Mecc Alte — Replacement of bearing (versions 34-38-40-43-46)
Repair & overhaul
From a Mecc Alte owner's manual — check it applies to your exact model before use.
Before you start
- If the front cover diameter is smaller than the fan external diameter, remove the cover to pull out the rotor
Procedure
- Remove rear seal
- Disconnect the five wires of the rotating diode bridge A and B
- For 34-38 remove clamp screws of the diode sectors; for 40-43-46 remove the clamp bolt and pull out the diode bridge
- Insert an adequate puller to pull out the exciter rotor
- Pull out the main rotor from the drive-end side
- Use suitable pliers to remove seeger rings
- Use a suitable puller to remove the bearing
- Heat the new bearing with a suitable magnetic device and fit it wearing anti-scorch gloves
Tools required
- puller Amazon
- seeger ring pliers Amazon
- magnetic heating device Amazon
- anti-scorch gloves Amazon
- lifting device Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Mecc Alte owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.