If the master cylinder body is damaged, replace the master cylinder assembly.When attaching the master cylinder in a vise, clamping only the projection of the main cylinder.
Fig.6.32.The components of the brake master cylinder 1 - a cover;2 - the screw;3 - tank;4 - the plug;5 - a lock ring;6 - guide the piston rod;7 - cup;8 - stop;9 - the primary piston;10, 11 - lock pin and ferrule;12 - the secondary piston;13 - the master cylinder body