Someone please educate me on how the electric door lock on a Prevost works.And for all u guy's that are getting ready to say"push the button on the dash" ,been there.done that!! What I am wondering is could this thing lock you out if accidentally tripped,and what about if you needed to get out of this thing in a hurry and it wouldn't trip.The one on my bus quit working and I am in the process of having it repaired.I am not so interested in keeping boogers out as I am in reducing wind noise around the door!! The old buses I used to drive had a safety cable for getting in the bus if the door got closed ,but there is no such thing on the Prevost.I sure wish one thing (just one )would pop up and it be as simple as a tripped breaker or a blown fuse!!
Red, you don't say the vintage, but since you are using it to minimize air noise I presume it is the one that engages in the center of the door latch side as on an XL.
If you are accidently locked out because the lock was engaged, just dump all the coach air. As long as you can get in the engine area you should be able to dump air such as by tightening and loosening the belt tensioner. I have no clue how you would engage that lock from outside the coach. If you are inside and the button won't work to disengage the lock do whatever you can to dump air such as dumping the air bags and trying to refill them until you have no more air.
?? was your coach a factory(marathon etc) conversion or seated coach? Next to co-pilot seat just off floor is there a box/enclosure that houses a air cyl to push a wedge into the door that pulls it tight against seal? Bob
Robert,it is a Country Coach conversion ,and yes we have found the air cylinder .it Is getting air but has lost it's electrical connection.And we can.t figure out where the thing is fed from.Country Coach was darned good at hiding relays.This is another one of those "now it works ,now it won't".
FWIW: for diagrams of original production configuration as delivered to country coach. Go to prevostcar.com Tech publications. Enter last letter in your serial number(denotes year prevost built shell) and last 4 numbers.. Example mine is W-6553 That will give you basic operation as to where relays etc are. There is a group directly above throttle pedal that is attached to frame of dash. It looses ground sometimes. You will need to play with prevost site a little until you get use to it but is a great tool. Bob
page 355 in P-1082 manual. solenoid on top of air door lock cyl. 24 volt. I put a separate push button release just below door handle on a past coach.
Bigred, A couple I met at a campground told me about their dog that they left in their coach, happy to see them return, wagging his tail, and guess which switch he hit :) So it could happen !
Bleeding the air like Jon said would work but the air for that switch is supplied from the front tank so if the check valves are working properly dumping air at the rear might not work. You will have to use the cond. drain in the steering box compartment. After hearing that story I put spare keys in my toad so I always have access to that compartment. The air solenoid for that should be located under the floor below the passenger seat or steps. I don't know what country coach did to the wiring but on the Prevost factory seated coaches terminal # 53 in the front panel feed that solenoid.
The accessory air tank on a Prevost is up front over the steer axle, but it supplies air to all non-brake functions, including rear belt tensioners. Some early model Prevost coaches did use air from the wet tank for belt tensioners but I think Red's uses accessory air.
If he has a Country Coach his electrical issue might be related to the CC control boards in the first bay. CC interfaced with a lot of Prevost functions unlike most converters that kept house and chassis systems separated.
I really appreciate all the input,and yes Jon ,if I had a do over ,I think I would forgo a CC conversion.Doing away with most of the 24v and converting it to 12v thus doing away with most of Prevost's controls was an asinine move.May have worked good when new but as they age these touch switch's tend lose grounds etc.Even with decent info on the wiring from CC ,it is amazing how often you wind up lost .My mechanic ,who is a very experienced bus mechanic has managed to fix things that have went wrong,but he has spent a lot of time scratching his head.
Bigred ,it is not just CC why Prevost did some things is beyond me when 1 valve would do the job they would use 4,I have a friend with a 2010 Parliament it's a electrical and air nightmare,the back wall in the rear bedroom is completed covered with wires,controllers and relays.
Gary has been in the Prevost service center in Ft Worth for 2 days now with Norgren valve problems on his front door and kneeling system it never stops on his $$$$$$$$$ coach
Big Red, I hope the site administrators forgive me for suggesting you might want to register at http://prevostcommunity.com/index.asp (http://prevostcommunity.com/index.asp) because you will find a lot of our members might be able to provide CC specific advice.
Don't leave here either because this site has a lot of good information.
It is a French cultural thing, ingrained in their DNA. Making something simple would seem dumb, unsophisticated. Sometimes it is to the good, like in French food, and culture. But in things mechanical, like in Prevost buses, not so much...
I have enough French left in me after all these years over here to understand why they engineer them that way...
JC
There are also some FaceBook pages dealing with Prevost problems, some sharp guys on those pages a couple of the guys are Prevost factory techs
Quote from: lostagain on April 06, 2016, 08:03:05 AM
It is a French cultural thing, ingrained in their DNA. Making something simple would seem dumb, unsophisticated. Sometimes it is to the good, like in French food, and culture. But in things mechanical, like in Prevost buses, not so much...
I have enough French left in me after all these years over here to understand why they engineer them that way...
JC
LMAO good morning JC ;D I was at B&B Tue and a Joe was there in his Prevost and he was having transmission problems on his way back home to Canada he was chasing down wiring the code 52 was giving him fits
You should call your Prevost regional tech rep. They can walk you through the problem over the phone and solve the problem in no time. That should be your first call not a bus board.
