Assembling tool for balance piston of manual control brake valve

The utility model provides a manual control brake valve balance piston assembly tool which comprises a bearing bottom plate. The cross section of a main body of the bearing bottom plate is of a rectangular structure; the section of a main body of the assembly seat is of a circular structure, and the assembly seat is fixedly mounted at the top of the bearing bottom plate; the limiting base is fixedly arranged at the top of the assembling seat; the assembly piston is fixedly arranged at the top of the limiting base; the limiting top seat is fixedly arranged at the top of the assembly piston, and an auxiliary mechanism is fixedly arranged at the top of the limiting top seat; the connecting column is fixedly arranged at the top of the limiting top seat; the wrench column is fixedly arranged at the top of the connecting column; the fixing groove can fix the bottom of the assembly piston, the problems that in the prior art, when the assembly piston is assembled, an operator needs to hold the assembly piston to fix