Flywheel Deflection

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Measure the deflection of the flywheel contact surface to the clutch with a dial gauge.
Measure the deflection at 210 mm (8.27 in) diameter.
1. Standard: 0.45 mm (0.0177 in) or less
2. Limit: 1.3 mm (0.051 in) or less
When measured value exceeds the limit, replace the flywheel with a new one.

Fig 1: Measuring Flywheel Deflection

Courtesy of NISSAN MOTOR CO., U.S.A.