Goulds Pumps 3700 - IOM - Manual (Page 77)

Maintenance
3. Heat the new impeller wear rings to 180° to 200°F (82° to 93°C) using a uniform method for
heating, such as an oven, and place them on the impeller wear-ring seats.
101 Impeller
202 Impeller wear ring
203 Impeller wear ring
320 Set screw
4. Chill the new casing wear ring using dry ice or another suitable chilling substance and
install the ring into the casing fit.
Be prepared to tap the ring in place with a wood block or soft-faced hammer.
100 Casing
164 Casing wear ring
222E Set screw
5. Insert a new seal-chamber-cover wear ring:
a) Chill a new seal-chamber-cover wear ring, using dry ice or another suitable chilling
substance, and install the ring into the cover fit.
Be prepared to tap the ring in place with a hardwood block or soft faced hammer.
b) Locate, drill, and tap three new equally-spaced set screw holes between the original
holes in each new ring and ring-seat area.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 75
Manual