Leroy-Somer — Dismantling PLS 250 and PLS 280 SC/MC/MD motors
Repair & overhaul · Motor assembly
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- The valve holds the seal (39) and its support (386) in place
Procedure
- Remove screws (27), grease nipple (64) and its extension (65), then take off the cover (13)
- Pull out fan (7), then remove the fan key
- Take out the key (21)
- Unscrew and remove the tie rods (14)
- Unscrew DE retainers (33) and (32) screws (40) and NDE retainers (52) and (53) screws (62)
- Unscrew the Hc screw of the mobile valve (35) and unscrew/remove the valve
- Using a bronze drift, remove shields (5 and 6); recover preloading washer (59)
- Remove circlip (60)
- Remove rotor (3) from stator (1) at the drive end
- Take out bearings (30) and (50) with a bearing remover
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.