Tiempo Chevrolet Lacetti Cómo reemplazar la correa dentada con sus propias manos

El cinturón del mecanismo de distribución de gas es un atributo indispensable para la mayoría de los vehículos modernos, incluso para el automóvil Chevrolet Lacetti. A pesar de la simplicidad excepcional, este es un detalle bastante importante para el motor de combustión interna. Sustitución de la correa de distribución en Chevrolet Lacetti - el evento es bastante tiempo, pero es totalmente sencilla, si se actúa exactamente debajo de las instrucciones proporcionadas.

La correa de distribución, lo que lo hacen las tareas de la correa de distribución

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La tarea es que el árbol de levas gira a una velocidad, exactamente la mitad de la facturación idéntica cigüeñal. A la mitad de hace un siglo, la transmisión por cadena GRM se utiliza en la industria del automóvil, y todos los intentos de adaptar el cinturón para esto se malentendido. Pasó mucho tiempo antes de la transmisión por correa comenzó a dominar. Sin embargo, tiene varias ventajas significativas - la simplificación del diseño, bajo nivel de ruido y una disminución en la masa de la unidad de potencia.

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Hoy en día, los fabricantes prefieren instalar unidades de cinturón en sus autos. Pero es imposible decir inequívocamente que la cadena es peor que el cinturón. La transmisión de la cadena también tiene su ventaja: durabilidad, correlacionada con la duración del motor en sí. Por lo tanto, incluso en nuestro tiempo, algunas compañías manufactureras detienen su elección en el mecanismo de la cadena. Además, tales motores generalmente están equipados con tensores automáticos. La vida útil del cinturón ordinario rara vez supera los 60 mil kilómetros, y la simplicidad del diseño implica la necesidad de un servicio permanente: pull-up, reemplazo, control sobre el estado de la correa.

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La correa de distribución, ya que funciona y de qué material

Para que la correa de distribución funcione de manera confiable, se deben observar las siguientes condiciones: el estado óptimo de las poleas y los rodillos a lo largo de los cuales se mueve la correa, la tensión correcta de la correa, su protección absoluta contra el aceite y la suciedad. El diseño de la correa es bastante simple y algo se asemeja a un neumático de coche.

Por lo tanto, la mayoría de las empresas que se especializan en la producción de neumáticos también producen cinturones. La base de la correa de distribución: cable: el plexo de hilos duraderos de fibra de vidrio. Los cables interior son los dientes de los materiales resistentes al desgaste (como regla, nylon), y fuera, protege la capa de caucho, cuyo espesor es de aproximadamente cinco milímetros. El diseño de los cinturones es bastante diverso. Puede diferir en el ancho de la correa, el número y el paso de los dientes, así como su perfil (hay alrededor de veinte tipos de perfiles de dientes).

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¿Con qué frecuencia cambia la correa dentada?

El reemplazo de la correa dentada en Chevrolet Lacetti, de acuerdo con las regulaciones de mantenimiento, es necesario realizar cada 60,000 kilómetros de kilómetros. Sin embargo, la mayoría de los especialistas recomiendan reducir el cambio en el período de reemplazo debido a condiciones de funcionamiento complejas. En cuanto a la verificación del estado del cinturón, entonces, en el automóvil, Chevrolet Lacetta, se debe realizar cada 30 mil kilómetros.

¿Cuánto cambiará la correa dentada, qué señales hablan sobre la necesidad de reemplazar la correa dentada?

  1. Vistiendo material. La correa dentada es capaz de desgastarse de la misma manera que, por ejemplo, neumático. Si se usa el material de la correa, puede ocurrir para abrirlo o deslizarse. Especialmente a menudo esto sucede en grandes cargas en el motor del motor. Por ejemplo, al rastrear un remolque o remolque, así como en el clima húmedo.
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  2. Cinturón de abrasión. Esto sucede, como regla general, con la desviación de la polea y el rodillo del tensor de la posición trasera, así como cuando el mal funcionamiento del cojinete y la temperatura elevada. En caso de inspección, puede notar el desgaste de los dientes del cinturón, su base de tejido (fibras de tela dilatada y textura desigual).
  3. Desprendimiento o grietas. Esta característica de la boca es obvia. Es necesario explorar la superficie trasera y delantera del cinturón. La presencia de grietas, especialmente si hay muchos de ellos, indica un fuerte desgastado.
  4. Endurecimiento La superficie opuesta de la correa dentada es la superficie opuesta de la correa es dura, no es elástica y brillo. En este caso, el cinturón se vuelve insensible, como resultado de lo que ya no proporciona el contacto deseado con la polea.
  5. Alargamiento. El desgaste del material es capaz de liderar un fuerte alargamiento del cinturón, como resultado de lo cual el rodillo de tensión se mueve más allá de los límites permisibles. Esto reduce la rigidez y la tensión total de la correa, y, en consecuencia, el rendimiento general del mecanismo.
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  6. Desviación de la posición designada. Esta característica indica que los elementos internos del rodillo tensor están bastante cerca de la rotura. Si el rodillo falla, conducirá a un mayor ruido, temperatura y vibraciones.

