Viking Positive Displacement Pump LS1124A

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

Ensure all 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 and remove the O-Pro™ Barrier

Ensure pump ports are square and in proper position

Shim or move the pump as required

Was piping forced to line up with the ports?

Flexible Coupling Alignment Check

Remove any coupling guards or covers

Is the alignment of the coupling halves correct using a straightedge?

Is the alignment of the V-belts correct using a long straightedge or tightly drawn string?

Ensure the following safety measures are in place before starting

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 from the shaft (AK, AL, K, KK, L, LQ, LL, LS sizes only)

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

Loosen setscrews in mechanical seal rotary member