Exhaust System Contains Oil
可能原因
- 涡轮增压器密封件损坏
- 气门导管密封件磨损或损坏
- 气门导管磨损
- 活塞环磨损
- 过长怠速时间
建议的措施
注: 修理完成后，应当清理排气系统中的机油。 要想清理排气系统中的机油，执行以下步骤：
- 利用干净的布清除过量的机油。
- 以提升怠速（1500 RPM）运转发动机 10 分钟。
Show/hide table
| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. 涡轮增压器密封件损坏 A. 检查进气歧管和排气歧管中有无机油。 |
涡轮密封件 |
结果：进气或排气歧管中有机油。 更换涡轮增压器。 确认修理。 结果：进气或排气歧管中没有机油。 转至测试步骤 2。 |
2. 气门导管密封件磨损或损坏 A. 检查气门导管密封件有无磨损或损坏。 |
气门导管密封件 |
结果：气门导管密封件损坏。 更换气门导管密封件。 确认修理。 结果：气门导管密封件未损坏。 转至测试步骤 3。 |
3. 气门导管磨损 A. 检查气门导管有无磨损。 关于气门导管的最大允许磨损量，请参阅技术规格手册。 |
气门导管 |
结果：气门导管磨损。 必要时，修复缸盖。 确认修理。 结果：气门导管未磨损。 继续测试步骤 4。 |
4. 活塞环磨损 A. 活塞环过度磨损可导致曲轴箱内压力过高。 曲轴箱内的过高压力会导致曲轴箱呼吸器的窜气量超出正常值。 采用以下维修工具以及软件许可, NETG5044： 1. 285-0900 漏气工具总成 (小型发动机) 2. 348-5430 多用工具总成 B. 检查活塞环 |
活塞环 |
结果 活塞环磨损。 更换活塞环。 确认修理。 结果 活塞环未磨损。 继续测试步骤 5。 |
5. 过长怠速时间 A. 过长怠速时间会使机油进入排气系统中。 |
怠速时间 |
结果 怠速时间过长。 缩短怠速时间。 |
按所列步骤顺序完成以上步骤。
如果以上步骤未解决问题，请联系当地 Cat 代理商的技术通信员（TC）。 如需进一步的帮助，您的 TC 可以通过代理商解决方案网络（DSN）与您交谈。
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