Goulds Pumps 3600 - IOM - Manual (Page 70)

Maintenance
NOTICE:
Allow the shaft and impeller to cool to ambient temperature before assembling the next
impeller.
5. After all the impellers are removed, remove the center sleeve (205).
This step does not apply to 6x8-13 pumps.
Preassembly inspections
Replacement guidelines
Casing check and replacement
WARNING:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and assure gasket sealing
surfaces are not damaged and repair or replace as necessary.
Inspect the casing for cracks and excessive wear or pitting. Thoroughly clean gasket surfaces
and alignment fits in order to remove rust and debris.
Repair or replace the casing if you notice any of these conditions:
• Localized wear or grooving that is greater than 1/8 in. (3.2 mm) deep
• Pitting that is greater than 1/8 in. (3.2 mm) deep
• Irregularities in the casing-gasket seat surface
• Wear ring clearances that exceed the values in the Minimum running clearances table
NOTICE:
When clearances between the rings become excessive (increase by 50%), hydraulic
performance decreases substantially.
Casing areas to inspect
The arrows point to the areas to inspect for wear on the casing:
68 Model 3600, API 610 8th, 9th, 10th & 11th Editions (ISO 13709) Installation, Operation, and Maintenance Manual