Mainshaft and Gears

WARNING: This page is about a different car, the 2003 Nissan Altima and 2002 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

Check items below. If necessary, replace them with new ones.

Damage, peeling, dent, uneven wear, bending, and other nonstandard conditions of the shaft.
Excessive wear, damage, peeling, and other non-standard conditions of the gears.

Fig 1: Locating Mainshaft And Gears Inspection Areas
Courtesy of NISSAN MOTOR CO., U.S.A.