OTR air

[truk4u]

Alternator wires running direct to the OTR doesn't make any sense!

[Jerry Winchester]

If the driver's air is not working (cooling) is could be the expansion valve. In that issue, coach air is cold, but driver air is not.

[tdelorme]

OK, guys. Sticks says nothing about the loose wires being part of the alternator system. The loose wires apparently run in the general area of the top of the alternator. Jon, remember in OKC when my OTR air was not working. Same deal, broken wire that had been rubbed by the alternator pully caused the failure.

[Loc]

Another good reason to avoid an OTR coach. At least it has slides.

[GDeen]

Sounds like he said the OTR didn't work at all and he had to use the cruiseairs instead....particularly in the H3, that would leave the driver pretty isolated without A/C....

Loc, you should be in hiding after Brown won Teddy's seat - the first step in the new populist agenda for the white house is to come after those of you who caused all this economic trouble in the first place....

[garyde]

Sounds like he said the OTR didn't work at all and he had to use the cruiseairs instead....particularly in the H3, that would leave the driver pretty isolated without A/C....

Loc, you should be in hiding after Brown won Teddy's seat - the first step in the new populist agenda for the white house is to come after those of you who caused all this economic trouble in the first place....

Lets keep it clean. No Politics please.

[GDeen]

Jeez Gary, just jerking Loc's chain.......wasn't aware of the new rules so thanks for keeping me straightened out.

[sticks]

Sorry for my uneducated second hand explanation of my OTR wiring malfunction, I'm an eye surgeon by training not an electrician. In fact, electric circuits always eluded me when I took physics. " tells the ak seemed like something " not for man to know". At any rate, the two small wires coming off the top and back of the alternator , apparently , are notorious for vibrating loose over time ( or breaking like mine). One of these wire goes to a relay that " activates" the OTR and the other small wire "tells the alternator to charge the chassis batteries" Hows that for a noobe novice electrically challenged explanation?

[Jon Wehrenberg]

We understand. Trust me.

Those wires relate solely to the alternator and its operation. I think. I have to look at a wiring diagram to see what's what because it does not seem reasonable for the OTR to be controlled from the alternator, however there may be something in the circuit that prevents the AC from running below a certain voltage, the current drop caused by a loose wire.

It still does not compute in my brain why you did not get a warning light for voltage on the dash. Or did you?

[sticks]

Jon, I had no red battery warning light show up on the dash when my OTR system shut down only during very low or idle speeds the last 2 or 3 hours of driving time. My primitive brain was wondering at this time whether voltage was crossing this compromised wire at higher speeds but not at idle speed. At any rate, once both wires definitely parted ways the red battery warning light came on and the OTR shut down permanently and I was " toast" for the remainder of the trip to Stuart, Fla.