WARNING: This page is about a different car, the 2005 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing/Installing Hydraulic Line (QG18DE Engine) With Torque Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Removing/Installing Hydraulic Line (QR25DE Engine) With Torque Specifications