Engine Crankcase Pressure (Blowby) - Test
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| 所需工具 | ||
| 零件号 | 零件名称 | 数量 |
| 348-5430 | 多用工具总成 | 1 |
活塞或活塞环损坏会造成曲轴箱内压力过高。 这种状况会导致发动机运转不平稳。 从曲轴箱通气装置冒出的烟雾（窜气）量也会高于正常水平。 然后，呼吸器很快便会堵塞。 这种情况可造成密封垫和密封的异常漏油。 曲轴箱窜气也可能因磨损的气门导管或损坏的涡轮增压器密封而导致的。
注: Caterpillar 电子技师（ET）可用来测量曲轴箱压力。
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| 图 1 | g02167834 |
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348-5430 多用工具总成 | |
348-5430 多用工具总成 用于检查窜气量。 有关检查窜气的测试步骤，请参阅 工具操作手册 , NEHS1087, " 348-5430 多用工具总成"。
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