Belts - Inspect/Adjust/Replace
V 形皮带(如有配备)
检查
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图 1 | g03648357 |
V 形皮带配置总成 |
为使发动机性能最大化,检查皮带是否磨损和断裂。 更换损坏或磨损的皮带。
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。 由于旧皮带已被拉伸,只更换一组中的一条皮带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。
如果皮带过松,振动会引起皮带和皮带轮不必要的磨损。 松弛的皮带可能打滑而引起过热。
如需精确检查皮带张力,使用 144-0235 皮带张力计 。
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图 2 | g01003936 |
典型示例 (1) 仪表 |
将量规 (1) 安装在最长自由长度的中心,检查张紧度。 旧皮带的正确张力为 355 N (79.8 lb)。 如果皮带张紧力低于 250 N (56 lb),将其调整到 355 N (79.8 lb)。
注: 新皮带的正确张紧力为 535 N (120 lb)。 需要较高的张力以补偿新皮带的拉伸。 仅在新皮带上使用较高的张力。 旧皮带是指操作了 30 分钟或更长时间的皮带。
如果安装了双皮带,检查并调整两条皮带的张力。
调整
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图 3 | g01430645 |
典型示例 |
- 松开交流发电机枢轴螺栓 (2) 和螺栓 (3) 。
- 移动交流发动机 (2) 以增加或降低皮带张紧度。 将交流发电机枢轴螺栓 (2) 和螺栓 (3) 拧紧至 22 N·m (195 lb in). (1) 。
更换
有关正确的步骤,请参阅拆解和组装, "V 形皮带 - 拆卸和安装"。
多 V 形皮带(如有配备)
检查
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图 4 | g01251375 |
典型示例 |
为获得发动机的最高性能,应检查皮带 (1) 有无磨损和裂纹。 如果皮带磨损或损坏,更换皮带。
- 如果皮带 (1) 每 25.4 mm (1 in) 的长度上有超过四条裂纹,则必须更换皮带。
- 检查皮带有无裂纹、裂口、磨光、油脂和裂缝。
更换
请参考拆解和组装手册, "交流发电机皮带 - 拆卸和安装"以了解正确步骤。
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