Removing Impeller from Water Ace Sprinkler Pump for Bracket Replacement

User needs to remove the diffuser/impeller on a 2 HP Water Ace sprinkler pump to replace a cracked iron bracket.

Impeller Removal Procedure

1. Open pump casing (assumed done).
2. Access motor shaft: open back of motor to find the 7/16" slot on the shaft end.
3. Hold shaft with wrench on the slot (may need to move starting capacitor—the round black cylinder ~3" long).
4. Unscrew impeller counterclockwise.
5. Under impeller is the shaft seal—handle carefully; it's fragile. One half presses on the shaft, the other sits in the case in a rubber mount.

Matt includes a link to the Water Ace owner's manual with parts breakdown. The key is locking the motor shaft while unthreading the impeller, which is reverse-threaded (counterclockwise to remove) on most centrifugal pumps.