Replacement Guidelines; Shaft Inspection; Reassembly; Assemble The Standard Mechanical Seal (E-82-F) - Xylem Bell & Gossett e-82SC Instruction Manual

6.5.1 Replacement guidelines

Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts
Impeller vanes
Vane edges
Gaskets, O-rings, and seats replacement
• Replace all gaskets and O-rings at each overhaul and disassembly.
• Inspect the seats. They must be smooth and free of physical defects.
• Replace flapper valve if found damaged, worn or faulty. Flapper valve must be
replaced as a complete kit with pin. Flapper valve pin only available for replacement in
case of loss or damage.

6.5.2 Shaft inspection

Inspection criteria
Inspect the shaft according to this criteria:
• Thoroughly clean the shaft .
• Thoroughly clean the coverplate seal cavity.
• Inspect the surface for damage such as pitting, corrosion, nicks, and scratches.
Replace these parts if they are damaged.

6.6 Reassembly

6.6.1 Assemble the standard mechanical seal (e-82-F)

1. Lubricate the shaft sleeve and coverplate seal cavity with soapy water.
Do not use a petroleum lubricant.
2. Install a new insert gasket.
3. Install a new seal insert and make sure that the indentation is against the insert gasket.
4. Slide a new rotating seal assembly onto the shaft sleeve.
5. Push the top of the compression ring with a screwdriver until the seal is tight against
the seal insert.
6. Install the seal spring and point the narrow end toward the seal.
Series e-82 INSTRUCTION MANUAL
1. Slinger
2. Bracket coverplate
3. Seal assembly
4. Impeller key
5. Volute capscrew
When to replace
• When grooved deeper than 1/16 in. (1.6 mm), or
• When worn evenly more than 1/32 in. (0.8 mm)
When you see cracks, pitting, or corrosion damage
6 Maintenance
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