Viking Pump GG4197

Warning: Keep pump as clean as possible. This will facilitate inspection, adjustment and repair work and help prevent overlooking a dirt covered grease fitting.

Upload a photo of the cleaned pump

Danger! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) be sure:

Pressure in the chamber has been completely vented through the suction or discharge lines, or other appropriate openings or connections

The driving means (motor, turbine, engine, etc.) has been “locked out” or made non-operational, so that it cannot be started while work is being done on pump

You know what liquid the pump has been handling and the precautions necessary to safely handle the liquid

Upload the material safety data sheet (MSDS) for the liquid

Failure to follow above listed precautionary measures may result in serious injury or death

When installing graphite bushings, extreme care must be taken to prevent breaking. Carbon graphite is a brittle material and easily cracked. If cracked the bushing will quickly disintegrate. Using a lubricant and adding a chamfer on the bushing and the mating part will help in installation

A press was used for installation

Danger! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) be sure:

Pressure in the chamber has been completely vented through the suction or discharge lines, or other appropriate openings or connections.

The driving means (motor, turbine, engine, etc.) has been “locked out” or made non-operational, so that it cannot be started while work is being done on pump.

You know what liquid the pump has been handling and the precautions necessary to safely handle the liquid. Obtain a material safety data sheet (MSDS) for the liquid to be sure these precautions are understood.

Failure to follow above listed precautionary measures may result in serious injury or death.

Loosen two screws in face of thrust bearing assembly.

If shaft cannot be rotated freely, turn thrust bearing assembly counter clockwise until shaft cannot be turned easily.

While turning rotor shaft, rotate thrust bearing assembly clockwise until noticeable drag occurs (this is zero end clearance).

Danger! Before opening any Viking pump liquid chamber (pumping chamber, reservoir, relief valve adjusting cap fitting, etc.) be sure:

Pressure in the chamber has been completely vented through the suction or discharge lines, or other appropriate openings or connections.

The driving means (motor, turbine, engine, etc.) has been “locked out” or made non-operational, so that it cannot be started while work is being done on pump.

You know what liquid the pump has been handling and the precautions necessary to safely handle the liquid.

Upload the material safety data sheet (MSDS) for the liquid to be sure these precautions are understood.

Carefully remove valve cap, which covers adjusting screw. Loosen locknut, which locks adjusting screw so pressure setting will not change during operation of pump.

Install pressure gauge in discharge line for actual adjustment operation.

Turn adjusting screw to increase pressure and out to decrease pressure.