Leroy-Somer — Dismantling PLS 315 motors
Repair & overhaul · Motor assembly
From a Leroy-Somer service manual — check it applies to your exact model before use.
Before you start
- The valves hold supports (386) and (388) for seals (39) and (54)
Procedure
- Remove screws (27), grease nipple (64) and extension (65), then take off the cover (13)
- Pull out fan (7) using a hub remover; for an aluminium fan heat the hub to approx. 100°C first
- Take out the key (21)
- Unscrew and remove the mounting screws (14)
- Unscrew DE retainers (32) and (33) screws (40) and NDE retainers (52) and (53) screws (62)
- Unscrew Hc screws of mobile valves (35 and 56) and unscrew/remove the valves
- Using a bronze drift, remove shields (5 and 6)
- Remove rotor (3) from stator (1) at the drive end
- Take out bearings (30) and (50) with a bearing remover
- Recover preloading washer or springs (59) from the bearing retainer (53)
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Aluminium fan hub heating approx. 100°C
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.