Goulds Pumps 3640 - IOM - Manual (Page 54)

Maintenance
Disassembly
Disassembly precautions
WARNING:
• This manual clearly identifies accepted methods for disassembling units. These methods must be
adhered to. Trapped liquid can rapidly expand and result in a violent explosion and injury. Never
apply heat to impellers, propellers, or their retaining devices to aid in their removal unless explicitly
stated in this manual.
• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical
injury.
• Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear
steel-toed shoes at all times.
• The pump can handle hazardous and toxic fluids. Identify the contents of the pump and observe
proper decontamination procedures in order to eliminate the possible exposure to any hazardous or
toxic fluids. Wear the proper personal protective equipment. Potential hazards include, but are not
limited to, high temperature, flammable, acidic, caustic, explosive, and other risks. You must handle
and dispose of pumped fluid in compliance with the applicable environmental regulations.
• A small amount of liquid will be present in certain areas like the seal chamber.
NOTICE:
• Avoid injury. Worn pump components can have sharp edges. Wear appropriate gloves
while handling these parts.
• Make sure that all replacement parts are available before you disassemble the pump for
overhaul.
Tools required
In order to disassemble the pump, you need these tools:
• Brass drift punch
• Cleaning agents and solvents
• Dial indicators
• Drill
• Feeler gauges
• Induction heater
• Lifting sling
• Micrometers (inside and outside)
• Open end wrenches
• Press
• Soft face hammer
• Spanner wrench
• Spanning type puller
• Tap
• Torque wrench with sockets
Prepare for disassembly
CAUTION:
Allow all system and pump components to cool before you handle them to prevent physical injury.
1. Close the isolation valves on the suction and discharge sides of the pump.
2. Drain the liquid from the piping; flush the pump if necessary.
52 Model 3640 Installation, Operation, and Maintenance Manual