Abstract: A modular pressure relief valve assembly for a hydraulically actuated clutch pack or limited slip device in a limited slip differential or torque coupling device. The modular assembly is removably disposed in the differential case and is connected to a passageway leading to a limited slip device within the differential case to establish fluid communication there between.

Abstract: A stored value system and method comprising a central server apparatus (10), one or more value added terminals (12), and one or more money-activated machines (14). The value added terminal (12) is designed to read smart cards (16) and to add cash value to the cards upon customer (18) input of an appropriate authorization code (22). The money-activated machine (14) is designed to read smart cards, and reprogram them by deducting a cash value amount corresponding to the customer's use of the machines. The central server apparatus (10) receives calls from customers requesting an authorization code for use with a value added terminal, and in response thereto, verifies funds in a pre-established customer account and provides an active authorization code.