Camshaft
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图 1 | g01647617 |
注: 用按 50/50 比例混合的 8T-2998 润滑剂 和清洁发动机机油润滑凸轮轴凸轮。
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。
(1) 用清洁发动机机油润滑止推片。
(A) 齿轮和凸轮轴之间的干涉配合 ... 0.10 mm (0.004 in)
(B) 轴承轴颈的直径 ... 69.850 ± 0.013 mm (2.7500 ± 0.0005 in)
新凸轮轴的前后轴承孔 ... 69.969 ± 0.048 mm (2.7547 ± 0.0019 in)
新凸轮轴的 5 个内轴承孔 ... 69.982 ± 0.061 mm (2.7552 ± 0.0024 in)
(C) 新止推片的厚度 ... 4.83 ± 0.06 mm (0.190 ± 0.002 in)
凸轮轴的端隙 ... 0.10 至 0.25 mm (0.004 至 0.010 in)
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图 2 | g01647619 |
(D) 指定凸轮轴凸尖升程
- 排气凸轮 ... 8.783 mm (0.3458 in)
- 进气凸轮 ... 8.100 mm (0.3189 in)
按照以下步骤得出实际凸轮升程:
- 测量凸轮轴凸尖高度 (E) 。
- 测量基圆 (F) 。
- 从凸轮轴凸尖高度值 (C) 中减去基圆 (D) 。 二者之差就是实际凸轮轴凸尖升程 (B) 。
在第 3 步所发现的实际凸尖升程与新凸轮轴的规定凸尖升程之间的最大允许间隙 ... 0.13 mm (0.005 in)
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