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Hands down roof airs are the best for cooling . Yes a little noisy but while sleeping at a rest stop I found the noise a plus. The issue Clint as mentioned above are the CA units are low to the ground in an enclosed box , so cooling them is impossible unless you wish to use a Garden sprinkler .
While in Utah last summer it was so hot we started the coach and ran the OTR to cool down the coach prior to going to bed . The issue with adding roof airs will be the ceiling finish , however I bet for 20k or so it can be done to your standards of excellence . Now pull the trigger on that coach before it’s gone 🙂
Jeff and Lindsay
91 Marathon XL -
Are you able to use the bypass there, Dick?
Speaking of water volume, does anyone have a feel for how much water the headhunter toilets use per flush? It sounds like it uses a fire hose worth…
Jeff and Lindsay
91 Marathon XL -
Hi Art
I do not have the 2 relays, just the thermostatic valve in the cross over pipe,
It works great and in my case is a way of knowing that the Thermostatic switch is operating, i can of course confirm fan operation by putting 24 v into wires 291 and 292 and locking the clutch but that does not confirm that the switch is doing the same in operation, now when i see the light for low speed come on i can confirm switch operation.
good Luck
Gordon
Jeff and Lindsay
91 Marathon XL -
Question as I have never been able to catch an eclipse…… Is the 2024 eclipse going to be better or different than the 2023 which will take place in Albuquerque, NM right after the Balloon Fiesta in October? To me that sounds like a dream come true!
Jeff and Lindsay
91 Marathon XL -
If anyone wants to know the secret it was clearly stated. Never let the batteries get below 12.3.
How that is accomplished is far less important than doing that.
Good job.
Jeff and Lindsay
91 Marathon XL -
I’m on the same page as Dick, but……
I’m going to use a 12v example for simplicity. You unhook from shore power and your batteries are on float at 13.4. You drive all day with the alternator charging at 13.7 volts. You get to your campground and plug in and your inverters immediately go to bulk/absorption charge then in time to float.
So if you started out with 13.4 batteries, charged all day at 13.7, why in the hell would you want a full charge cycle at the end of the day thinking the batteries are not fully charged?
This should be interesting.
Jeff and Lindsay
91 Marathon XL -
That’s an old outdated Monitor Blake, unless there has been an update the EM70D is current. I had to replace the monitor on every bus I owned.
Jeff and Lindsay
91 Marathon XL -
I didn’t want slides, an H, an XLII, roof airs or IFS. 40′ or 45′ didn’t matter. Nothing wrong with any of those things. Just not what I wanted. There is a buyer for everything.
Jeff and Lindsay
91 Marathon XL -
Tough call, the entire suspension system, house air devices, engine bellows, gen air bags, etc., works off the aux, so you have a big time leak somewhere. As you have found, the aux gauge while running the bus is great way to alert you of a serious leak.
Jeff and Lindsay
91 Marathon XL -
Now I am even more confused. I took apart the other two pole breaker on the generator and it is a 20 amp breaker. I would replace the 50 amp breaker that trips, but powertech only sells a 70 amp or higher to fit and I can’t find one that matches the size in a 50 amp anywhere? Suggestions?
Jeff and Lindsay
91 Marathon XL -
So to simplify and restate the question, what would cause the fuel gauge to lose 24V and suddenly only get 12V. At the same time, the coach monitor that watches the coach 24V announces that it is only seeing 12V?
Jeff and Lindsay
91 Marathon XL -
Did someone sell Amazon just before today’s earning report? I am so sorry for you!
Jeff and Lindsay
91 Marathon XL -
Any buyer of an XLII needs to have Prevost verify skin delamnation is not a problem. Only Prevost can evaluate a coach for delamination. If in doubt say “Only Prevost can evaluate a coach for delamination” five times.
Having said that if the coach has had the repair that involves vertical strips that cover the gap between the panels delamination has been eliminated as an issue.
In the absence of knowing the permanent repair has been done visually, paper work from Prevost indicating the coach has been inspected and is not having delamination issues is an equally good indication you will not get stuck with 10’s of thousands in repair costs.
As to build quality and reliability you have to look at two separate items. The first is the chassis and the best way to be assured you are not likely to have serious issues is to have log books or records that show continued maintenance to or in excess of the Prevost requirements. Absent the existence of documentation you are relying on pure luck. This is despite the owner being a nice guy and telling you it was well maintained.
The house portion of the coach also needs some inspection. Around 2002 coach conversions did not reach the level of complexity seen today, but they likely had some type of proprietary converter installed control system that uses touch screens to perform most if not all the coach doings. Most of the systems in that vintage controlled all the audio video equipment, turned on lights, started the generator, controlled the A/C units, locked bays and doors, etc.
That part of the conversion requires the buyer to make sure every function is demonstrated to verify all the functions will operate as intended.
An XLII has a relatively good record with no real issues. But like every coach problems can occur and repairs have to be made so prior to letting money change hands just take the time to operate every single knob, dial, switch or lever. At least that way you will get some basic training and you will verify everything works.
Jeff and Lindsay
91 Marathon XL -
It is unlikely a buyer has a choice regarding bus over the road air as installed by Prevost. If you want OTR the vast majority of coaches with it will have been Liberty conversions. To get an OTR coach from another converter will be a hit and miss proposition.
There are significant benefits to OTR, but there are drawbacks. You have to determine the ultimate benefit to you. We have had nothing but Liberty Coaches with OTR. The lack of it was/is a deal breaker for us. We want to have the entire coach at the same comfortable temperature, and for me a comfortable temperature is likely too cold for most people. I set the system for 70 degrees. Regardless of whether it is winter or summer when we arrive at an RV park the entire coach and its contents are at a comfortable temperature.
The reason I stress the entire coach is at a comfortable temperature is because it makes it very easy for our house heating and A/C systems to not be overworked trying to cool down or heat up portions of the coach that were not at the desired temps while driving.
I am sure a coach without OTR can be kept comfortable using basement or Cruisairs, or roof airs but in some instances it might require running a generator to handle the power needs. It is all about numbers and outside ambient temps. There is no way a typical house A/C unit with 13,000 to 15,000 BTU output can make the entire coach comfortable for me, so I would have to run 3 or 4 to accomplish what I can do with the push of a single button on our OTR controls.
If we allow the coach to be overheated such as starting a trip after the coach has been sitting in the sun, the OTR with up to 106,000 BTU OTR output will bring it to a comfortable temp a lot quicker than 3 or 4 roof airs with 52,000 to 60,000 BTU output.
The downside is OTR uses the equivalent of 1/2 of a bay. The condenser uses a shallow bay on the passenger side and a similar amount for the evaporator on the driver side. If the coach is used as a second home and spends a lot of time at an RV park that space becomes more valuable than the ability to have OTR.
The bottom line is your definition of comfortable. I had an aunt and uncle who lived in FL and to them 85 degrees was comfortable. At that temp I am gasping for air and at 70 I am comfortable, and if it is cold out as long as the interior is somewhere around 60 or 65 I do not even turn on heat or the Webasto.
Jeff and Lindsay
91 Marathon XL -
Or being stuck working in ND and having your Webasto go out. Turns out the pumps were shot and leaking anti-freeze like Niagara Falls. Tried to get info from Jeff at ETLC on source for replacement but the local Freightliner dealer says he found them and could be here as early as tomorrow. Yeah!
Luckily, the temps are stabilizing and we should do just fine for the next few days with no heat in the bays.
Jeff and Lindsay
91 Marathon XL