Camshaft
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| 图 1 | g00482459 |
(1) 新止推板的厚度 ... 15.00 ± 0.25 mm (0.591 ± 0.010 in)
(2) 凸轮轴轴颈
- 直径 ... 173.80 ± 0.03 mm (6.843 ± 0.001 in)
- 安装后的凸轮轴轴承孔孔径 ... 174.00 ± 0.06 mm (6.850 ± 0.002 in)
(3) 新隔板的厚度 ... 11.80 ± 0.05 mm (0.465 ± 0.002 in)
(4) 正时螺栓位置
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| 注意 |
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在组装时应遵守正确的凸轮段关系（正时）。 如果凸轮段不合拍，将发生严重的发动机损坏。 |
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| 图 2 | g00289768 |
凸轮轴轴承轴颈上的定位销位置 | |
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| 图 3 | g00482542 |
凸轮轴轴承轴颈上的定位销位置 | |
注: 与可变定位销相关的单个定位销的位置取决于凸轮轴轴颈的指定字符。 单个定位销位于定位槽的旁边。 可变定位销位于定位槽的另一端。
(5) 定位槽
(6) 定位销
- 从定位销顶面到凸轮轴轴颈之间的距离 ... 7.0 ± 0.5 mm (0.28 ± 0.02 in)
(7) 定位销
- 从定位销顶面到凸轮轴轴颈之间的距离 ... 7.0 ± 0.5 mm (0.28 ± 0.02 in)
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| 图 4 | g00482541 |
G3612 凸轮轴轴颈的指定字符 | |
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| 图 5 | g00482543 |
G3616 凸轮轴轴颈的指定字符 | |
(8) 凸轮轴轴承轴颈
安装凸轮轴轴承轴颈，使槽端朝向发动机前侧。
(9) 凸轮轴块
安装凸轮轴块，让带槽法兰朝向发动机的前部。
(10) 螺栓
- 扭矩 ... 270 ± 40 N·m (200 ± 30 lb ft)
(11) 必须将凸轮轴组装到装配夹具或缸体中。
- 在凸轮轴 (11) 的后端施加压力。 转动扭矩不得超过以下值。 ... 28 N·m (21 lb ft)
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| 图 6 | g00289772 |
(12) 凸轮轴凸轮规定升程
为了找到规定的凸轮轴凸轮升程，请使用以下步骤：
- 测量凸轮轴 (13) 的总高度。
- 测量基圆 (14) 。
- 从凸轮轴 (13) 的总高度中减去基圆 (14) 。 二者之差就是实际凸轮轴凸轮升程 (B) 。
- 凸轮轴的规定凸轮升程 (12) 值如下：
排气凸轮 ... 19.500 mm (0.7677 in)
进气凸轮 ... 19.500 mm (0.7677 in)
气体进入凸轮 ... 10.001 mm (0.3937 in)
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