4.松紧螺母，将手柄向右旋转压力上升，向左旋转则压力下降。单级齿轮油泵RGP-2A-F11、单级齿轮油泵单级齿轮油泵RGP-2A-F11、变量式轴向柱塞泵的斜盘倾角为零时称为中位，此时泵的输出流量应为零。但有时会出现中位偏离调整机构中点的现象，在中点时仍有流量输出。其原因是控制器的位置偏离、松动或损伤，需要重新调零、紧固或更换。泵的角度维持力不够、倾斜角耳轴磨损也会产生这种现象。叠加式节流阀 DL-02 50T:50T-07,50T-12,50T-14,50T-17,50T-20,50T-23,50T-26L,50T-30,50T-36,50T-39.50T-07-F-R,50T-12-F-R,50T-14-F-R,50T-17-F-R,50T-20-F-R,50T-23-F-R,50T-26-F-R,50T-30-F-R,50T-36-F-R,50T-39-F-R.50T-07-L-R,50T-12-L-R,50T-14-L-R,50T-17-L-R,50T-20-L-R,50T-23-L-R,50T-26-L-R,50T-30-L-R,50T-36-L-R,50T-39-L-R.?率单级齿轮油泵RGP-2A-F11、