Viking Pump N324A

Ensure all pressure in the chamber has been vented through appropriate openings or connections.

Lock out or make non-operational the driving means (motor, turbine, engine, etc.).

Identify the liquid the pump has been handling and understand the necessary safety precautions.

Obtain and review the material safety data sheet (MSDS) for the liquid.

Mark head and casing before disassembly to ensure proper reassembly.

Remove nuts from head and use jackscrews to back head away from casing.

Avoid damaging head gasket and prevent idler from falling from idler pin.

Bracket and Bushing Installation

Install bracket bushing with groove at 12:00 o’clock position if applicable.

Install bracket and bushing assembly on the casing ensuring proper alignment with locating pin.

Coat rotor shaft assembly with light oil and insert into bracket bushing.

Coat idler pin with light oil and place idler and bushing on idler pin in head.

Head and Idler Assembly Installation

Install head and idler assembly on pump using a .010 to .015 inch thick head gasket.

Ensure idler pin is positioned correctly for proper flow of liquid through pump.

Mark valve and head before disassembly to ensure proper reassembly

Measure and record length of extension of adjusting screw

Loosen locknut and back out adjusting screw until spring pressure is released

Remove bonnet, spring guide, spring and poppet from valve body

Clean and inspect all parts for wear or damage

Identify the type of mechanical seal

For other seal types, refer to the Seal Installation Drawing (SID) or contact a Viking representative

Ensure the pump is turned off and isolated from the power source

Gather necessary tools and replacement parts

Ensure all pressure in the chamber has been vented through appropriate openings or connections.

Lock out or make non-operational the driving means to prevent accidental start-up.

Identify the liquid handled by the pump and understand necessary safety precautions.

Obtain and review the material safety data sheet (MSDS) for the liquid.

Remove any circulation tubing connected to the seal gland.

Loosen setscrews on the seal collar to free the cartridge seal from the shaft.