Automobile main decelerator assembly shim pre-selection method, pre-selecting machine measuring mechanism and control method thereof

Automobile gaskets preselected final drive assembly method, the measurement mechanism unit and a preselected control mode, which is equipped with a feature on the tapered roller bearings, tapered roller bearings and the spacer sleeve bearing block, measured on the two tapered roller from the A1 and A2 actual height of the spacer between the bearing inner ring, press the formula Gt = A1-A2 + F obtained the required shim thickness dimension of the pad. By the present invention the thickness of the spacer preselected accurate, improve the quality of the final drive assembly driving axle.