Quote from: Boomer on April 06, 2016, 08:45:03 AM
You should call your Prevost regional tech rep. They can walk you through the problem over the phone and solve the problem in no time. That should be your first call not a bus board.
Good advice if it is chassis related but they don't do answers for the conversion part as they have no idea what the converter did even with the guide lines Prevost recommends converters get outside the box
I fully agree with Clifford on this one. With almost any other conversion where the converter had only an air or electric connection to the chassis, and left the chassis stuff alone I would agree with Boomer, but CC had a lot of crossover into the chassis side and now those features that might have been nice at one time are beginning to haunt owners.
Well, that goes without saying and I guess a lot of owners are not knowledgable enough to know that you don't call a tech rep for a refrigerator problem. Our tech reps got a lot of calls for that kind of stuff, lol. I will say that CC or Vantare would not be my first choice.
Boomer,I do the Coachnet RV Technical Assistance Hot Line for a couple of months a year or till I cannot take it any longer ??? you would not believe the questions people ask that has nothing to do with the power train.
I got a call from a new owner with a new diesel pusher he was at a Pilot and ask me what grade of gasoline does he use in the RV as he wanted what was best for the engine I had to gather myself to keep from telling him 89 octane will be fine but I didn't ;D
Boomer, I try my best to not appear as an idiot when I go looking for help,but with CC ,often the things that you would think be bus related has been interfaced with CC'S better idea .You guys probably remember the problem that I had with the Webasto on this coach.In the Prevost literature every thing was pretty cut and dried ,but true to form, CC added their touch.In the engine compartment was a 6x6 jb that was full of wires that were coiled and placed in there.On the side of this box is a toggle switch.No mention of this box anywhere in any of the literature that I have and the only marking's on the box was a piece of Dymo embossing tape saying "flood light".Well after we finally did find out why the Webasto was not getting 12 volts ,here is what we found.They ran a wire all the way to the back of the bus then back to the "heater on"indicator"then back to the battery bay where the Webasto breakers ETC are located.The reason we were not getting 12 volts to the heater was that in the back of the afore mentioned box were two little relay's behind all the wires.One of these fed the Webasto and was bad. The other one fed the flood lights in the rear bumper.There was not a square inch of the front of the bus we didn't check looking for that relay.The switch on the box?? It is a way to turn the flood lights in the rear bumper of and on!!!
LOL you have your work cut out BigRed the AC circuit on a CC Prevost is not much better.I have a friend with a CC converted Eagle it's a night mare also.I will say CC has some nice wood work maybe a overkill but is it nice
Quote from: luvrbus on April 06, 2016, 08:15:24 PM
Boomer,I do the Coachnet RV Technical Assistance Hot Line for a couple of months a year or till I cannot take it any longer ??? you would not believe the questions people ask that has nothing to do with the power train.
I got a call from a new owner with a new diesel pusher he was at a Pilot and ask me what grade of gasoline does he use in the RV as he wanted what was best for the engine I had to gather myself to keep from telling him 89 octane will be fine but I didn't ;D
Ah, you could have compromised and told him to use Kerosene from the short hose pump!
That's good to know you're a tech rep for Coach Net Clifford, next time I need to put oil in I'll call you to find out what kind, lol.
LOL don't you know if was a 2 stroke DD they would hear the words Mobil Delvac 1240
Hello, on my 98 Prevost H3 (tour bus conversion) I was locked out. The emergency door valve did not let the door open. My coach was running and the only door key I had was on the ring with the ignition key. The guy that sold me the bus drove up and gave me another key. Now I always carry 2 keys, one in my pocket and another in the ignition. I also leave the little window open so I can reach in and shut off the bus and get to the keys. When I am parked I disable the door air latches by shutting off a circuit breaker and the emergency air valve. If I leave the breaker on with the front door open the energized solenoids drain the battery down in 24 hours.
As far as complicated design I am worried about the ac/heat controls there are several circuit boards with many wires. Fortunately, I was able to fix the ac on the bus by stopping refrigerant leaks and adjusting valves.
My most complicated fix was on the front heater fan. I turned on the fan switch and it did not go. I opened the dash covers and saw the fan motor wires and several additional wires going in to a control box. I got my multimeter started to open the control box. I stopped the disassembly and grabbed a large screw driver and hit the control box with the handle of the screw driver. The fan started and it has worked great for the last year.
Thanks, Bandsaw
Well Folks we fixed the air door lock and as we suspected it was one of those red square plugs losing connection.If you ever have something to just stop working all of a sudden ,start looking for these red plugs and and wiggling wires.Don't know what happens to these things but they sure will stop making contact.replace these things with but splices and heat shrinks and that is the end of the problem.Thanks so much for all your input .It sure made for some interesting conversations!!
We have fought that battle also Bandsaw.Our control box called "fan blower control unit "burnt to a cinder!! Don't know if yours uses the same control unit as my '93 xl does or not ,but if so it is a Prevost pn 871059 $533.13.Must be a part that goes out quite often since they have "ample"stock at all their locations!!
Don't be so hard on Prevost Red and just think about it you could have the self closing door fun,fun and more fun ??? I hate that frigging door
What the heck are red plugs... ::) ??? ::)
Luvrbus ,I'll bet that thing is a trip !! And I guess if you replaced it with any thing else ,it would look like FIDO'S BUTT!!