Flywheel: Testing and Inspection

FLYWHEEL DEFLECTION





^ Measure the deflection of flywheel contact surface to clutch with dial indicator.
^ Measure the deflection at 210 mm (8.27 inch) dia.
Standard: Less than 0.45 mm (0.0177 inch)
^ If measured value is out of the standard, replace flywheel.

MOVEMENT AMOUNT OF FLYWHEEL

CAUTION: Do not disassembly double mass flywheel.

Movement Amount of Thrust (Fore-and-Aft) Direction
^ Measure the movement amount of thrust (fore-and-aft) direction when 100 N (10.2 kg, 22 lbs.) force is added at the portion of 125 mm (4.92 inch) radius from the center of flywheel.
Standard: Less than 1.3 mm (0.051 inch)
^ If measured value is out of the standard, replace flywheel.

Movement Amount of Radial (Rotation) Direction
Check the movement amount of radial (rotation) direction as follows:
1. Install bolt to clutch cover mounting hole, and place a torque wrench on the extended line of the flywheel center line.
^ Tighten bolt at a force of 9.8 Nm (1 kg-m, 87 inch lbs.) to keep it from loosening.





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 Nm (1 kg-m, 87 inch lbs.) in each direction, and mark the movement amount on the mass on the transmission side.
4. Measure the dimensions of movement amounts A and B on circumference of flywheel on the transmission side.
Standard: Less than 24 mm (0.94 inch)
^ If measured value is out of the standard, replace flywheel.