C13, C15, and C18 Generator Set Engines Caterpillar


Camshaft

Usage:

C15 AR2



图 1g01460979

(1) 排气凸轮

(2) 喷油器凸轮

(3) 进气凸轮

注: 安装之前,先使用以 50/50 比例混合的清洁发动机机油和 8T-2998 润滑剂 润滑凸轮轴凸轮。

注: 安装凸轮轴之前,先用清洁的发动机机油润滑凸轮轴轴承。

(A) 凸轮轴轴颈直径 ... 84.850 ± 0.020 mm (3.3405 ± 0.0008 in)

(4) 三个平头螺钉的扭矩 ... 13 ± 3 N·m (115 ± 27 lb in)




图 2g01460981

(B) 凸轮轴凸轮规定升程

排气凸轮 ... 8.515 mm (0.3352 in)
进气凸轮 ... 9.702 mm (0.3820 in)
喷油器凸轮 ... 10.445 mm (0.4112 in)

按照以下步骤得出实际凸轮轴凸轮升程:

  1. 测量凸轮轴凸轮高度 (C) 。

  1. 测量基圆 (D) 。

  1. 从步骤 2 中得到的凸轮轴凸轮高度值中减去步骤 1 中得到的基圆测量值。 二者之差就是实际凸轮轴凸轮升程。

步骤 3 中的实际凸轮轴凸轮升程和新凸轮轴的规定凸轮轴凸轮升程之间允许的最大差异为 ± 0.10 mm (0.004 in)。

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