Water Pump - Test
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| 所需工具 | ||
| 零件号 | 零件名称 | 数量 |
| 6V-7775 | 气压表 | 1 |
| 8J-7844 | 转接接头 | 1 |
| 3K-0360 | O 形密封圈 | 1 |
| 5P-2725 | 探头密封转接接头 | 1 |
| 164-2192 | 压力探头 (1) | 1 |
| 5P-4487 | 适配器 | 1 |
| 5P-2720 | 探头转接接头 | 1 |
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| ( 1 ) | 如果使用端口 (1) ，则需要两把工具。 |
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| 图 1 | g00296313 |
水泵的压力测试口（典型示例） (1) 端口（备用加热器供应） (2) 端口（发动机诊断） (3) 端口（加热返回管路） | |
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接触正在运转的发动机会因热零件而导致灼伤或因旋转零件而导致伤害。 在旋转的发动机上工作时，避免接触热零件或旋转零件。 |
入口和出口间的压力升高量不同。 通过压力升高量可判断出水泵是否工作正常。 端口 (1) 和端口 (2) 代表水泵出口压力。 端口 (3) 代表水泵入口压力。
通过对比入口压力和出口压力测量压力升高量。 计算入口和出口间的压力差。 以下两种情况下，必须在压力升高量上加上最少 80 kPa (12 psi)：
- 发动机处于工作温度。
- 发动机在满负荷工况下运行。
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