There's no way around it: checking belt tension requires tools. Nissan has an official gauge designed to check belt tension (P/N BT-3373-F), but any tension gauge will work. You should check and set the belt tension when the vehicle is cold. The gauge measures the amount of deflection in the belt with a controlled force applied. For instance, the 2003 Pathfinder A/C belt should deflect 12mm with 98 Nm of force applied. Using a different type of tool, you may be able to measure the amount of force it requires to deflect the specified amount. Either way, the proper tension or deflection measurement can be compared to a table in the service manual. Bear in mind that there is no "general rule" for tension because different belt styles, thicknesses and lengths will all deflect a different amount.
展开▼
机译：无法解决：检查皮带张力需要工具。日产公司有专门用于检查皮带张力的压力计（部件号BT-3373-F），但是任何张力计都可以使用。车辆冷时，应检查并设置皮带张力。测力计在施加受控力的情况下测量皮带的变形量。例如，2003 Pathfinder A / C皮带在施加98 Nm的力时应偏转12mm。使用其他类型的工具，您可能能够测量其偏转指定量所需的力大小。无论哪种方式，都可以将适当的拉力或挠度测量值与维修手册中的表格进行比较。请记住，没有张力的“一般规则”，因为不同的皮带样式，厚度和长度都会使偏移量不同。
展开▼
