Viking Positive Displacement Pump Q4124B

Ensure safety measures before opening any Viking pump liquid chamber

Install bracket bushing if removed due to wear

Install bracket and bushing assembly on the casing

Coat shaft of rotor/shaft assembly with light oil and insert into bracket bushing

Coat idler pin with light oil and place idler and bushing on idler pin in head

Install head and idler assembly on pump using a .010 to .015 inch thick head gasket

Install the lipseal in the bearing housing

Ensure all safety measures are in place before starting

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

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

Obtain a 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)

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

Select the type of lubricant used for the bracket grease fitting

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

Was multi-purpose NLGI #2 used for the bearing housing?

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