3064 and 3066 Engines for Caterpillar Built Machines Caterpillar


Fuel System Pressure - Test

Usage:

320B L 1ES
发动机满负荷运转时,燃油输送泵以 76 到 245 kPa (11.0 到 35.5 psi) 的压力输送燃油通过以下部件:

  • 燃油滤清器

  • 喷油泵壳体

采用以下步骤检查燃油输送泵的燃油压力。

  1. 将燃油管从喷油泵壳体进口处的滤清器上断开。

  1. 在进口上安装三通,并将燃油管连接到三通上。

  1. 将压力表连接到三通上并起动发动机。

如果燃油压力不超过 76 kPa (11.0 psi),则执行以下步骤。

  1. 关闭发动机。

  1. 更换燃油滤清器。

  1. 确保燃油输送泵上的进口滤网未堵塞或损坏。

  1. 确保燃油管未堵塞或损坏。

  1. 确保燃油软管未堵塞或损坏。

  1. 起动发动机后重新检查燃油压力。

如果燃油压力低于 76 kPa (11.0 psi),则表明燃油输送泵出现故障。

如果燃油输送泵出现故障,则执行以下任务之一:

  • 修理燃油输送泵。

  • 更换燃油输送泵。

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