40 ILCS 5/22-404

Expenditures made and expenses incurred in connection with the administration of any pension fund shall not be construed to be a debt imposed upon the State or upon any county, city, town, municipal corporation or body politic and corporate of the State, to be paid out of taxes levied for corporate purposes. Such expenditures and expenses shall be held to be the obligation of such pension fund exclusively, as a body politic and corporate, unless otherwise specifically provided in the law creating such pension fund.