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01-24-2022, 08:29 AM
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#155
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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I forgot to mention that airbags air up immediately each time I returned switch to up position.
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01-24-2022, 08:44 AM
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#156
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 12,756
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I scrolled through this thread and finally found where you posted the engine make/model/year about half way through. You might want to put your coach engine information in your signature line.
You have a 1999 Cummins 8.3L engine.
You can go onto the Cummins Quickserve site and create an account. Then put in you engine SN and you will have info to lots of information including the compressor. https://quickserve.cummins.com/qs3/p...rts/index.html
With enough digging you can get a part number and it may possibly have a complete breakdown of serviceable parts including the unloader valve. I seem to remember someone posting that it can be removed separately without removing the compressor.
I just looked at the compressor on mine and the compressor head assembly can be replaced separately.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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01-24-2022, 09:03 AM
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#157
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Quote:
Originally Posted by jacwjames
I scrolled through this thread and finally found where you posted the engine make/model/year about half way through. You might want to put your coach engine information in your signature line.
You have a 1999 Cummins 8.3L engine.
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You can go onto the Cummins Quickserve site and create an account. Then put in you engine SN and you will have info to lots of information including the compressor. https://quickserve.cummins.com/qs3/p...rts/index.html
Thank you! ��
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01-24-2022, 09:06 AM
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#158
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 12,756
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I'm on the side lines cheering you on. Hope you get this fixed quickly!!
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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01-24-2022, 02:49 PM
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#159
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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UPDATE Back in action
The mechanic determined that there is some kind of obstruction in the air tank plumbing up front.
To get us in the road he inserted a temporary line between 2 of the tanks and everything is now working normally.
I plan to continue with our vacation, and upon returning home i will take to Spartan to have it all
Put back to stock.
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01-24-2022, 02:51 PM
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#160
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Senior Member
Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Jul 2005
Location: USA
Posts: 4,398
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Happy trails, Rollie. Better days are comin'!
__________________
TandW
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01-24-2022, 03:04 PM
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#161
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Thank you
����
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01-24-2022, 03:16 PM
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#162
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Senior Member
Join Date: Oct 2018
Location: North Tx
Posts: 670
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Quote:
Originally Posted by Roland Trombley
The mechanic determined that there is some kind of obstruction in the air tank plumbing up front.
To get us in the road he inserted a temporary line between 2 of the tanks and everything is now working normally.
I plan to continue with our vacation, and upon returning home i will take to Spartan to have it all
Put back to stock.
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Great news ! Wish you could have found this mechanic first.
__________________
2020 Newmar Ventana 4369
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01-24-2022, 04:42 PM
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#163
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Senior Member
American Coach Owners Club
Join Date: Apr 2016
Location: North Florida
Posts: 2,382
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Woo-hoo! I knew you'd win!
There's a check valve between the wet (supply) tank and both the primary and secondary tanks.
Since dryer had already gone to lunch, I'll bet the check valve is rusty, trashy stuff stuck in it...
But that's another day.
Please let us know you made it home safely!
__________________
1999 American Eagle
ASE med/heavy certified technician
ASE advanced diesel certified
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01-24-2022, 04:49 PM
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#164
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Thank you for all of your support!
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01-24-2022, 05:28 PM
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#165
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Member
Join Date: Nov 2016
Posts: 95
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Hip hip hooray. Glad you’re back on the road!!
__________________
2013 Forest River Berkshire 390RB-60
Toads-2002 Jeep Wrangler SPORT or 2016 Ram 1500
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01-24-2022, 06:29 PM
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#166
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe
Posts: 6,705
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Great to hear you are on the road again! Have a super time for the rest of your trip home.
Lots of great people on this forum.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand! 
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01-26-2022, 02:32 PM
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#167
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Senior Member
Join Date: Jan 2009
Location: Michigan
Posts: 128
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Latest update
Drove from north of Atlanta to Valdosta yesterday. Everything worked perfectly. Highway traffic, stop and go traffic. All went perfectly. Pressures moved between 90 and 125 as I drove, based upon brake usage.
Last night when trying to level the coach it was necessary to raise the left front wheel off the ground and I thought nothing of it. This morning I started up to head out to St Petersburg and could not get pressure over 75 pounds.
Been trying it through the day and now it won't go above 45.
Can't find a mobile service near here (Valdosta).
Called the only shop willing to look at it and the guy looked underneath for 5 minutes, no tools or anything, and said I need a new comoressor, so it must be towed 20 miles.
Can't understand how one day it pumps to 125 and the next day it won't, and the next day it will...
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01-26-2022, 02:59 PM
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#168
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Senior Member
Join Date: Mar 2019
Location: Lansing MI
Posts: 2,569
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Roland, I'm no air system expert but I'm with you I wouldn't think it's the compressor. I'm thinking it is likely there is another restriction in an air line or some such thing. In my world 5 minutes is not enough time to properly diagnose any problem like you are having. BTW there used to be a pretty good BBQ restaurant in Valdosta called the Smokin Pig. Good luck.
__________________
An Old Fisherman
2017 Nexus Ghost 36DS, 2004 Ford F150 Long Bed
2007 Harley-Davidson Ultra Classic
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