我们在外出办训练班时,有的驾驶员反映有些FP_175A型分配器(天津机械厂生产)当把操纵手柄扳到“下降”位置时,农具下降很慢,而且分配器和发动机都有异常响声出现。这是因为长春拖拉机附件厂和天津机械厂以前生产的FP型分配器都有“上升”“中立”“下降”“浮动”四个位置,而且都有定位装置。但是一九六六年以后生产的FP_175A型分配器,仅“上升”“中立”“浮动”三个位置有定位装置,“下降”位置上没有定位装置,当需要强制下降农具时,把操纵手 When we were out of the training course, some drivers reported that some FP_175A type distributors (manufactured by Tianjin Machinery Factory) fell slowly when the control handle was pulled to the “down” position, and both the distributor and the engine had Abnormal noise appears. This is because the Changchun Tractor Annex Factory and the Tianjin Machinery Factory previously produced FP-type distributors have “up ” “neutral ” “down ” “floating ” four locations, and have positioning device. However, the FP_175A distributor manufactured after 1966 has a positioning device only in three positions of “rising”, “neutral” and “floating”, and does not have a positioning device in “down” position. When required Forced to drop farm tools, put the manipulator