Will Berninger

14 hours ago, Paul J A said:

Will; My diesel fuel tank was directly behind the steer axle, was 15,160. Fuel full, 14,800-14,900 on the steer . 

I don't know the  weight difference between a 3 and 4 slide that year/ model.  I did run 315's all around. Nitrogen in all tires and used a Power Tank for inflation. Sooo handy. Loved it.

78K + and no issues. 

Yup, 315 all around, you could not easily hurt one of those tires LOL.  

Surprised your tank was still up front in 2007, maybe it was 2008 when they got the move?

Also, I am not sure anything really changed on that front axle between the 2005 and 2007 model other than the extra 500 lbs (or whatever increase it was).  Maybe just a tire rating difference?  

A total wild guess would be in the 300-500 lb range for one less slide.  The only real difference would be the small amount of extra framework and fiberglass for the slide itself and some hydraulics. Normally the slide topper would be replaced with just a window awning if the slide was omitted.   Cabinets and sofa/chairs would be there regardless. 

Thanks Paul,

Will 

1 hour ago, Paul J A said:

This is a C & P from years ago that was presented by several Tire Mfg. rep's at FMCA Rally's.

 I ran 105 steer, 95 drive and 85 tag On our 07 Executive Denali IIIR.  WE were full timing, so we were heavy.

I ran 48 psi on the tag down pressure.  

WEIGH YOUR COACH. Four , or Six corner weight is the best, but single axle weights will be OK too. Fuel and water full. Black and grey tanks empty with your stuff on board. CAT scales at many truck stops. Tell the clerk you want to weigh a coach. There is an intercom at the scale so you can communicate with the clerk. There will be 3 platforms for3 axles. Steer axle on the  first, Drive on the second, and if applicable, Tag on the third. Keep the ****ENGINE Running,**** so you stay at Ride Height. Get the print out from the clerk. IF you have a tag axle, you may have to adjust your DOWN pressure to move weight as needed, and after adjusting your down pressure on the tag, REWEIGH the coach.  Now go to YOUR tire Mfg. inflation charts for the correct COLD inflation.

 

 

 

Paul, curious how much less your coach weighed with the 3 slide setup instead of the 4 slide setup?

105 PSI sounds low for a 295 steer tire but maybe you were running 315's, I don't recall. 

I know I am right against my steer axle limit (14500 or 14600, can't remember which).  Your 07 would have been a 15100 axle as I recall. 

Your tank was also moved aft on the 07 model I believe which helps take weight off the steers.

WB

2 hours ago, 96 EVO said:

You are locking the regulator after adjusting, right?

Yes.  

2 hours ago, Ivan K said:

The regulator pressure should remain steady at which ever preset pressure when the tanks are full, with hwh. That regulated pressure is passed to tag bags through six pack valves in travel mode but there should always be the same regulated pressure to the sixpack ride Hight valves. Raising the whole coach will use tank pressure for tags, lifting the tags will deflate the bags and actuate lifting chambers through a separate mac valve. I keep my tag tires at 85 just to keep the bead seated in sharp turns, that's just me.

Thanks, I will replace the regulator.  It is regulating but something seems off somehow.  I did have to install a new solenoid coil on my right tag lower 6 pack valve a few weeks ago as it was not deflating the right bag when raising the tag.  Left would deflate but not the right, coil was open.  I put a new coil on the old valve body and it works again.  I thought maybe that was contributing to my odd numbers but it had no affect.

I am not sure why I am lumped into the tire pressure discussion.  That was between two other folks.  

Sounds like I have a toasted regulator.  

I will replace it and retry this.  Interesting that manual says that to stabilize the pressure, raise the tag using the tag switch for 20 seconds, then reset it and see what it goes to on the gauge.

This does not work for me so something is up:

file:///C:/Pictures%202023/Motorhome%2005%20C/2005%20Executive%20parts/HWH/Automatic%20Air%20Leveling/tag_axle.pdf

Long read, sorry!

I have questions about the tag pressure regulator.

