Viking Pump LL4124AE

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

Check for any metal particles or contaminants in the drained oil

Remove any visible debris from the pump exterior

Was the pump exterior wiped down with a clean cloth?

Clean the pump casing thoroughly

Inspect and clean grease fittings

Is the pump free from dirt and grease?

Note any areas that require further cleaning or attention

Initial Bearing Housing Adjustment

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

Rotate the bearing housing clockwise until it cannot be turned anymore

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 as per 'Table 4' on page 14

Final Bearing Housing Adjustment

Rotate the bearing housing counter clockwise until the marks align

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

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 each reducer size?