3176C and 3196 Engines for Caterpillar Built Machines Caterpillar


Connecting Rod

Usage:

140H 126



图 1g01418662

(A) 活塞销轴承的轴承接头必须在任一侧的中心线以上成下述角度安置。 ... 12.5 ± 5.0 度

注: 连杆必须加热,以便进行活塞销轴承安装。 不要用喷枪。

(B) 可以将连杆加热至 175 至 260 °C (347 至 500 °F) 以便于安装活塞销轴承。 加热连杆的最大距离 ... 85.0 mm (3.35 in)

注: 在装配活塞和连杆前用清洁的发动机机油彻底润滑活塞销。

(C) 轴承安装后活塞销轴承的孔径 ... 50.830 ± 0.008 mm (2.0012 ± 0.0003 in)

连杆中活塞销轴承的孔径 ... 55.435 ± 0.013 mm (2.1825 ± 0.0005 in)

活塞销直径 ... 50.795 ± 0.005 mm (1.9998 ± 0.0002 in)

(D) 轴承中心点之间的距离 ... 247.00 mm (9.724 in)

(E) 用于曲轴连杆颈的连杆轴承孔径 ... 86.800 ± 0.013 mm (3.4173 ± 0.0005 in)

(1) 在连杆和连杆盖的这个位置,蚀刻下气缸编号。 用数字 1 至 6 标记连杆和盖。 在连杆与轴承挡圈凹口相同一侧上标上编号。

注: 将连杆安装到发动机上,零件号朝向发动机后部。

按照以下步骤拧紧连杆螺栓(2):

  1. 装配之前,用 4C-5592 防咬合剂 润滑螺栓的螺纹和盖的座入面。

  1. 将螺栓拧紧至扭矩为 130 ± 7 N·m (95 ± 5 lb ft)。

  1. 在各个连杆盖螺栓 上作一个指示标记。

  1. 将每个螺栓再转动 60 ± 5 度(1/6圈)。

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