My original 2005 regulator was right at the cutoff point when Monaco switched from a 60 PSI unit to a 160 PSI unit.  I removed my broken and leaking 60 PSI unit (gauge was broken, regulator leaked) and installed the 160 PSI gauge unit.  Took it to the scales, weighed it, adjusted the regulator up a couple of times till I got all the weights where I wanted them.  Noted I was at 55 PSI on the newly installed regulator, fully loaded with 10 days of dry camping gear, food, water...  This was 2018 and about 60K miles ago.  I have had no driving or tire issues however, "every" time I check the regulator it could be at 60-70-80, 40, you just never know.  Even if I lift the tag, it will still read whatever it was reading before lifting the tag. 

The most reliable way to see what it is set at is to dump the suspension down a little then let it relevel itself.  As soon as I drive it even .5 miles, it will read some ambiguous number.  I try to check it only on level ground.  

I know Monaco has a proportioning component to the suspension but I am just not clear on how this all works.  I presume the regulator is sending air to the tag through another component that proportions whatever pressure was set to eventually get to the tag.

The tag tires never look overloaded, flat on the bottom or differently loaded nor does my steer axle.  I would think that if the tag actually had 80-90 PSI sent to it that the tag would look more loaded, especially since I only run 85-90 PSI in them. 

Further when the tag is lifted, the tag bags ARE empty but the regulator will still show whatever it was before lifting the tag so I am sure that number is not in series with the tag bags themselves.  

I also presume that this is why the 60 PSI regulator/pressure gauge was replaced with a higher capacity unit.

There is more but I will stop here for now, hoping someone can clarify how the tag system is ultimately controlled. 

Thanks you.

Will B. 

I might be able to come over this weekend if you don't have this taken care of yet.

I may (not firm yet) be about 40 minutes from you sometime over the weekend.  Maybe Saturday afternoon, late, or possibly Sunday.

I checked the campground location, it looks nice there.  

I know the pre 09 electrical systems much better but if I am that close, might be able to help. 

Will

I don't recall a swing up door having a safety switch.  Seems to me that the safety switches are associated with bay doors under the slide outs.  

He needs to have it quiet in the coach and push a slide button with someone at the power pack listening for any clicking sounds.  If it is clicking, that would tell me the motor may be the issue.  If no clicks when activated, it is a control circuit issue.  The click is not going to be loud so they may need to be very close to it with the step cover removed.  Of course, a Volt meter is better but you have to know how and where to use it.  

Will

On 5/19/2023 at 7:02 AM, Mi Bill said:

Thank you to everyone that replied.

I found two mufflers that were almost direct replacements. Donaldson M120225 and Nelson 86147M. They both had the exact dimensions. I decided to go with Nelson because it was about half the cost of the Donaldson. I ordered it on 05/17/2023 through Truck Pipe USA, Ocala, FL, and had it shipped directly to Cummins in Clinton Twp., MI, where the coach is for repairs. According to the tracking information, it should be at Cummins today. Once installed, I’ll comment on the noise factor.

 

Thanks

Bill

Everyone you drive by thanks you for not straight piping it :-)

Will

On 3/25/2023 at 10:03 PM, MJ.STIGER said:

Well it was worth buying. Worked on the paperwork today. Have a small list of repairs for them to take care of before i get the keys to that old Coach. 

Got conformation that they have done :

- Chassis Inspection

- Oli Change

-Gen Oil / fuel filter 
 

List of todo's - Replace some Light bulbs interior, CO detector, 1 Dock light, Replace wrong silicone on roof w/Dicor, Passanger seat stopped working plug came apart. Worked on other visits. And a Detail Inside and Out. Told them it was unacceptable for delivery. 

Looking forward to receiving it soon. 

Wow, congratulations on what I think is a great coach!

My 05 Exec is different than yours but I would not sell mine for $80K

I am a little surprised at the comments about the 3000 hour generator being higher time.  I am more concerned with low time units than I would be a 3000 hour diesel Onan.  It might need a set of brushes installed about now and maybe a fan belt but beyond that, should be good to go a very long time.  You can put both the brushes and belt on yourself.  

I would rather have the ISM-11 (which I think this coach has) than the ISX.  

Well done, great find!

Will B.