46 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
46 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
Vertical Turbine Pumps
Repairs
Document Name: 2001299-VTP-IOM-EN Page 46 of 67
Revision 3 Copyright © 2014, Weir Floway, Inc. All Rights Reserved. Issue Date: December 12, 2014
8.2 Equipment and Tools
If bowl assembly repairs are anticipated, a separate manual is available giving detailed instructions for
disassembly and repair. Read this manual thoroughly before attempting repairs of the bowl assembly. When
requesting this manual from the factory the pump model must be given.
8.3 Packing Box Repairs
Packing box repairs can be done without removing the complete unit. Packing replacement as outlined in
“Replacing the Packing” on page 40 can be accomplished without disturbing the pump or driver. The packing
box bearing can be replaced if necessary by removing the driver and sliding the packing box off the shaft.
8.4 Mechanical Seal Repairs
• Mechanical seal repairs can be done without removing the complete unit.
• The mechanical seal assembly can be replaced by removing the spacer and pump half coupling on solid
shaft units (remove the thrust bearing if it is located in the pump). For hollow shaft units, remove the
headshaft and shaft coupling inside the discharge head.
• Replacement of the bearing located at the bottom of the seal housing requires removal of the driver in
order to get enough headroom.
8.5 Disassembly
Refer to “Parts List” on page 58 for part drawings and identification.
1. Disconnect the electrical leads from the motor.
2. Loosen the mechanical seal from the shaft.
3. Disconnect the pump shaft from the driver:
a. Hollow Shaft Driver: remove the headshaft nut lockscrew, headshaft nut, gib key and the driver clutch.
Unscrew and remove the headshaft from the shaft coupling inside the discharge head.
Required equipment and tools are as listed in “Pre-installation” on page 12 of this manual
and in the appropriate Pump Bowl Instruction Manual.
WARNING
PERSONNEL INJURY DUE TO HAZARDOUS MATERIALS
During disassembly, personnel may come in contact with hazardous materials. These
materials must be identified before disassembly, and the correct SDS must be made
available and appropriate safety management precautions put in place. Hazardous
pumpage must be purged and flushed from the pump prior to disassembly. Always wear
appropriate PPE.
WARNING
PERSONNEL INJURY
Threaded components typically require application of very high torques to disassemble (for
example, shaft couplings, threaded bowls, threaded columns, etc.). Always ensure the
tools and methods used for disassembly are appropriate for the forces/torques required.
CAUTION
MACHINED SURFACES
Protect all machined surfaces from burrs and scrapes as this can cause misalignment upon
reassembly.
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