Movement Amount Of Flywheel (M/T Model)

Flywheel Deflection

• Measure deflection of flywheel contact surface to the clutch with a dial gauge.
• Measure runout at 210 mm (8.27 in) dia.

  Limit : 0.45 mm (0.0177 in) or less under no load 

• Measure axial displacement at 250 mm (9.84 in) dia.

  Limit : 1.3 mm (0.051 in) or less under 100N (22.48 lb) force 

  Fig 1: Measuring Flywheel Deflection

  Courtesy of NISSAN MOTOR CO., U.S.A.
• When measured value exceeds the limit, replace the flywheel with a new one.

Movement Amount in Rotation Direction

• Check the movement amount in the following procedure.

1. Install a bolt to clutch cover mounting hole, and place a torque wrench on the extended line of the flywheel center line.
   • Tighten bolt to keep it from loosening at a force of 9.8 N.m (1 kg-m, 87 in-lb).
2. Put a mating mark on circumferences of the two flywheel masses without applying any load (measurement standard points).
3. Apply a force of 9.8 N.m (1 kg-m, 87 in-lb) in each direction, and mark the movement amount on the mass on the transmission side.
4. Measure dimensions of movement amounts A and B on circumference of the flywheel on the transmission side.

   Standard : 35 mm (1.38 in) or less 

   Fig 2: Measuring Dimensions Of Flywheel Movement Amounts

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. When measured value is outside the standard, replace flywheel.