Camshaft
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| 图 1 | g00489223 |
(1) 凸轮轴上安装齿轮的最大允许温度 ... 315°C (600.0°F)
注: 不要使用喷枪加热齿轮。
(2) 齿轮和凸轮轴之间的过盈配合 ... 0.037 to 0.123 mm (.0015 至 .0048 in)
(3) 新凸轮轴轴承的表面（轴颈）直径 ... 69.850 ± 0.013 mm (2.7500 ± .0005 in)
在组装后，前轴承中的凸轮轴孔径 ... 69.969 ± 0.048 mm (2.7547 ± .0019 in)
在组装后，其他六个轴承中的凸轮轴孔径 ... 69.982 ± 0.061 mm (2.7552 ± .0024 in)
(4) 新止推板的厚度 ... 4.65 ± 0.03 mm (.183 ± .001 in)
凸轮轴轴向间隙 ... 0.090 to 0.270 mm (.0035 to .0106 in)
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| 图 2 | g00489224 |
(5) 凸轮轴凸轮高度
(6) 凸轮轴凸轮升程
- 排气凸轮 ... 10.210 mm (.4020 in)
- 进气凸轮 ... 10.212 mm (.4021 in)
按照以下步骤得出实际凸轮轴凸轮升程。
- 测量凸轮轴凸轮高度 (5) 。
- 测量基圆 (7) 。
- 从凸轮轴凸轮高度值中减去基圆。 二者之差即为实际凸轮升程 (6) 。
新凸轮的实际凸轮高度和规定凸轮高度的最大可允许差值 ... 0.13 mm (.005 in)
Caterpillar Information System:
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) Parameters
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789C Off-Highway Truck Air System and Brakes Service and Parking Brake (Front)
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IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Piston Pump (Hydrostatic) - Install
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