Viking Positive Displacement Pump LS4124B

Ensure all pressure in the chamber has been 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.

Carefully remove valve cap covering the adjusting screw.

Loosen locknut to allow pressure setting adjustment.

Install a pressure gauge in the discharge line.

Ensure the following safety measures are in place before starting

Removal: Cartridge Mechanical Seal

Insert brass or plastic bar through port opening between rotor teeth to keep shaft from turning.

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

Loosen two set screws in the face of the bearing housing and remove the bearing housing assembly from the bracket.

Remove the pair of half round rings under the inner spacer collar from the shaft (AK, AL, K, KK, L, LQ, LL, LS sizes only).

Remove any flush or barrier fluid tubes connected to the seal gland.

Replace or turn centering clips to original position.

Select the oil type based on temperature conditions

Verify the oil quantity for each reducer size

Drain the old lubricant from the reducer

Refill the reducer with the new lubricant to the proper level

Is the oil level correct after refilling?

Select the appropriate oil type based on temperature

Verify the oil quantity for each reducer size

Drain existing oil from the reducer

Refill with the correct type and quantity of oil

Record the lubricant level after refill

Did the idler slide off the idler pin during removal?

Is the idler bushing showing moderate wear?

Is the idler pin showing moderate wear?

Replace idler bushing if showing moderate wear

Replace idler pin if showing moderate wear