Viking Pump G4124A

Check pump ports for squareness and proper position

Shim or move the pump as required to ensure proper alignment

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 alignment guidance

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 and 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 end clearance with feeler gauge between idler and rotor faces, if possible

Apply multi-purpose grease, NLGI # 2, to all lubrication fittings using a hand gun

Record any lubrication issues or observations

Grease O-Pro™ seals with a compatible lubricating fluid

Record any issues or observations with O-Pro™ seals lubrication

Are there any high or low temperature conditions?

Specify the type of lubrication used for special temperature conditions

Ensure initial packing adjustment is made carefully

Is the packing gland over-tightened?

Does the inspection reveal the need for packing gland adjustment?

Does the inspection reveal the need for packing replacement?

Contact Viking Pump® representative for Engineering Service Bulletin ESB-521 regarding repacking pump

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.

Measure one pint of Light Refrigeration Oil.