#41
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Hola a todos,me presento desde Spain con una GASGAS EC 300 GP 2018. Investigando por la web el problema que tengo(y muchos teneis por lo que he leido) encontre este foro con la esperanza de que alguien sepa cual puede ser el problema. Compre la moto hace 7 meses, venia con los rodamientos del cigue?al estropeados y se los puse nuevos(63/28 FAG y 6206 en C3 FAG en lugar de c4). Al abrir el motor me encontre cigue?al y rodamientos todo de un color marron-negro ,que pienso que es oxido. Pense en que el anterior propietario caeria en un rio o algo y le entro agua al motor. Y ahora, 2000km despues otra vez el mismo problema. Se los he vuelto a cambiar,esta vez 63/28 NSK y 6206 C3 SKF, ademas de cambiar la biela que ya presentaba cierto desgaste. 200km le e echo al motor desde entonces,y otra vez tienen holgura los rodamientos haciendo la prueba con el volante magnetico, como es posible??alguien sabe por que puede ser?perdonar si no se entiende algo al usar el traductor,espero que podamos entendernos bien.
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#42
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It is interesting about the cause - i am not really sure what the cause could be... Mine is all back together now and running great. Put the stock pilot jet back in and just hoping for the best. All bearings replaced, if it fails in another 2000km, I won't be keeping the bike thats for sure. |
#43
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#44
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https://youtu.be/f46vQ9XtSxY Ive had crank rebalanced. It was 0.05 left, 0.04 right side. 0.05 mm is max allowed by '06 manual. A tad bigger misalignment could inflict bearing damage over time, but not necessary.. Corrected to 0.02mm. Slowly coming together. Had a chat with yt channel cross enduro training, where he specialized in research of failing beta main bearings, but nothing exact was ever determined. Just possible bad bearing batch, bad seals, bad bearing installation from factory etc...but no explanation for rusty crank of non washed or flooded bike.
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EC 300 2008 EC 300 2018 GP tenere 700 |
#45
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#46
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#47
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2003 txt250 Pro 2013 Ossa 280i |
#48
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You people scare me!
I'm only half way to the kms/hours indicated here.. but have owned the bike since new (late 2018). Embarrassed I haven't been riding much at all. |
#49
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Si,cuando la compre le cambie los rodamientos. En 7 meses le e echo 2000km y han vuelvo a deteriorarse,no se han llegado a romper pero ya estaban haciendo ruido.
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#50
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Also, did you have your crankshaft measured for alignment. Mine was at the top of allowable free play, at 0.05mm. I've corrected it to 0.02mm. Were your cylinder trasfer ports discoloured, darker. (check attachment) They should be aluminum light colour. I'm assuming it could be from antifreeze leak. Next thing I noticed, was original piston rings having half the allowable minimum ring end gap, 0.25mm instead 0.5mm, So it might have added some extra binding heat to equasion. More heat, more expansion for possible leak. It also made vertical lines on cylinder wall. What torque did you use on the crankcase bolts 0.8 kg or 1kg? There could also be a crank leak of coolant, in small amounts, but enough to corrode the insides over time. While you think that topping up small amout of coolant after few rides is normal, but it is not, if there is no boil over.
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EC 300 2008 EC 300 2018 GP tenere 700 |
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