Any fireman temporarily serving in a position or rank other than that to which he has received permanent appointment shall be considered, while so serving, as though he were in his permanent position or rank, except that no increase in any pension, annuity or other benefit hereunder shall accrue to him by virtue of any service performed by him subsequent to attaining the compulsory retirement age provided by law or ordinance.
This Section does not apply to any person certified to the fire department by the civil service commission of the city, during the period of probationary service.
A fireman who holds a position at the will of the Fire Commissioner or other appointing authority, whether or not such position is an "exempt" position, shall be deemed to hold a temporary position.
For service in an exempt position above career service rank, benefit computations under this Article shall be based on the actual full salary attached to the exempt rank position held by the fireman if and only if:
If a fireman dies while eligible to make the contributions required under subsection (b) but before the contributions are paid, the fireman's widow may elect to make the contributions.
40 ILCS 5/6-211