Xylem P5002169B Series VSX VSH, VSC, AND VSCS - Manual (Page 36)

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If installing a cartridge seal cassette, use P-
80 Rubber Lubricant Emulsion, soapy water,
or equivalent to lubricate the static face o-
ring. Slide the cassette onto the shaft
ensuring the seal faces properly enter the
cavity. Lightly tighten the cassette to the
gland with capscrews. Finish torque to 170
inch-lbs. Push the sleeve fully home to axial
stop and tighten set screws to 130 inch-lbs.
Figure 47: Cartridge Seal and Gasket
3. Repeat steps 1 and 2 for the other side. When
finished, see the section entitled Assembly
Procedure to Install Bearing Frames – All
Pumps.
ASSEMBLY PROCEDURE TO INSTALL
BEARING FRAMES – ALL PUMPS
1. Install the lip seal into the bearing cap bore.
The lip seal should sit against the bottom of
the machined bore. The lip should face away
from the bearing cavity. Install the bearing cap
onto the shaft. (See Figure 46.)
Figure 48: Bearing Cap and Lip Seal
2. For 2”-frame pumps only, install a bearing
backup ring onto the shaft. (See Figure 49.)
(See Figure 22 for a listing of pump sizes with
2” frames.)
Figure 49: Installing the Bearing Backup Ring
(2” Frame Pumps Only)
3. Heat the bearing using an induction heater.
CAUTION Bearing Damage
Do not exceed a temperature of 275 ° F when
heating the bearing. Damage to the bearing
components may result if 275
° F is exceeded.
Failure to follow these instructions could result in
property damage and/or moderate personal injury.
CAUTION Extreme Temperature Hazard
Bearing surfaces are hot. Use appropriate
protection to prevent burns.
Failure to follow these instructions could result in
property damage and/or moderate personal injury.
4. Using gloves, slide the heated bearing onto
the shaft against the shaft shoulder. For 2”
frame pumps, slide the heated bearing onto
the shaft against the backup ring.
NOTE: The bearings are single shielded and the
shield should face inward toward the impeller.
5. Install a lockwasher and locknut onto the
shaft. Tighten using a spanner wrench or
hammer and punch. Make sure the locknut is
secured and then bend over the tabs on the
lockwasher. (See Figure 50.)