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Rompió el cinturón de tiempo, lo que lleva a tal ruptura

El accidente de la correa dentada puede conllevar una masa de consecuencias desagradables que sean diferentes, que varían de la necesidad de reemplazar la correa dentada y para restaurar el mecanismo de distribución de gas y la revisión del motor.

La situación más difícil es cuando la válvula se dobla como resultado de la interrupción del cinturón. Esto simplemente se explica. La brecha puede ocurrir en el período en el que las válvulas se redujeron a la inyección de combustible o la liberación de gases. Al mismo tiempo, el movimiento de los pistones en los cilindros todavía continúa y pueden golpearlos de toda la fuerza. En este caso, la "reunión" puede terminar bastante mal.

Estimar El grado de daño puede evaluarse solo después de desmantelar la cabeza del motor y estimar el estado del sistema de pistón y las válvulas. Cabe señalar que el defecto de la válvula no se puede ver de inmediato, para que los diagnósticos requieren equipos especiales.

Cinturón de tiempo, por qué la sustitución de la correa es mejor hacer en el kit.

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Para evitar problemas en el futuro, la sustitución de la correa dentada es deseable producir junto con bombas y rodillos. Sin embargo, esta no es una acción obligatoria, si hay fondos adicionales, es mejor no ser perezoso porque afectará la eficiencia de la nueva correa dentada.

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Además, para cumplir con el reemplazo, tendrá que desmontar completamente todos los componentes de este equipo, incluida la bomba con rodillos. Por lo tanto, la sustitución de los consumibles el costo de este procedimiento no aumentará mucho, y no tomará mucho tiempo, pero aumentará la vida útil del agregado reemplazado.

Herramientas, Accesorios, Consumibles

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  1. Se dirige a "10", "12", "14", "17", "32".
  2. Énfasis ajustable.
  3. Hexágono en "5".
  4. La clave para "41".
  5. Passatia.

Técnica de seguridad

Es imposible trabajar bajo el vehículo si se publica solo en el conector. Como seguro en Obligatorio, use la estación de condición de fábrica. Está prohibido colgar el auto en dos o más gatos. Para proteger sus manos de moretones y cortes con operaciones de "poder", debe trabajar en guantes.

Reemplazo de la correa dentada Chevrolet Lacetti, paso a paso.

  1. Abra el capó y desmonte un forro decorativo con un motor, para lo que necesita desatornillar cuatro tuercas.
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  2. Para mayor comodidad, desmantele la carcasa del filtro de aire. Para hacer esto, con la cubierta del filtro de aire, desenroscamos los cuatro tornillos, así como la capa de boquilla de aire. Desmontamos la tapa y el filtro de aire. Para eliminar la carcasa del filtro, desenrosque dos pernos más.
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  3. Ahora retire la correa de transmisión: tire del rodillo de la unidad usando la tecla a "17" y desmonte el cinturón de las poleas. A continuación, debe desatornillar dos pernos y retirar la cubierta superior de la cubierta de tiempo.
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  4. Hacemos la eliminación de la rueda delantera derecha y la antera lateral del motor, que está unida a tres pistones y dos tornillos.
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  5. Destacamos la polea del cigüeñal, para la cual fija el volante con un destornillador ranurado grande a través de la ventana de visualización. Luego, con un soldador y una cabeza en "17", desenroscamos y desmontamos la polea del cigüeñal.
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  6. También debe retirar la cubierta inferior de la correa de distribución, que está unida por tres COGS.
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  7. El siguiente paso es eliminar el soporte del motor, para lo que necesita para instalar un conector adicional para una unidad de potencia debajo del palet. Luego, desenroscamos 3 tuercas y 1 perno usando la tecla a "14" y desmontar el soporte OBS.
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  8. Desenroscimos los cuatro pernos alrededor del perímetro del soporte de soporte y eliminamos el soporte.
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  9. Además, en todas las poleas, establecemos las etiquetas de tiempo. En la polea del cigüeñal, estará abajo.
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  10. Para la conveniencia de la rotación del cigüeñal, apriete el perno de la polea hacia atrás.
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  11. Ahora proceda a reemplazar la correa dentada. Usando la clave para "14", desatornillamos el rodillo parásito, que se encuentra a la derecha y desmonta el cinturón, después de lo cual nos desatornillamos el tensor de rodillos, que está unido por tres tornillos.
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  12. Antes de montar el cinturón, marque las etiquetas, ya que después de eliminarlos podrían ser eliminados.
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  13. Cuando se mantiene solo para usar un cinturón en la bomba, mueva el tensor de rodillos, después de lo cual está hasta el final de la correa y verifique la instalación de las etiquetas.
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  14. A continuación, desplace el cigüeñal en el sentido de las agujas del reloj en una o dos giras y revise las etiquetas nuevamente.
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Consejos PROFI, cómo revisar la tensión de la correa de distribución.

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Para verificar la tensión de la correa de distribución, gire el cigüeñal dos a tres veces en el sentido de las agujas del reloj y mire los dientes de rodillos del tensor. Es necesario que se encuentren uno frente al otro, además de unos pocos milímetros. Si las lecturas difieren, deberá ajustar la tensión de la correa con las bombas.

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