In general, when repairing and disassembling this part of components, always measure accurately first Quantitative hydraulic motor The controller adjusts the length of the anchor bolt or the distance between the piston rod and both sides. The installation shall be carried out according to this specification. This kind of practice is usually prohibited, especially when axial force screws cannot be placed accurately. Recently, we have a BW212D vibratory roller that moves forward after maintenance. After repeated adjustments, it is still untreated. When the control lever is in the middle position, the rolling wheel shakes back and forth, left and right. Some people think that it is Drill hydraulic motor Part of the common faults caused by vibration are actually the center position is not adjusted properly. This can be adjusted as follows:

(1) Check whether the fork is damaged. If it is seriously damaged, replace it

(2) The control lever is in the middle position, the rotary valve swing lever is in the middle position (the swing lever L1 is facing the middle position start power switch), and it is fixed 3

(3) Loosen the plug plugs of X3 and X4, connect X3 and X4 with high pressure oil pipes, connect a 60MPa pressure gauge at the high pressure measuring points A and B of the pump, cover the rolling wheel and tire with a wooden wedge, start the car engine, read the pressure of A and B. If there is a difference, adjust the controller to adjust the anchor bolt until the pressure is the same;

(4) Remove the connecting pipes of X3 and X4, tighten the screw plug, read the pressure of A and B. If there is a difference, adjust the axial force screw until the pressure is the same.