6.5.1 Replacement guidelines
Casing check and replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and ensure
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 align-
ment fits in order to remove rust and debris.
Casing areas to inspect
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts
When to replace
Vane edges
When you see cracks, pitting, or corrosion damage
Keyway and bores When you see damage
Gaskets, O-rings, and seats replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Replace all gaskets
and O-rings at each overhaul or disassembly.
Fasteners
WARNING:
Risk of serious personal injury or property damage. Fasteners such as bolts and nuts are criti-
cal to the safe and reliable operation of the product. Ensure appropriate use of fasteners during
installation or reassembly of the unit.
•
Use fasteners of the proper size and material only.
•
Replace all corroded fasteners.
•
Ensure that all fasteners are properly tightened and that there are no missing fasteners.
Wear rings or suction sideplate checks
Check the surfaces for pitting, and excessive wear or corrosion damage.
Stuffing box cover and seal chamber replacement
•
Thoroughly clean the gasket surfaces and fits to remove rust and debris.
•
Inspect surfaces for pitting, and excessive wear or corrosion damage.
6.5 Preassembly inspections
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Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual
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