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Originalmente publicado por EDUR
yo tb tengo los mismos problemas,, fondeo y cuando voy a tirar de motor, se te queda la cara de gp, y piensas, que pasa con las baterias ahora.??
Desmonte el panel de arranque, revise los contacos, puse spray de contactos, ( no 3 en 1), y parece que va mejor.. ahora con lo que habeis indicado del cableado, no se si meterle mano al asunto...
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Esos síntomas coinciden con el problema en ese modelo de Yanmar achacable a la deficiente instalación electrica original desde el arranque del cuadro electrico al solenoide del motor de arranque en el que existe una deficiencia importante en el cableado y se agudiza cuando el calor que produce el motor hace mella en la zona de conexiones en el motor de arraqnue. Hay foreros de habla inglesa que han sufrido ese misterio, propietarios que incluso han cambiado partes del motor de arranque como el solenoide cuando no era ese el problema.
SI no puedes entenderlo bien utiliza el google translator:
One of the
Yanmar 3GM30's on my boat had developed an
electrical starting problem wherein the
engine would not always (and eventually, would only rarely) start when the gear/throttle lever was in the neutral position. I had assumed that the contact switches on the controls were at fault, but even when they were bypassed the problem persisted. The factory starter button and ignition switch both worked and
current was getting to the solenoid.
I replaced the solenoid only to find that there was no improvement. Eventually a search on a
commercial diesel related site led to the solution: the wire on the standard
Yanmar harness was of insufficient gauge and, due to the length (and likely some deterioration of ) the factory non-tinned wire, there was a drop over the path to the solenoid that meant that insufficient
current was getting to the solenoid to engage the mechanical starter spline. Replacing the same with 8 gauge wire (the original was 12 guage) corrected the problem immediately.
Since the
wiring was attached to the cable on the lead to the
diesel, it seems that moving the lever would occasionally move or flex the wire into a postion that temporarilly corrected the problem. Now, even after re-connecting the neutral contact switches, it functions perfectly every time.
I am not sure whether anyone here has experienced a similar problem, although apparently it is not limited to the
3GM30.
Brad
