Xylem IM158 R04 Model SMVT - Manual (Page 14)

12 SMVT Installation, Operation and Maintenance Manual
3. Take care to make sure that the pump shaft is clean; it should be free of all burrs, oil, and
grease. The pump shaft should be completely dry before moving on to the next step.
4. To install the mechanical seal assembly, carefully slide it down the pump shaft until the
gland contacts the mounting surface on the top of the seal housing.
5. Install the (4) hex head bolts on the seal gland to the seal housing. See the “Engineering
Data” section on page 8 of this manual for the proper torque value.
6. Move on to the next section; “Installation of Motor to Pump Assembly”.
Installation of Motor to Pump Assembly
Your SMVT pump has been shipped with the pump assembly and motor disassembled.
1. With an adequately sized crane carefully lower the motor assembly onto the motor
adapter located on the top of the pump.
2. Secure the motor to the motor adapter with the (4) hex head bolts supplied with pump.
See the “Engineering Data” section on page 8 of this manual for the proper torque value.
3. Disassemble the coupling (supplied with pump) by removing the (6) socket head screws
and machine washers between the coupling halves (see Figure 3). Retain bolts and dowel
pin for reassembly.
Figure 3: Motor Coupling
Item Quantity Description
A 2 Coupling Half
B 6 Socket Head Cap Screw
C 6 Lock-washer
D 1 Dowel Pin
4. Take care to make sure that the pump and motor shafts are clean; they should be free
of all burrs, oil, and grease. Both the pump and motor shafts should be completely dry
before moving on to the next step.
5. Install the dowel pin on the pump shaft and loosely assemble the shaft coupling. Do not
tighten the coupling at this point; it should be left loose enough to receive the motor
shaft in the following section.
6. Insert the impeller shim (supplied with the pump) between the shaft coupling and seal
gland. This will lift the shaft/impellers to the running position.
7. Very lightly tighten the (2) socket head cap screws on the pump end of the coupling (refer
to Figure 4). Tighten the coupling evenly; ensure that the coupling is symmetrical on both
the pump and motor shafts. Do NOT torque the cap screws in this step.
Installation (continued)