Viking Pump L4124A

Select the oil type based on temperature conditions

Verify the oil quantity for each Viking reducer size

Drain the old oil from the Viking reducer

Refill with new lubricant to the proper level

Is the oil filled to the proper level for the selected size?

Remove valve cap covering the adjusting screw

Loosen locknut on the adjusting screw

Install a pressure gauge in the discharge line

Adjust the pressure setting by turning the adjusting screw

Close the discharge line beyond the pressure gauge

Limit the operation time to prevent rapid temperature rise

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

Gather necessary tools and materials, including Light Refrigeration Oil and a container for old oil

Place a container under the reservoir to catch the old oil

Open the drain plug and allow the oil to completely drain out

Has all the old oil been drained from the reservoir?

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

Rotate the bearing housing in a clockwise direction until it cannot be turned any more

Make a mark on the outside diameter of the bearing housing

Make a corresponding mark on the pump bracket

Make another mark on the pump bracket per 'Table 4' on page 14

Rotate the bearing housing in a counter clockwise direction until the mark on the outside diameter of the bearing housing lines up with the second mark on the pump bracket

Check pump ports to ensure they are square and in the proper position

Shim or move the pump as required to align ports

Ensure piping is not forced to line up with the ports

Remove any coupling guards or covers

Check alignment of the coupling halves using a straightedge across the coupling

Refer to Figure A10-A for visual guidance