3408C, 3412, 3412C, and 3412D High Performance Marine Engines Caterpillar


Alternator Belt - Inspect/Adjust/Replace

Usage:

3412 3JK

检查

为获得发动机的最高性能,应检查传动皮带是否磨损和断裂。 检查传动带张力。 调整皮带的张力,以便使皮带打滑最低化。 皮带打滑将降低皮带的使用寿命。

在两皮带轮的中部施加 110 N (25 lb) 的力,以检查皮带张力。 经过正确调整的皮带将下垂 13 到 19 mm (0.50 到 0.75 in)。

调整




图 1g00122875

(1) 典型调整螺母。 (2) 安装螺栓。

  1. 拆下传动皮带护罩。

  1. 松开安装螺栓 (2) 和调整螺母 (1) 。

  1. 通过转动调整螺母 (1) 来增加或减小皮带张力。

  1. 上紧调整螺母 (1) 。 上紧安装螺栓 (2) 。 有关正确的拧紧扭矩,请参阅操作和保养手册。

  1. 重新安装传动皮带护罩。

如果安装了新交流发电机皮带,应在发动机额定转速下运转 30 分钟后重新检查皮带调整结果。

更换

对于需要多根传动皮带的应用,要更换相配的整组传动皮带。 如果只更换一组中的一条交流发电机皮带,由于旧皮带已被拉伸,会使新皮带承受更多的负载。 额外负载就会加到新交流发电机皮带上,从而造成新皮带断裂。

有关下列专题的工序的更多资料,请参阅维修手册:

  • 交流发电机皮带的拆卸

  • 交流发电机皮带的安装

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