C4.2 and C6.4 Engines for Caterpillar Built Machines Caterpillar


Connecting Rod - Inspect

Usage:

320D A6F
注: 连杆上的螺栓通过特定的流程安装到连杆中。 不得旋转或卸下螺栓。 如果旋转或卸下了螺栓,连杆和螺栓将被损坏。

这些步骤用来确定连杆的以下特点。

  • 连杆长度

  • 连杆扭曲度

  • 连杆孔中心的平行度

注: 如果更换活塞销的连杆或轴承,还必须安装新的活塞。 需要新活塞以确保活塞在缸体之上的高度正确无误。

仅更换活塞或活塞销的轴承

此步骤当原来的连杆与以下部件配合使用时适用:活塞 和 活塞销轴承。

  1. 从连杆上卸下出厂时安装的活塞销的轴承。 在连杆中安装新的衬套。 如有必要,铰大轴承的孔径以获得活塞销与轴承之间正确的间隙。

    有关轴承和活塞销的尺寸,请参阅技术规格, "活塞和活塞环"。

  1. 如有必要,安装新活塞。 新活塞将为 "Std(标准)"高度等级。 此外,可能还需要新的活塞销。

    有关活塞和活塞环的技术规格,请参阅技术规格, "活塞和活塞环"。

  1. 测量活塞在缸体之上的高度,以便确保正确的活塞高度。

连杆的弯曲和扭曲




图 1g01367158

  1. 测量距离 (A) 。

  1. 测量距离 (B) 。

  1. 采用下列方程式:A / B <(0.05)(0.002)/(100)(3.9)。 如果超过限制,请更换连杆。

检查轴承和活塞销有无磨损

注: 连杆上的螺栓通过特定的流程安装到连杆中。 不得旋转或卸下螺栓。 如果旋转或卸下了螺栓,连杆和螺栓将被损坏。

  1. 检查活塞销的轴承和活塞销有无磨损。

  1. 测量活塞销在活塞销的轴承中的间隙。

有关尺寸信息,请参阅技术规格, "连杆"。

如果轴承或活塞销不在公差范围内,则必须更换部件。 如果轴承和活塞销之间的间隙不在公差范围内,则必须更换其中一个部件或两个部件。

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