3406C Engines for Caterpillar Built Machines Caterpillar


Connecting Rod - Connecting Rod For One-Piece Aluminum Piston

Usage:

627F 1DL
请参阅特殊公告, SMHS7366,了解检查和修复连杆的相关信息。 也可参阅再用零件指南, SEBF8064, "无锯齿连杆的修复"。


图 1g00438303



图 2g00287852

拧紧连接杆螺栓的标记

(1) 安装活塞销轴承的连杆孔 ... 55.436 ± 0.013 mm (2.1825 ± .0005 in)

注: 连杆必须加热,以便进行活塞销轴承安装。 不要用喷枪。

(C) 连杆可以加热到 175 到 260 °C (347 到 500 °F) 以进行活塞销轴承安装。 加热连杆的最大距离 ... 85.0 mm (3.35 in)

(D) 用于安装活塞销的轴承孔 ... 50.830 ± 0.008 mm (2.0012 ± .0003 in)

(新) 活塞销直径 ... 50.795 ± 0.005 mm (1.9998 ± .0002 in)

组装前,用干净的发动机机油彻底润滑活塞销。

(4) 轴承接头在两端方位的角度必须是 ± 5 度。

(5) 轴承中心之间的距离 ... 261.62 ± 0.05 mm (10.300 ± 0.002 in)

(6) 在这个位置上,连杆和盖上刻下气缸编号。 用数字 1 至 6 标记连杆和盖。 在连杆与轴承凸舌槽相同一侧上标上编号。

(7) 拧紧连杆螺栓。 使用以下说明。

  1. 在安装连杆螺栓前,用 4C-5593 防咬合剂 润滑螺栓螺纹和盖的密封面。

  1. 将螺栓拧紧至以下扭矩。 90 ± 8 N·m (66 ± 6 lb ft)

  1. 在每个盖上和每个螺栓头上放置一个对齐标记。

  1. 将每个螺栓再拧紧 90 ± 5 度(1/4圈)。

(F) 用于安装曲轴连杆颈的轴承的连杆孔 ... 96.200 ± .013 mm (3.7874 ± 0.0005 in)

在轴承和新曲轴之间的间隙 ... 0.062 至 0.160 mm (0.0024 至 0.0063 in)

轴承与磨损曲轴之间的最大允许间隙 ... 0.20 mm (0.008 in)

注: 比原尺寸小 0.63 mm (0.025 in) 和 1.27 mm (0.050 in) 的轴承可选用。

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