Manual

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.

• A worn pump can have components that have very sharp edges. Wear protective gloves.

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:

• Allen wrenches

• Brass drift punch

• Cleaning agents and solvents

• Dial indicators

• Drill

• Feeler gauges

• Induction heater

• Lifting sling

• Micrometer

• Open end wrenches

• Press

• Soft face hammer

• Spanner wrench

• Spanning type puller

• Tap

• Torque wrench with sockets

58 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance

Manual