Bell & Gossett P81567F Series 1531 - Manual (Page 24)

Replace these parts if they are damaged.
Reassembly
Seal assembly
Assemble the standard mechanical seal (1531 and 1531-F)
1. Lubricate the shaft sleeve and coverplate seal cavity with soapy water.
Do not use a petroleum lubricant.
2. Install a new cup gasket and a new seal insert with the indentation side down into the
cup.
3. Slide a new rotating seal assembly onto the shaft sleeve.
4. Push the top of the compression ring with a screwdriver until the seal is tight against
the seal insert.
5. Install the seal spring and point the narrow end toward the seal.
1
2
3
4
5
6
7
8
9
10
1. Impeller
2. Impeller capscrew
3. Drain plug
4. Volute
5. Volute capscrews
6. Motor bracket
7. Motor foot capscrews
8. Shaft sleeve
9. Seal assembly
10. Volute gasket
Assemble the single mechanical seal (1531-S)
1. Lubricate the shaft sleeve and seal cap with soapy water.
Do not use a petroleum lubricant.
2. Insert a stationary seal with an O-ring into the seal cap and slide it onto the shaft.
3. Replace the seal cap gasket.
4. Slide the rotating portion of the seal assembly onto the shaft sleeve and lock it in place.
ID seal size Distance between collar and impeller end of the shaft sleeve
1-1/4 in. (3.175 cm) 1-13/32 in. (3.571 cm)
Maintenance
22 Series 1531 Installation, Operation, and Maintenance Manual