Goulds Pumps 3700 - IOM - Manual (Page 72)

Maintenance
Impeller areas to inspect
101 Impeller
202 and 203 Impeller wear rings
Figure 11: Areas to inspect for wear on impeller
Oil ring replacement
Oil rings must be as round as possible in order to function properly. Replace oil rings if they are
worn, distorted, or damaged beyond reasonable repair.
Cartridge mechanical seal replacement
Cartridge-type mechanical seals should be serviced by the seal manufacturer. Refer to the
instructions from the mechanical seal manufacturer for assistance.
Coupling guard replacement
Repair or replace the coupling guard if you notice corrosion or other defects.
Gaskets, O-rings, and seats replacement
WARNING:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Replace any damaged or worn
gaskets/o-rings.
• Replace all gaskets and O-rings at each overhaul and disassembly.
• Inspect the seats. They must be smooth and free of physical defects.
In order to repair worn seats, skin cut them in a lathe while you maintain dimensional
relationships with other surfaces.
• Replace parts if the seats are defective.
Additional parts
Inspect and either repair or replace all other parts, if inspection indicates continued use would
be harmful to satisfactory and safe pump operation.
Inspection must include the following items:
• Bearing end covers (109A) and (119A)
• INPRO radial deflector (123) and thrust deflector (123A)
• Radial heat flinger (123B)*
• Thrust fan (123E)*
• Bearing locknut (136)
• Impeller key (178) and coupling key
• Impeller screw (198)
• Impeller washer (199)
70 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual