Goulds Pumps 3700 - IOM - Manual (Page 80)

Maintenance
1. Check for distortion at the set screw areas.
2. Check the shaft runout and all mating surfaces of the shaft and impeller hub for
perpendicularity.
3. True up all damaged surfaces.
4. Recheck the impeller wear-ring runout.
Seal-chamber cover inspection and replacement
Two seal-chamber cover versions
The seal-chamber cover is available in two versions:
• Standard
• Optional
The optional version has a cooling chamber and water jacket cover and is used when elevated
pumped-fluid temperatures are present.
Seal-chamber cover areas to inspect
• Ensure all gasket/O-ring sealing surfaces are clean and have no damage that would
prevent sealing.
• Ensure that all cooling (where applicable), flush, and drain passages are clear.
125 Seal-chamber throat bushing
184 Seal-chamber cover
230 Seal-chamber cover wear ring (not present on
3703/3700LF)
Seal-chamber cover replacement
Seal-chamber cover part When to replace
Seal-chamber cover surfaces When worn, damaged, or corroded more than 0.126
in. (3.2 mm) deep
Inside diameter of seal-chamber cover bushing When the diametral clearance between the bushing
and the impeller hub exceeds 0.047 in. (1.20 mm)
Replace the seal-chamber cover bushing
The seal-chamber cover bushing is held in place by a press fit and locked by three set screws.
1. Remove the bushing:
a) Remove the set screws.
78 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual