Onan 6500 generators, your owners manual will have the interior switch wiring to remotely start the generator (one switch is on the dash, the other on the control panel above the galley sink). You should also be able to start the generator locally from inside the generator bay.
Good luck, I have manuals on everything that came with my 1987 345, many are on the forums in PDF format, let us know if you need help with anything!
__________________
BubbleHead Fred
"Underway is the only way!"
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05-17-2014, 08:58 PM
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#4
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Dazed and Confused
Currently Looking...
1983 31' Airstream310
Hillsburgh
, Ontario
Join Date: Sep 2012
Posts: 3,805
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Buckwheat is right about the levelling system being fully automatic. Once the frame droops down enough to warrant more air the tall metal lever activates the air levelling valve (very much like the works in your toilet, same principal).
However it does seem like your compressor isn't working. Start by checking fuses if it's not working, once the ignition key is turned to Acc. If you find that the compressor needs replacement, this is the one I chose……
ARB On-Board High Performance 12 Volt Twin Air Compressor (CKMTA12)
Pricey, but excellent build quality. ARB has been making off road equipment for decades in Australia. Designed for the dusty unforgiving Outback, it should give me many years of service. I also plumbed in a hose reel with air line in my back storage for pumping up shocks, tires, inflatable toys…..errr I meant inflatable water toys, etc, etc. With a couple of 5 gallon aluminum tanks I can run air tools.
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05-17-2014, 09:41 PM
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#5
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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Thanks guys
Mine has the Queen size bed in the rear instead of the two smaller ones and I found the water pump underneath there under a little panel u lift off but still unsuccessful finding the air pump...So does the tag axle come up and down on its own? or do you do it manually? I still havent found a switch for it either
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05-17-2014, 09:55 PM
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#6
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Rivet Master
2016 Interstate Grand Tour Ext
Wildwood
, Florida
Join Date: Oct 2009
Posts: 1,236
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Look in the back passenger side of the coach. If you have a year queen there is some wood cabinet piece that make the back of the coach square for the bed. It is most likely behind this. I will look through my picks tomorrow and see if I can find one that shows it. The panels come off to gain access. Not easily, but the come off.
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Dave and Felicia
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05-17-2014, 10:05 PM
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#7
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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I also found where a air hose hooks up in the passenger side far rear compartment is that the valve you were talking about? or is that used to pump up tires etc?
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05-18-2014, 07:22 AM
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#8
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2 Rivet Member
1987 34.5' Airstream 345
Hendersonville
, North Carolina
Join Date: Jan 2004
Posts: 88
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Compartment connection is for air hoses, I use that one with a coiled air hose to pump up the front air bags and to top off the tires. Look for a small metal valve stem (similar to a car tire valve) that is mounted in the A/S skin just above the right side exhaust pipe (between the rear wheel well and the storage compartment forward of the wheel well).
__________________
BubbleHead Fred
"Underway is the only way!"
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05-18-2014, 08:28 AM
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#9
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Rivet Master
2016 Interstate Grand Tour Ext
Wildwood
, Florida
Join Date: Oct 2009
Posts: 1,236
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Here are some pics (not great, but you will get the idea of where your compressor is:
This shows the bed looking after. Since you have a 345 yours should be a side to side queen (called east west) where mine is a fore aft. If you notice on the left side just peeking out behind the black lift arm for the bed there is a grate. Or at least the very upper left corner of it.
Here is a shot with everything removed. You can see the air compressor on the left (grey cylinder thingy by wood wall). The grate is leaning up against the back wall to the right of it and you will notice some firing strips screwed into the wood partition above the air compressor. They held on the little cabinet that covered it and the front of it was the grate to allow it to get air.
I also pm'd you. It is a fairly steep learning curve but manageable with all the fine folks here on the forum!
__________________
Dave and Felicia
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05-18-2014, 10:32 AM
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#10
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2 Rivet Member
1987 34.5' Airstream 345
Hendersonville
, North Carolina
Join Date: Jan 2004
Posts: 88
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Wow Dave, that's some serious restoration work! Our new guy will either be intrigued or wondering just what kind of mess he's gotten himself into. Life is an adventure, keeping these beasties rolling is one of the best. It truly is either a labor of love or a huge buyers regret. Stick with it long enough and you become an electrician, a plumber, a carpenter, a mechanic, the list goes on. No pain, no gain, no adventure. The forum is FULL of adventures! Happy trails to all!
__________________
BubbleHead Fred
"Underway is the only way!"
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05-18-2014, 10:39 AM
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#11
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3 Rivet Member
1981 28' Airstream 280
Austin
, Texas
Join Date: Feb 2014
Posts: 144
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Wow in my 280 it's located in the rear drivers side compartment with my electrical cord. Very easy to get to. Glad I don't have do do as much to get to it.
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05-18-2014, 10:59 AM
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#12
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2 Rivet Member
1987 34.5' Airstream 345
Hendersonville
, North Carolina
Join Date: Jan 2004
Posts: 88
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So bag to the original problem of the "back axle wasn't down"... are we talking tag axle (with the single wheel) or the rear drive axle (dual wheels). If your tag axle isn't going down (are the wheels touching the ground?) then you have a whole 'nother world of problems, but air bags and compressors are not the culprit for that. For the rear drive axles, as long as the air bags are inflating to 80 psi then you have no issues, do not worry about taking air out of the bags. You can measure the bag pressure using the external air valve shown in my previous post. Attached are pics from an old DIY thread once hosted on thisoldrv.com, which sadly no longer hosts RV material. You can see from the pics what full and empty air bags look like. Have fun, get dirty!
