The mayor, at any time, upon charge being preferred, or, upon finding said chief or any members of said police force guilty of misconduct, shall have power to suspend such member from service until the board of commissioners shall convene and take action in the matter, and upon hearing the proofs in the case the board may discharge or restore such member, and the pay of such member may, in the discretion of the board, cease from the time of his suspension to the time of his restoration to service. Any violations of the regulations or orders of any superior shall be good cause for dismissal, and the mayor shall suspend the chief or any member of the police force if drunk while on duty.