Catalytic Converter Substrate - Inspect - If Equipped
将催化基体从催化转化器上拆下。 对催化基体进行目视检查。 查找催化基体表面上有无变色、杂质沉积物堆积和均匀覆盖层。
如果催化转化器工作正常，基体应为褐色或深褐色。 可能会有少量的灰色和白色的灰， 如果发生这些情况中的任何一种，但排气系统背压正常，转化器上的温差在
记录基体的物理外观、状况和颜色。 如果催化转化器看起来工作正常，将基体安装到催化转化器上。
如果观察到下列任一情况，请参考系统操作、故障排除、测试与调整, KENR9788, "催化转化器基体 - 检查"以了解正确的修正措施：
- 基体上有柔软的黑色烟灰状沉积物
- 基体上有积碳结垢
- 覆盖基体的大量粉末状灰色和白色烟灰
- 基体深褐色或黑色
- 白色粉末状外观
Caterpillar Information System:
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