Inspection Before Disassembly

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

Disassemble power steering oil pump only if the following items are found.

Oil leakage from oil pump
Deformed or damaged pulley
Poor performance

Fig 1: Inspecting Power Steering Oil Pump
Courtesy of NISSAN MOTOR CO., U.S.A.