Transmission Oil Supply
由来自变速箱泵的机油供应并控制动力传动系的大量重要部件。 系统中的压力通过变速箱液压控制安全阀调节。 该阀具备调节系统压力和向变矩器供应正确油压的双重用途。
可执行测试，以确定变速箱泵是否供应系统中各部件的正确油量。
可测试以下压力，以确定机油供应是否充足。
- 变速箱油滤清器旁通
- 变速箱液压控制安全阀
- 变矩器锁止离合器
- 行星齿轮变速箱离合器
- 变矩器进口安全压力
如果在变速箱液压控制系统中的任何地方测得油压不足，则测试机油滤清器旁通阀的机油压力。 请参阅技术规格、系统操作、测试和调整, "液压油污染 - 测试"。 如果机油滤清器旁通阀的压力在规定范围内，则测试变速箱液压控制安全阀的压力。 请参阅技术规格、系统操作、测试和调整, "安全阀（变速箱液压控制装置）- 测试和调整"。
如果变速箱液压控制安全阀处的压力低于技术规格，则机油滤清器可能堵塞，机油滤清器旁通阀可能故障。 拆下机油滤清器旁通阀，并检查机油滤清器旁通阀是否磨损或损坏。
如果机油滤清器旁通阀的机油压力低于规定范围，则变速箱油泵损坏或破裂。 变速箱油泵不可维修，则必须更换。
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