Viking Positive Displacement Pump Q1124A

Ensure pressure in the chamber is completely vented

Lock out or make non-operational the driving means

Identify the liquid the pump has been handling

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

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

Rotate the bearing housing clockwise until it cannot be turned anymore

Mark the outside diameter of the bearing housing and the pump bracket

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

Bracket Grease Fitting Lubrication

Add grease to the bracket grease fitting until it comes out of the relief fitting on the opposite side of the bracket

Regrease the bearing housing until grease comes out of the shaft end lip seal

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

Removal of Component 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)

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

Loosen setscrews in mechanical seal rotary member

Ensure safety measures are in place before opening the pump chamber

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 and remove bearing housing assembly from bracket

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

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

Thread jack bolts into tapped holes and remove O-Pro™ Barrier through bearing housing opening