545、If the airplane experiences repeated failures of ta pump at one location, there may be debris in the case drain line, casedrain hose or case drain hose quick disconnect that cannot be flushed by accomplishing this procedure.
答案解析
解析：
相关知识点：
泵现重复故障，检查残渣处
相关题目
943、Make sure that the position of the clamp agrees with the position that you recorded during the removalprocedure. 确保夹具的位置与您在拆卸过程中记录的位置一致。
942、Make sure that the latch is fully engaged.
941、Make sure that the landing-light cutoff switch power connection is safe
940、Make sure that all the lights on the front of the CMU do not come on. 确保 CMU 前面的所有灯都不亮。
939、Make sure that all the galley compartments are empty
938、Make a careful estimate of the damaged area
937．Maintenance Practices which are a combination of servicing, removal installation, adjustment/ testinspection / check, cleaning /painting, and approved repairs should follow the Troubleshooting Section. 维护实践包括维修、拆卸安装、调整/测试检查/检查、清洁/喷漆和经批准的维修，应遵循故障排除部分。
936、Maintenance information shall include General procedural instructions and application of protectivetreatments after inspection. 维修信息应包括一般程序说明和检查后保护性处理的应用。
935、 Maintenance information needs to be continuously updated
934、 Lubricate the threads of the two bolts with a small quantity of oil 用少量油润滑两个螺栓的螺纹
