Variable cam timing phaser and method of assembling the same

A variable cam timing phaser configured to be coupled to a camshaft of a variable cam timing system, said variable cam timing phaser comprising:

• a housing having a housing wall disposed about a longitudinal axis and defining a housing interior, with said housing having a first housing side facing a first direction along said longitudinal axis and a second housing side facing a second direction opposite said first direction;
• a rotor at least partially disposed within said housing interior and rotatable about said longitudinal axis relative to said housing, with said rotor having a hub and a plurality of vanes extending from said hub away from said longitudinal axis toward said housing wall, and with said rotor and said housing cooperating to define a plurality of chambers therebetween, with each chamber of said plurality of chambers having an advance chamber and a retard chamber;
• and
• a retaining member disposed in abutment with at least one of said housing and said rotor to retain said rotor relative to the housing.