Viking Positive Displacement Pump L4124B

Ensure pressure in the chamber is completely vented through appropriate lines 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.

Insert brass or plastic bar through port opening between rotor teeth or lock coupling end of shaft to prevent turning.

Bend up tang of lockwasher and remove locknut and lockwasher from shaft using a spanner wrench.

Remove brass or plastic bar from port opening.

Ensure pressure in the chamber is completely vented

Lock out or make non-operational the driving means

Identify the liquid the pump has been handling

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

Loosen the two set screws in the outer face of the bearing housing

Rotate the bearing housing clockwise until it cannot be turned anymore

Mark the outside diameter of the bearing housing and the pump bracket

Ensure pump ports are square and in proper position

Shim or move the pump as required

Is piping forced to line up with the ports?

Flexible Coupling Alignment Check

Remove any coupling guards or covers

Check alignment of the coupling halves using a straightedge

Check alignment using a long straightedge or tightly drawn string across the face of the sheaves

Select the oil type based on temperature conditions

Enter the current lubricant level in the reducer

Is the lubricant level at the proper level?

Is additional oil required to reach the proper level?

Ensure pressure in the chamber is completely vented

Lock out or make non-operational the driving means

Identify the liquid the pump has been handling

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

Mark valve and head for proper reassembly

Measure and record length of extension of adjusting screw