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Fórum Gurgel • Ver Tópico - MOSCA BRANCA... Virabrequim de Enertron
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Re: MOSCA BRANCA... Virabrequim de Enertron

MensagemEnviado: 02/Jun/2010 17:52
por Mário Leite de Oliveira
Boa tarde!

A algum tempo atrás estava precisando, mas já a algum tempo solucionei o problema.

Mário

Re: MOSCA BRANCA... Virabrequim de Enertron

MensagemEnviado: 29/Ago/2010 18:03
por LeonardoL
Senhores,

Para fazer juz à minha mensagem anterior, abri o motor faz algumas semanas e constatei que:

1) O motor já está na segunda retífica. Ou seja, 35mil km só no odômetro mesmo. Provavelmente o velocímetro foi trocado alguma vez, ou foi zerado.

2) Há algumas partes internas do bloco, especialmente perto do virabrequim e da bomba d'água com arranhões e lascados diversos. Pode ser que se tenha feito uso de ferramentas de alta precisão (martelo, marreta) para fins diversos, como instalar a engrenagem de comando no virabrequim.

3) O virabrequim original é forjado.

Ou seja, a quebra com certeza foi causada por alguém que meteu a mão no motor sem o devido cuidado.

Como a maioria dos colegas também relata que o problema ocorreu apenas após o motor ser aberto, o problema das quebras do virabrequim provavelmente está naquela outra "pecinha" mesmo (aquela que fica logo atrás da chave de boca). Prova disso é a quantidade de veículos rodando com o virabrequim original por décadas, e que após uma retífica/manutenção maior apresenta a quebra.

Bom, e por enquanto, é isso!

Virabrequim de Enertron

MensagemEnviado: 12/Nov/2010 08:31
por Alvaro Rungue