Kohler — Motor and Pump Service

A Kohler service procedure — check it applies to your exact model before use.

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Procedure

1. Remove screws securing casing to motor. Remove the face plate.
2. Lift off diffuser and gasket.
3. Hold motor shaft by inserting screwdriver into slot provided in motor casing; or remove motor end cover and hold shaft with an open end wrench.
4. Rotate impeller counterclockwise and remove.
5. Slide rotating member of seal assembly off impeller shaft.
6. Remove diffuser O-ring and face plate gasket.
7. Remove screws and lockwashers securing face plate and bracket to motor housing. Remove face plate and bracket.
8. Remove stationary members of seal assembly by pushing out from behind face plate and bracket.
9. Check impeller, diffuser, diffuser O-ring, gasket, and all pump seals. If any item is damaged or worn, replace it.
10. Clean impeller and all seal assembly cavity surfaces thoroughly before reassembling.
11. Secure face plate to motor housing.
12. Install stationary members of seal assembly into the face plate.
13. Seat stationary members firmly, using finger pressure only.
14. Slide rotating member of seal assembly onto impeller shaft. Lubricate with clean water only.
15. Ensure grooved portions of rotating member are located over raised portions of impeller shaft.
16. Hand tighten impeller onto motor shaft.
17. Place diffuser over impeller with word TOP at top. Stop lug will be in 6 o'clock position. Ensure the O'ring is securely in place.
18. Lubricate with water. Then place gasket in groove on face plate and bracket. Ensure gasket is sealed properly.
19. Replace pump casing and secure in place.

Source: manual:OM-SA_100194_0884.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.