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CM/CMU Series Fire Pumps
Waterous Company 125 Hardman Avenue South, South St. Paul, Minnesota 55075 USA (651) 450-5000
Type of Overhaul
Complete Disassembly of Pump
Replacement of Packing or Mechanical
Seals Without Disassembling the Pump
Removal and Installation of Transfer
Valve
Instructions subject to change without notice.
Overhaul Instructions
Form No.
Section
F-1031
4212
Table of Contents
Pump Drive
Transmission Mounted Directly to the Rear
of the Pump
Transmission Mounted Directly to the Front
of the Pump
Direct Drive (The pump is driven by a
remotely mounted transmission or P.T.O.,
the pump is turned by an end yoke on the
impeller shaft.)
Direct Drive or Transmission Mounted
Directly to the Pump
Direct Drive or Transmission Mounted
Directly to the Pump
Visit us at www.waterousco.com
Issue Date
Rev. Date
06/30/95
5/11/18
See
Table
Page
1
3
2
4
3
5
4
6
5
7
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Summarization of Contents
General Overhaul Information
Tools and Equipment
Lists necessary tools and equipment for pump overhaul.
Preliminary Testing
Guidance on performing tests before pump disassembly.
Cleaning
Instructions for cleaning pump components during overhaul.
Pump Bodies, Impellers and Transfer Valves
Procedures for cleaning and inspecting pump bodies, impellers, and valves.
Bearings, Gaskets, Seals and O-rings
Recommendations for replacing wear parts during overhaul.
Impeller Shaft
Guidance on examining and preparing the impeller shaft.
Installing Ball Bearings
Instructions for properly installing ball bearings onto shafts and into housings.
Installing Body Gaskets
Procedure for applying sealant to body gaskets for proper sealing.
End Yoke and Companion Flange Nuts
Important notes on reusing self-locking nuts and thread preparation.
Outboard Bearing Removal (Prior to 4/21/2006)
Outboard Bearing Removal (without Lube Pump, Prior to 4/21/2006)
Procedure for removing outboard bearing without lube pump before 4/21/2006.
Outboard Bearing Removal (After 4/21/2006)
Outboard Bearing Removal (After to 4/21/2006)
Procedure for removing outboard bearing after 4/21/2006.
Outboard Bearing Installation (Prior to 4/21/2006)
Outboard Bearing Installation (without Lube Pump)
Steps for installing outboard bearing without lube pump before 4/21/2006.
Outboard Bearing Installation (with Lube Pump)
Steps for installing outboard bearing with lube pump before 4/21/2006.
Outboard Bearing Installation (After 4/21/2006)
Outboard Bearing Installation (after 4/21/2006)
Steps for installing outboard bearing after 4/21/2006.
Packing - Braided Flexible Graphite (BFG)
Packing Removal
Procedure for removing braided flexible graphite packing from the pump.
Packing Installation
Packing Adjustment
Steps for adjusting packing for optimal leakage and cooling.
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