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Leroy-Somer — Dismantling PLS 160 M/MG/L and PLS 180 M/L motors

Repair & overhaul · Motor assembly

From a Leroy-Somer service manual — check it applies to your exact model before use.

Before you start

  • Take care not to knock the running surfaces of the shaft

Procedure

  1. Remove screws (27) and take off the cover (13)
  2. Pull out the fan (7) using a hub remover or 2 opposed levers with shield (6) as support, then remove the fan pin
  3. Take out the key (21) and remove seals (39) and (54)
  4. Unscrew and remove the tie rods (14)
  5. Unscrew inner bearing retainer (33) screws (40) or NDE retainer (53) screws (62) as applicable
  6. Using a bronze drift, remove shields (5 and 6) by tapping the shield bosses; recover preloading washer (59)
  7. Remove circlip (38) if flange mounted, and circlip (60) if roller bearings
  8. Remove rotor (3) from stator (1) at the drive end, taking care not to touch the winding
  9. Take out bearings (30) and (50) with a bearing remover, protecting the shaft end 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.

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