I own a Legacy CNJ F3 B-Unit (38760) that I am running with the A-A set of CNJ F3's. When I ran the unit for the first time on our club layout yesterday, the coil coupler on the B-unit would occasionally open up. This might occur every 10 minutes or so. Is this a factory design error in the circuitry, or might there be a weak knuckle spring causing the coupler to open up? Has anyone else ran into this issue with their Legacy B-units?
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I own a Legacy CNJ F3 B-Unit (38760) that I am running with the A-A set of CNJ F3's. When I ran the unit for the first time on our club layout yesterday, the coil coupler on the B-unit would occasionally open up. This might occur every 10 minutes or so. Is this a factory design error in the circuitry, or might there be a weak knuckle spring causing the coupler to open up? Has anyone else ran into this issue with their Legacy B-units?
had a similar issue. open the coupler by the remote and manually close the coupler as hard as you can. re-open the coupler by remote and repeat. do this several times.
The coupler spring need replaced?
I have had coil couplers open up when they go across the tip of the fat rail of a switch. Does your loco have a sliding shoe on it for the coupler?
There was a fix of installing a 1uF non polar capacitor across the leads to the coil...implying that they opened from brief electrical noise. Is that still the case?
Servoguy,
My B-unit does not have sliding shoes. I
Cjack,
I will check to see if my engine has 1.0 uF capacitor installed.
There was a fix of installing a 1uF non polar capacitor across the leads to the coil...implying that they opened from brief electrical noise. Is that still the case?
The caps were for TMCC. Do not use on Legacy as they are already in the circuit. I have that same set of engines. Replace the bad coupler and be done with it. They are cheap and easy to change.
Just unplug the wire connector for the coupler if you don't use the remote uncoupling feature.
Since you're running an ABA consist, you don't need the coupler to open on the B unit anyway.
Marty,
I will try purchasing a new coil coupler from my local repair technician and see if that solves the problem.
Thanks