Goulds Pumps 3700 - IOM - Manual (Page 63)

Maintenance
The impeller nut has left-hand threads.
122 Shaft
198A Set screw
304 Impeller nut
3. Pull the impeller from the shaft.
Use a spanning-type puller if required.
4. Remove the impeller key.
Save the key for reassembly unless it is damaged.
Remove the impeller (3703)
CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.
1. Loosen the set screw at the end of the impeller nut.
2. Loosen and remove the impeller nut.
The impeller nut has left-hand threads.
122 Shaft
198A Set screw
304 Impeller nut
443A Impeller spacer
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 61
Manual