Crankshaft - Steel Crankshaft
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| 图 1 | g01255050 |
典型实例 (1) 曲轴齿轮 (2) 曲轴 (3) 曲轴止推垫圈 | |
安装到曲轴上的齿轮的最大允许温度 ... 180 °C (356 °F)
新曲轴端隙 ... 0.16 至 0.38 mm (0.0063 至 0.0150 in)
止推垫圈的标准厚度 ... 2.26 至 2.31 mm (0.0890 至 0.0909 in)
止推垫圈的加大尺寸厚度 ... 2.45 至 2.50 mm (0.0965 至 0.0984 in)
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| 图 2 | g01335806 |
典型实例 | |
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| 曲轴轴颈的缩小尺寸直径 | |||
| 编号 | 0.25 mm (0.010 in) |
0.51 mm (0.020 in) |
0.76 mm (0.030 in) |
| 1 | 75.926 至 75.905 mm (2.9892 至 2.9884 in) |
75.672 至 75.651 mm (2.9792 至 2.9784 in) |
75.418 至 75.397 mm (2.9692 至 2.9684 in) |
| 2 | 63.236 至 63.216 mm (2.4896 至 2.4888 in) |
62.982 至 62.962 mm (2.4796 至 2.4788 in) |
62.728 至 62.708 mm (2.4696 至 2.4688 in) |
| 3 | 40.551 mm (1.5965 inch)（最大值） |
N/A | N/A |
| 4 | 39.47 mm (1.5539 inch)（最大值） |
N/A | N/A |
| 5 | 39.47 mm (1.5539 inch)（最大值） |
N/A | N/A |
| 6 | 44.68 mm (1.7591 inch)（最大值） |
N/A | N/A |
| 7 | 不要加工该直径。 | 不要加工该直径。 | 不要加工该直径。 |
表 1 中的部件 (6) 可以用曲轴耐磨套筒修理。 更多信息，请参阅拆解和组装, "曲轴耐磨套筒（后部）- 拆卸和安装"。
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| 曲轴臂加工区域的最小宽度 | |||
| 臂 | 1、2、3、6 和 7 | 4 和 5 | 8 |
18.31 mm (0.7209 in) |
19.11 mm (0.7524 in) |
26.61 mm (1.0476 in) |
|
如有必要，加工止推面以清除损坏。 有关信息，请参阅表 2。
请参阅表 3 以了解曲轴轴颈的跳动量。
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| 轴颈 | 轴颈的跳动量 |
| (1) | 安装 |
| (2) | 0.08 mm (0.0031 in) |
| (3) | 0.15 mm (0.0059 in) |
| (4) | 0.08 mm (0.0031 in) |
| (5) | 安装 |
必须加工所有曲轴轴颈的半径。 该加工必须使曲轴恢复为原装标准。 该半径必须能使轴颈和侧加工面间实现平稳过渡。
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| 图 3 | g01335807 |
典型实例 | |
加工曲轴后，必须将油孔 (4) 的边缘加工至原始标准。
机油孔
- 机油孔边缘的最大半径 ... 0.5 mm (0.0197 in)
所有轴颈表面抛光 ... Ra 0.2 微米
所有半径表面抛光 ... Ra 0.4 微米
机加工后，检查曲轴有无结构性裂纹。
更多有关连杆轴承颈以及连杆轴承的信息，请参阅规格, "连杆轴承颈"。
关于主轴承颈及主轴承的信息，请参阅规格, "主轴承颈"。
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