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在波音737-300机群内,经常出现发动机EGT、VIB指示摆动或者无指示及火警故障等等,其中大部分故障原因是CFM56-3C核心机内位于吊架位置上两对大插头存在缺陷而引起的,即:左发的D3324/D1210及D3302/D1208插头;和右发的D3326/D1210及D3304/D1208插头。发动机核心机部件上相关传感、反馈、控制信号都是经过这两对插头转接的。为了增加这两对插头的插钉、插孔之间的导电性能和防腐,在插钉、插孔的外表面镀了一层黄金保护层。但由于这两对插头位于高温、高振动的发动机的C函道内,经常受到高温气体的侵蚀及振动的影响,使插头的填充材料变质、插头损坏或插头松动,同时,该区域接近空间狭小,工作者在
In the Boeing 737-300 fleet, often appear EGT, VIB instructions swing or no indication and fire failure, etc., most of the cause of the failure is located in the cradle of the CFM56-3C core position caused by two pairs of large plug defects , Namely: the left of the D3324 / D1210 and D3302 / D1208 plug; and the right of the D3326 / D1210 and D3304 / D1208 plug. Engine core machine components related to sensing, feedback, control signals are transferred through the two pairs of plugs. In order to increase the plug pins of these two pairs of plugs, the conductive properties between the jacks and the corrosion resistance, a gold protective layer is plated on the outer surfaces of the inserting pins and the jacks. However, since these two pairs of plugs are located in the C-channel of a high-temperature, high-vibration engine, they often suffer from the erosion and vibration of hot gases, causing the filler material of the plug to deteriorate, the plug is damaged, or the plug is loose. At the same time, Workers at