Viking Positive Displacement Pump LL4124B

Is the end clearance within acceptable limits?

Record the current end clearance measurement

Adjust end clearance as per TSM guidelines

Is the pump performance improved after adjustment?

Select the oil type based on temperature conditions

Verify the oil quantity for each reducer size

Drain existing oil from the reducer

Refill with the selected oil type to the proper level

Is the lubricant level correct after refill?

Ensure the following safety measures are in place before opening any Viking pump liquid chamber

Obtain and review the material safety data sheet (MSDS) for the liquid

Insert brass or plastic bar through port opening between rotor teeth or lock coupling end of shaft to keep shaft from turning

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

Remove brass or plastic bar from port opening

Loosen the two setscrews in the face of the bearing housing and remove the bearing housing assembly from the bracket

Remove pair of half round rings under the inner spacer collar from the shaft (K, KK, LQ, LL, LS Sizes ONLY)

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

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