The flywheel is removed to replace the crankshaft rear oil seal, to replace it if the toothed rim that serves to start the engine with a starter is damaged, and to grind the surface for the clutch disc

You will need: tools needed to remove the gearbox and clutch, as well as a 17 socket socket, a screwdriver.

Remove the gearbox.

How to remove and install the ZMZ-406 engine flywheel

Note

The flywheel can only be installed on the crankshaft in one position, and the special hole in the flywheel must match the pin located on the crankshaft.

However, to facilitate the installation of the flywheel, we recommend that you mark the relative position of the parts.

How to remove and install the ZMZ-406 engine flywheel

Using the “12” key, we unscrew the six bolts of the clutch pressure plate, holding the flywheel from turning with a screwdriver inserted between its teeth.

How to remove and install the ZMZ-406 engine flywheel

Remove the driven and pressure discs.

How to remove and install the ZMZ-406 engine flywheel

With a “17” head, we unscrew the six bolts securing the flywheel, keeping it from turning with a screwdriver inserted between the teeth.

How to remove and install the ZMZ-406 engine flywheel

Remove the washer.

How to remove and install the ZMZ-406 engine flywheel

Remove the flywheel

Check the condition of the teeth of the flywheel rim, if they are damaged, replace the flywheel.

If there are marks or burrs on the contact surfaces of the clutch disc or crankshaft flange, replace or repair the flywheel

You can check and repair the flywheel in a workshop with special equipment.

Flywheel runout, measured at the toothed rim, must not exceed 0.5 mm.

To remove deep scratches and scuffs, the contact surface of the driven disk can be sanded, however, the layer of metal removed should not exceed 0.3 mm.

Install the flywheel in accordance with the marked marks and all removed components in the reverse order of removal.

Lubricate the threads of the flywheel mounting bolts with engine oil.

Tighten the bolts evenly and crosswise to 65 Nm (6.5 kgcm).

Warning. Be sure to replace the flywheel mounting bolts with new ones. Reuse of bolts is not allowed.