Leroy-Somer — Reassembly - LSE 160 M/L, LSE 180 MT/LR motors
Repair & overhaul
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- Take care not to knock the winding
- Shields must be fitted with a DE inner bearing retainer
Procedure
- Insert the inner bearing retainer (33) at the drive end of the rotor then fit new bearings on the shaft.
- Mount the circlip (38) for flange mounted motors.
- Insert the rotor (3) in the stator (1), taking care not to knock the winding.
- Position the preloading washer (59) with a small amount of grease in the back of the bearing cage of the NDE shield (6), then remount the NDE shield (6).
- Fit the bearing retainer (33) using a threaded rod in a tapped hole to maintain angular position, then remount the DE shield (5).
- Place the tie rods (14) and tighten the nuts diagonally to the recommended torque.
- Fix the bearing retainer with its screws (40).
- Mount the shield seals with grease (54 at non drive end, 39 at drive end for foot mounted).
- Mount the fan (7) using a drift.
- Check that the rotor turns freely by hand.
- Replace the cover (13) and fix it with the screws (27).
- Replace the key (21).
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Tie rod tightening torque see section 10.2.4
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.