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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #1  
Old 10-04-2011
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sanibel sanibel is offline
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Default Spotlight/Seachlight won't turn

I have a pretty fancy light on my coach. It is very similar to a Jabsco 255SL but with separately selectable spot & flood bulbs. West Marine price is over a thousand bucks! I wish it pointed forward.
Both bulbs work, tilt goes up/down fine. I used a piezo buzzer and found that I have juice to the turn motor in both directions, but it does not turn. Cannot tell if the motor is moving (arms aren't long enough to activate the dash switch while I am up on the roof.)
Did a search that suggested cleaning and adjusting the friction motor. Found a cutaway diagram that shows the 255SL model, but it is a little different than mine which has an elevated central nipple with 2 large nuts which the wires exit.
http://www.ittflowcontrol.com/files/...43000_0525.pdf

Anyone have experieince with one of these?
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John (and Robin) Churchill
Black Tongue Farm
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1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #2  
Old 10-04-2011
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Default No hum in motor

wedged something in the aim switch and climbed up - no hum in either direction.

Here is a picture of my innards and mounting on the rooftop dash AC condenser housing
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John (and Robin) Churchill
Black Tongue Farm
Sanibel, FL

1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #3  
Old 10-04-2011
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Ed Wimberley Ed Wimberley is offline
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Default

John
No experience here with that unit however check the blue and yellow wires for voltage when switch made. If you have voltage and no movement locked up or burned motor, no voltage you'll need to find bad wire.
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  #4  
Old 10-04-2011
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I have some voltage as the piezo buzzer buzzed. Volume goes up/down with speed control, so I think the wiring is good. Gotta get the wife to help for better testing with a multimeter, etc, but I think the motor is either slipping or not running
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John (and Robin) Churchill
Black Tongue Farm
Sanibel, FL

1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #5  
Old 10-04-2011
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Ed Wimberley Ed Wimberley is offline
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John
Could be you're correct stripped gears "plastic" most likely.
Good luck.
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  #6  
Old 10-05-2011
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Default Reply from Jabsco

Prompt reply this AM with the motor repair instructions. Good news is that the light does not need to come off the coach as I have already stripped one of the screws fooling with it.
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John (and Robin) Churchill
Black Tongue Farm
Sanibel, FL

1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #7  
Old 10-05-2011
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John
I'm guessing you determined it was the motor.
Looks fairly easy and straight foward, good luck.
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  #8  
Old 10-05-2011
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John,
I'm bringing a spot light with me to the RATS if you need a new one.
It's not the same model, but will work in it's place.
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  #9  
Old 10-05-2011
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Bad Motor. Does a little click, but no turn when in place. Seems to be seized as I cannot even turn the shaft with pliers. New one on order ~$50 plus S/H, should arrive 10-7-11
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John (and Robin) Churchill
Black Tongue Farm
Sanibel, FL

1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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  #10  
Old 10-09-2011
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Default FIXED It

It was a bad motor. The new ones do not look as good (plastic case) as the old style with a metal case and screws holding it together. Came with a rubber band wrapped around it. I thought it was a little funny, then I looked at how to solder the wires to it and realized it had to be disassembled to do that. Took the rubber band off and it kind of fell apart, fortunately no lost parts. Reassembled it and it seem to work.

Had an additional problem with the light. There is a mechanism to prevent rotation of greater than 360 degrees so the wires do not twist that depends on a fin built into the housing. It had broken off. It has a failsafe device to try to prevent that; I may have broken it monkeying with it prior to disassembly. At any rate, I drilled a hole down the end of the fin, goobed it generously with JB Weld and screwed it in place, Looks like it should work.
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Black Tongue Farm
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1979 FC33 Buddy Luce's bus (looking for a name)

LARGE MARGE - She left me for another man
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