WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Power Steering Oil Pump (VQ40DE Engine) With Torque Specifications
Courtesy of NISSAN NORTH AMERICA, INC.
Fig 2: Exploded View Of Power Steering Oil Pump (VK56DE Engine) With Torque Specifications