Sec. 14. RETIREMENT FOR DISABILITY. Any member of this Pension System who becomes incapacitated for performance of his duty by reason of any bodily injury received in, or illness caused by the performance of his duty, shall be retired upon presentation to the Pension Board of proof of the disability, and shall receive a retirement allowance equal to the percentage of his disability; for example, if he is fifty per cent (50%) incapacitated, he shall receive fifty per cent (50%) of the amount he would receive if retired after completion of twenty-five (25) years service per month during the remainder of his life or so long as he remains incapacitated. Provided, however, that if, at that time, he is qualified as to age and service for retirement, he shall receive the full amount of pension per month, or in the event he is past fifty-five (55) years of age and has more service than the minimum of twenty-five (25) years, and becomes incapacitated he shall receive the full amount of pension per month plus One Dollar ($1) for each additional year as his service bonus. When any member has been retired for permanent, total or partial disability, he shall be subject at all times to re-examination by the Pension Board and shall submit himself to such further examination as the Pension Board may require. If any member shall refuse to submit himself to any such examination, the Pension Board may, within its discretion, order said payment stopped. If a member who has been retired under the provisions of this Section should thereafter recover, so that in the opinion of the Pension Board he is able to perform the usual and customary duties formerly handled by him for said city in the Police Department, and such member is reinstated or tendered reinstatement to the position he held at the time of his retirement, then the Pension Board shall order such pension payment stopped. No person shall be retired either for total or partial disability unless there shall be filed with the Pension Board an application for pension benefit, at which time the Pension Board shall have him examined by no fewer than three (3) physicians, to be chosen by the Pension Board and to make their report to the Pension Board. If a policeman is hurt while working on a regular shift or tour of duty, or if he is at home or some other place and an emergency arises wherein he has to perform the official duties of a policeman and is injured, he shall receive the benefits of this Act. In all cases where a policeman seeks benefits under this Section, it shall be the duty of the Pension Board to determine if the policeman did receive his injuries in the performance of his duty.