Main shaft disassembly (page 2 of 2)

Using a hydraulic press, plate No. 1.820.024.000 and half rings No. 1.820.017.000 disassemble as follows;

1. Withdraw the rear bearing (1A) and 4th speed drive gear (1B) assembly. Withdraw the roller bearing (1C) and bushing (1D) from the 4th speed drive gear.
2. Withdraw the 3rd speed drive gear (2A) and the 3rd and 4th speed engagement sliding sleeve (2B) assembly together with the hub (2C) and 4th speed (2D) and 3rd speed (2E) synchronizer rings.
3. Withdraw the 3rd speed drive gear roller bearing.

CAUTION: Extreme caution should be used in order to avoid damaging the tooth ing or the shaft.

NOTE: When replacing the main shaft front bearing, remove the bearing inner race from the shaft as follows.

1. Using a suitable tool slightly move the bearing race from the gear which is machined onto the shaft.
2. Using universal puller No. 1.821.117.000, remove the bearing race.

During installation, using a hydraulic press, half plates No. 1.820.022.000 and a suitable inserting tool, re-install the inner race of the front bearing.