(1) The Commonwealth shall pay to the Fund an amount equal to the total of the sums deducted under section 17 of the Ordinance from the pay of persons to whom this Part applies and the contributions made under section 3 of the Ordinance by persons to whom this Part applies.
(2) Where a person to whom this Part applies is retired on the ground of invalidity or physical or mental incapacity to perform his duties, or dies, within five years after the commencement of this section, the Commonwealth shall pay to the Fund the amount by which the proportion of any pension payable to him equivalent to the total of the sums deducted from his pay under section 17 of the Ordinance and the amount of the contributions made by him to the Fund is less than the amount of the pension.
(3) Where a pension becomes payable to or in respect of a person to whom this Part applies, any payment that the Commonwealth is required by Division 6 of Part III to pay to the Fund in respect of that person shall be increased by such an amount (if any) as the Board determines to be appropriate having regard to the contributions and payments made to the Fund for or in respect of units of pension referred to in subsection (1) of section 117.
(4) This section does not have effect on and after 1 July 1976.