__________________
BubbleHead Fred
"Underway is the only way!"
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05-18-2014, 12:09 PM
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#13
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by buckwheat
So bag to the original problem of the "back axle wasn't down"... are we talking tag axle (with the single wheel) or the rear drive axle (dual wheels). If your tag axle isn't going down (are the wheels touching the ground?) then you have a whole 'nother world of problems, but air bags and compressors are not the culprit for that. For the rear drive axles, as long as the air bags are inflating to 80 psi then you have no issues, do not worry about taking air out of the bags. You can measure the bag pressure using the external air valve shown in my previous post. Attached are pics from an old DIY thread once hosted on thisoldrv.com, which sadly no longer hosts RV material. You can see from the pics what full and empty air bags look like. Have fun, get dirty!
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Tag axle equipped Airstream motor homes have now become an issue, since torsion axles only last about 25 years.
When they fail, extra weight is placed on the drive axle, that exceeds it's rating and can and does cause additional damages.
Tag axles must be replaced along with their shocks and leveling valves.
Until recently, those tag axles were no longer available, but now are.
They are not cheap, simply because of the special brackets and other parts that come with them.
The only part for the tag axle that is now history, is the 10 lug 12 inch drums.
They can be made, but who wants to buy 100 of them?
Andy
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05-18-2014, 12:12 PM
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#14
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by tlholley
I recently bought a 1985 34.5 ft Airstream 345 and I noticed the back axle wasnt down so I started searching for the switch to lower it and to try to find the compressor for it...Does anyone know where it is and how to use it...I dont see the location in my manuals and I also dont have power to my Coleman 7000 generator from using the start and stop or start generator buttons.. trying to figure everything out All help would be appreciated!
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The air compressor, most always is located in the generator compartment.
Andy
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05-22-2014, 04:20 AM
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#15
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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Hey guys..I have been working n this beauty and I will post some pictures today if I can..Dave my Queen size bed doesnt have the lift arms like yours it just has two pieces of plywood with screws in it and I didnt see anything under there of course I could have missed it...I got the generator up and running great it works from inside both buttons etc! The rain held me up yesterday today I will further look for the compressor and I will look in the generator compartment.. I found the air tank in between the back axles underneath.. and on the passenger side in the back compartment there is a fitting like thing where u hook a air hose in which if my compressor is in the rear I would think it would be on that side looking at daves pics! you guys are the greatest stay tuned...
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05-22-2014, 04:39 AM
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#16
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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Also what is the best stuff to use to shine this girl up? It is actually pretty clean but I would like to wax it or shine it up...
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05-22-2014, 08:16 PM
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#17
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2 Rivet Member
1987 34.5' Airstream 345
Hendersonville
, North Carolina
Join Date: Jan 2004
Posts: 88
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Here are pics of the air compressor location under the east-west queen bed of our '87 345. The compressor and the fresh water pump are located together under the rear most curb-side corner of the bed panels. Shown here are the areas under the bed panels, the large black box is the storage compartment where you found the air connection, mounted on the end of the box are the various air compressor switches, and finally the air compressor and water pumps together. We still have the original dual piston Dana compressor that was also used on the GMC motorhomes in the '70s. It's very easy to rebuild, http://www.gmcmotorhome.com/tech/compressor/index.html
For general exterior cleaning we use a mix of warm water and white vinegar (1/4 cup vinegar per gallon of water. This does a great job of removing mold and other organics. We then use an extendable soft truck washing brush connected to a hose, along with Kit Car Wash with Wax to do the final wash/wax in one step. Wash with the aluminum grain to avoid scratch marks, do a very thorough plain water rinse, towel dry.
__________________
BubbleHead Fred
"Underway is the only way!"
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05-22-2014, 09:55 PM
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#18
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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Thanks Buckwheat! I found my compressor today it was underneath the dresser drawers on the far left passenger side of the vehicle... had to move the mattress so i could get the drawers out an then i opened up the bigger door to the right and there was a wood cover over it... i jumped it across the solenoid and the pump started running ... tried to upload some pics and couldnt figure it out so if someone will tell me how I will post some pics in case anyone else has this problem... I think i found the pressure switch aso
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05-22-2014, 09:56 PM
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#19
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1 Rivet Member
1985 34.5' Airstream 345
bidwell
, Ohio
Join Date: May 2014
Posts: 10
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also i mean... and thanks to Dave for speaking with me on the phone and walking me through everything
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05-23-2014, 07:07 AM
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#20
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2 Rivet Member
1987 34.5' Airstream 345
Hendersonville
, North Carolina
Join Date: Jan 2004
Posts: 88
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Used the "Go Advanced" button on the "Quick Reply" box to do your message, scroll down to the "Additional Options" and find the "Manage Attachments", from there you can select files on your PC to upload.
__________________
BubbleHead Fred
"Underway is the only way!"
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