Leroy-Somer — Dismantling - LSE 250 ME, LSE 280 SC/MC motors
Repair & overhaul
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- Avoid knocking the running surfaces of the shaft
- Take care not to touch the winding
Procedure
- Remove the screws (27) and take off the cover (13).
- Pull out the fan (7) using a hub remover or 2 levers, using the shield (6) for support.
- Take out the key (21) and remove the seals (39) and (54).
- Unscrew the DE shield fixing screws (270) and (273).
- Unscrew the fixing screws (40) on the inner bearing retainer (33).
- Using a bronze drift, remove the shields (5 and 6) tapping lightly on the shield bosses; recover the preloading washer (59).
- Remove the circlip (38).
- Remove the rotor (3) from the stator (1), taking care not to touch the winding.
- Take out the bearings (30) and (50) using a bearing remover, protecting the shaft extension with a washer.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Leroy-Somer service 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.