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douglas r. hutchins (Hutch1) (63.15.103.131)

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Posted on Thursday, June 14, 2001 - 5:59 pm:   

does anyone know how important those little white breakers are behing the drivers seat and do they play any role in the operation of the motor? my problem is so discouraging today know one knows anything about it, a buzzer is going off beneath that panel. we dont know what the buzzer is warning us of but it ran the battery down, and something is preventing the motor from starting even though it spins over fast. all i get now is a solonoid clicking in that rear upper triangular shaped electric box.
Geoff (208.176.188.18)

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Posted on Thursday, June 14, 2001 - 9:17 pm:   

Those white buttons are re-setable circuit breakers, but the problem sounds like it is in your safety shutdown system for the engine. Do you have an RTS manual? It could explain everything to you-- more than I could put in a post.
TonyW (64.12.101.162)

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Posted on Friday, June 15, 2001 - 12:19 am:   

Hey Doug, I think the buzzer is telling you you haven't got air built up. Ours buzzes about 30 seconds until it gets to 20lbs or so and then it goes off.
I am in the process of eliminating ALL the cockpit wiring including that breaker board and the cockpit switches. Half of that stuff is devoted to the door systems and idiot proofing the engine. If I was doing it over I would strip out all the original wiring to begin with. Ain't hind sight great?
Good luck,
TonyW
Bruce (208.60.233.70)

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Posted on Saturday, June 16, 2001 - 1:30 pm:   

If your engine crank ok there are only 2 reasons that I can think of assumming you have fuel in the tank and have not run out since the engine was last run. One is the engine stop solenoid valve. It is located on the engine compartment overhead above the governer,beside the fast idle solenoid valve. this is a normally open valve. when you shutdown the engine normally it is deenergized allowing air pressure to the shutdown actuator which moves the throttle lever to the "no fuel" position. this valve must be energized (closed) for the engine to run.
The other is the EMERGENCY shutdown valve. this is mounted directly on top of the intake blower and is held open by a pawl. The pawl is released by a solenoid allowing the valve to close shutting off intake air to the blower. this valve must be reset manually after an emergency shutdown.
If you are interested, contact me by e-mail with the model# and serial# of your bus. I may have wiring diagrams for it.
brucei@bellsouth.net
TonyW (64.12.104.167)

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Posted on Sunday, June 17, 2001 - 2:17 pm:   

Hey Hutch, When you park your bus and shutdown for the day, go to the battery compartment and throw the big battery switch opposite where it is set. This should disconnect the batts and keep the "low air" warning and other hazard warning controls from running them down.
The solenoid you hear inside the triangular electrical box is cutting off power to the a/c&heat to dedicate all the juice to start the coach.
Try this after you get your batts all charged up. Connect batts. In the cockpit, set the "engine run" switch (dial) to "run". Go to the rear of the coach and set the "engine control" to "rear run", then move the "start control" switch to "rear start". It should start. If it does, set "engine control" and "start control" to "normal" to transfer control forward.
We've made alot of unauthorized modifications and I can't test what I just wrote, but it seems thats how it used to start. You need to get "da book" for that thing to really understand what those fiends were up to when they designed the engine controls. They wanted to protect the engine from the operator so they put in alot of failsafe devices, a couple of which are to keep the operator from engaging the starter while the engine is running.
Its also got auto shutdown for high temp and low oil which I think is a good thing to have cause my pard is a leadfoot..lol
Anyway, once you get used to its quirks, its a smooth sailing machine. Ours drives like my moms mini-van.
Good luck,
TonyW

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