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61
Technical Support / Re: Air Bag Preventative Maintenance
« Last post by Carl Boger on April 19, 2026, 01:58:14 AM »
Roger,

If you have the tools and room you can do this yourself.  I don't consider this an easy job, and if I ever need to replace mine again I will probably try to hire it out.  You will need to get the coach high enough off the ground to be safe and get good access.  The side panels will hinge up, but some access is still very tight.  The bolts may or may not come out, and the fittings my or may not break.  A company with a pit or lift can make this job much easier.  It really depends on how hands on you want to be.
62
Technical Support / Re: Air Bag Preventative Maintenance
« Last post by Roger Milne on April 18, 2026, 11:13:32 PM »
So interesting this post has come up at this time. So I am parked for the next few weeks and then moving into a new home. We just completed 5 days of across the country driving and knew I had a small leak somewhere as I'd lose tank pressure over night and couldn't keep the leveling system at level for more than a night. So I ran it in travel mode and found one of the air bags in the drive axle is leaking pretty good, so I'm facing replacing them all now as they are all aged.

So I see the chart for the part numbers etc on the Tech Support page, but my question is??? Can these be replaced by the owner? or is this a shop job where they can lift this up with commercial jacks/ I need to find a good truck shop in the Charlotte NC area if that's the case. But before I did that I figured I'd ask if this was something we owners can tackle and if so how??
63
Technical Support / Re: Coolant temp gauge doesn't show any movement
« Last post by Roger Milne on April 18, 2026, 11:08:32 PM »
So we are parked at an RV site for the next few weeks. We just went under contract for a new home in the local area and once we are moved in and settled,I plan on getting this rig in for some air system work and the Thermostat issue addressed. I appreciate al the input.
64
Technical Support / Re: Coolant temp gauge doesn't show any movement
« Last post by Joel Ashley on April 18, 2026, 02:44:56 AM »
I was surprised at your numbers too, Roger.  Especially given your 42’ w. tag running an engine more commonly found in shorter coaches.  Our “little” 37’ w. C9 gets warmer than you report.  Taking Eric’s advice, before too long, would be more than a good idea. 

I’ve had our rig out several times over the Rockies in late fall in snow, nailed by a sudden icy squall going over Mt. Hood to Bend, parked in Idaho Thanksgiving snow, and stuck in a sudden Wyoming plains blizzard.  You need your dash heater, though often less than great (its a long way from engine to dash), working as well as possible should you get trapped for 6-7 hours in the middle of a Wyoming freeway like we did on our maiden voyage.  Hydronics can work better, but not perhaps as concentrated on pilot and copilot, or for defrosting a windshield.

Joel
65
Technical Support / Re: Air Bag Preventative Maintenance
« Last post by Carl Boger on April 17, 2026, 01:19:47 AM »
Gene,

I replaced all 8 of mine at the 20 year mark.  One had blown, luckily in my drive, and I figured that they were all likely in the same condition.  When removing them some looked fairly good, and others had obvious cracks, mostly hidden from the a casual inspection.  Yours may be in better condition, but at 20 years they may be subject to failing.  Just my opinion.
66
Technical Support / Re: Air Bag Preventative Maintenance
« Last post by David T. Richelderfer on April 16, 2026, 06:48:07 PM »
A few years back, I had some front-end repairs done at Chassis Dynamics in Yuma.  While in there, the mechanic noted the four front-end bags were showing some cracks, so I had them all replaced.  The bags don't cost that much compared to the drag link, king pins, and bearings.  I saved several hundred dollars by sourcing the replacement hardware and avoiding the shop's markup by saving them time finding the hardware.
67
Technical Support / Air Bag Preventative Maintenance
« Last post by Gene Obie on April 16, 2026, 06:09:26 PM »
I have 10bag roadmaster chassis and wondering what the collective wisdom is on whether the bags "age out". It's a 21yr old coach and i don't see any significant cracks and don't have any issues with leaking on any of the bags. Just wondering if it's a good idea for preventative maintenance to replace at this point? Coach is stored indoors with bags unloaded off-season about 1/2 the year.

Taking it in for Koni shock upgrade this off-season and just wondering whether to do bags at the same time.
68
Technical Support / Re: Coolant temp gauge doesn't show any movement
« Last post by Steve Huber on April 15, 2026, 04:16:32 PM »
Eric's correct re t'stat. The C9 is speced for a 190 degree t'stat. See attached for C9 specs.
Steve
69
Technical Support / Re: Vorad
« Last post by Michael Wettstein on April 15, 2026, 03:24:37 AM »
We also have a 2008 Beaver Marquis with Vorad.

Our Vorad has been working intermittently and I have been having intermittent J1939 errors leading to Comm errors and sweeping gauges, loss of engine data on the Aladdin, Loss of TCM communication.  It was traced to low resistance across the J1939 data bus pins in the Vorad.

Frank McElroy on the Monacoers forum helped me diagnose the J1939 errors/short.  I sent my Vorad to him and he replaced a component on the board and also replaced the battery that depletes over time even though my battery was still within spec.

My Vorad works again.

To be clear, there was no reprogramming done to my Vorad.  Vorad units that have had the battery die and lost the configuration in the RAM may still be inoperable because the tool the Rick Youngblood had to do the reprogramming is currently not working.
70
Technical Support / Re: Immediate starter engagement
« Last post by Eric Maclean Co-Admin on April 13, 2026, 01:11:56 PM »
Brian
Many of us here carry a spare ignition solenoid which is a common fault item in the forward electrical bay.
That ignition solenoid is also an isolated ground solenoid meaning the internal coil is not grounded to the case of the solenoid
Although the ignition solenoid is rated for continuous duty and is capable of 85 amps making it a little over kill for the starter primary or trigger solenoid it is configured the same way and will work well in that roll.

Also Cole Hersey makes the same continuous duty solenoid in a 200 amp rating with silver internal contacts making it more durable which is a very good alternative for the ignition solenoid in the forward electrical bay.

So you can see if you can only carry one spare that is the one you want

Eric

https://www.colehersee.com.au/product/spst-12v-85a-continuous-duty-solenoid/
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