Bell & Gossett In-Line Mounted Pump 604

Remove the eight capscrews that hold the bearing assembly or adapter ring to the volute.

Insert a long punch between the impeller vanes or grasp the impeller with a strap wrench to prevent the impeller from turning.

Remove the impeller nut, lockwasher, impeller, and adapter ring.

Seal Parts and Coverplate Removal

Select your bearing assembly type

Install the new coupler on the pump shaft

Ensure the coupler setscrew is seated in the shaft dimple

Lift the motor into position and attach the motor side coupler half

Ensure the coupler setscrew is seated in the shaft dimple on the motor side

Support the motor and install the four screws that hold the motor to the bearing assembly

Attach the conduit and power leads to the conduit box

Connect the power leads to the motor leads

Check for proper motor rotation (clockwise when viewed from the back of the motor)

Clean the shaft sleeve and seal seat recess

Polish the sleeve using crocus cloth

Install the seat gasket and seat into the seal recess

Lubricate the seal boot with soapy water

Slide the complete seal head over the shaft

Ensure the protrusions in the driver remain engaged in the notches in the carbon

Position the coupler half on the pump shaft

Select the pump shaft type and coupler size

If dimpled shaft, ensure setscrew is positioned over the dimple and tightened

If keyed shaft with size 4J coupler, ensure shaft end extends 0.25 in. past the coupler half flange face and setscrews are tightened

If keyed shaft with size 5J coupler, ensure shaft end is flush with the coupler half flange face and setscrews are tightened

Position the coupler half on the motor shaft

If dimpled shaft, ensure setscrew is positioned over the dimple and tightened

If keyed shaft, ensure coupler half is slid onto the motor shaft without tightening setscrews

Remove the spring retainer and seal spring

Pry the compression ring off the seal boot

Insert a standard screwdriver under the seal head and carefully pry the seal head off the shaft

Use a small screwdriver to loosen and remove the seal seat and gasket

Is the seat retainer in good condition?

If the seat retainer is in bad condition, pry it out and replace it with the new one provided in the seal kit