420E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Caterpillar


Belts - Inspect/Adjust/Replace

Usage:

432E BXE
如果安装新的皮带,到发动机运转 30 分钟之后,检查皮带的调整量。 对多条皮带驱动的应用,总是成组更换皮带。 如果只更换一组中的一条皮带,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皮带上,从而造成皮带断裂。

  1. 安装提升油缸支撑。 更多信息请参考 操作和维护手册, "提升油缸支撑 - 连接和断开" 。

  1. 卸下机器左侧上的发动机检修板。



    图 1g01178773

  1. 检查空调机皮带及其调整的状况。 空调机皮带在110 N (25 lb)的力的作用下应下垂 10 mm (0.38 in) 。

  1. 松开调整螺母 (1) 。 松开两个压缩机托架安装螺栓 (2) 。

  1. 移动压缩机,直至取得正确的皮带张紧度。

  1. 拧紧调整螺母 (1) 。 拧紧两个压缩机托架安装螺栓 (2) 。

  1. 再次测量皮带的挠度。 如果挠度值不正确,重复步骤 4 至步骤 6。

  1. 安装发动机检修板。

  1. 拆下机器右侧的发动机检修板。



    图 2g01178833

  1. 检查交流发电机皮带的状况并调整交流发电机皮带。 交流发电机皮带在110 N (25 lb)的力的作用下应下垂 10 mm (0.38 in) 。

  1. 松开安装螺栓 (3) 。 松开调整螺母 (4) 。

  1. 移动发电机直至达到正确的张紧度。

  1. 拧紧调整螺母 (4) 。 拧紧固定螺栓 (3) 。

  1. 再次测量皮带的挠度。 如果挠度值不正确,重复步骤 11 至步骤 13。

  1. 安装发动机检修板。

  1. 起动发动机。 将装载机臂升到最大高度。

  1. 卸下销并将装载提升臂的支撑装回到装载提升臂的存放位置。

  1. 将铲斗降至地面。

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