Viking Positive Displacement Pump LQ4124B

Ensure the following safety measures are in place before starting

Insert length of hardwood or brass through port opening to keep shaft from turning

Bend up tang of lockwasher and remove locknut and lockwasher from shaft

Loosen set screws in the face of the bearing housing and remove the bearing housing assembly

Remove the pair of half round rings under the inner spacer collar from the shaft (K, KK, L, LQ, LL, and LS sizes only)

Loosen the gland nuts securing the O-Pro™ Barrier and remove the T-bolts

Thread the jack bolts into the tapped holes on the face of the O-Pro™ Barrier and remove it

Is the idler bushing and idler pin showing moderate wear?

Replace idler bushing and idler pin if moderate wear is detected

Ensure idler does not slide off the idler pin during head removal

Describe any personal injury or part damage if idler slides off

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

Removal: Cartridge Mechanical Seal

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

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

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

Remove the pair of half round rings under the inner spacer collar from the shaft (AK, AL, K, KK, L, LQ, LL, LS sizes only)

Remove any flush or barrier fluid tubes connected to the seal gland

Replace or turn centering clips to original position

Ensure all safety measures are in place before opening the pump chamber

Removal of Component Mechanical Seal

Insert brass or plastic bar through port opening to keep shaft from turning

Bend up tang of lockwasher and remove locknut and lockwasher from shaft

Loosen set screws in the face of the bearing housing and remove the bearing housing assembly

Remove the pair of half round rings under the inner spacer collar from the shaft

Loosen nuts and remove seal holder, seal seat and seal gasket(s)

Loosen setscrews in mechanical seal rotary member

Select the oil type based on temperature conditions

Verify the oil quantity for each reducer size

Drain the old lubricant from the reducer

Refill the reducer with the new lubricant

Is the oil filled to the proper level?