Inspection After Disassembly: Synchronizer

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.

If the contact surface on coupling sleeve, synchronizer hub, and shifting insert has damage or abrasion, replace the components.
Coupling sleeve and synchronizer hub shall move smoothly.

Fig 1: Inspecting Synchronizer (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.
If the cam surface on baulk ring or contact surface on insert has damage or excessive wear, replace with a new one.
If spread spring damaged, replace with a new one.

Fig 2: Inspecting Synchronizer (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.