Viking Positive Displacement Pump H4124B

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

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

Oil Type and Quantity Verification

Verify the correct oil type based on temperature

Verify the correct oil quantity for each reducer size

Ensure the machine is turned off and cooled down

Place a container under the drain plug to collect old oil

Remove the drain plug and allow the old oil to completely drain out

Replace and secure the drain plug

Oil Type and Quantity Verification

Verify the correct oil type based on temperature

Verify the correct oil quantity for each reducer size

Check lubricant level for A Size reducer

Check lubricant level for B Size reducer

Check lubricant level for C Size reducer

Is the lubricant level adequate for all reducer sizes?

Has the end clearance increased due to wear?

Refer to TSM for specific model series and describe the adjustment procedure

Verify improved pump performance after adjustment

Record the pump pressure after adjustment