Flowserve Pump MK3 HSI 3×2-10

Check for contaminants in the bearing housing

Drain the oil from the bearing housing

If contaminated, describe the cause and corrective actions taken

Ensure the work area is clean and free from dust, dirt, oil, grease etc.

Use non-flammable, non-contaminated cleaning fluids

Is the bearing housing operating temperature under 71°C (160°F)?

Is the external housing temperature below 94°C (200°F)?

Stop the pump and lock the motor

Remove the pipe plug from both the inboard and outboard bearing location

Apply the correct amount of grease

Ensure all parts are thoroughly cleaned and inspected

Use new bearings, O-rings, gaskets, and lip seals

Replace any parts showing wear or corrosion with new genuine Flowserve parts

Measure shaft runout and ensure it is 0.025 mm (0.001 in.) FIM or less

Check radial deflection — static and ensure movement is not more than 0.05 mm (0.002 in.)

Verify axial shaft movement (endplay) on a Durco pump is 0.03 mm (0.001 in.) or less

Ensure seal chamber face squareness run-out is less than 0.08 mm (0.003 in.)

Check seal chamber register concentricity is less than 0.13 mm (0.005 in.)

Pre-Lubrication Safety Measures

Stop the pump and lock the motor

Measure the external housing temperature

Is the external housing temperature within the acceptable range?

Remove the pipe plug from bearing locations

Enter the amount of grease for Group 2 inboard bearing (cm³)

Confirm satisfactory operation by checking the following

Record the surface temperature at the bearings

Is the surface temperature within the acceptable range? (Oil bath: 82°C, Oil mist: 82°C, Grease: 94°C)

Is the bearing temperature below the maximum exposure limit of 105°C?

Ensure overload prevention measures are in place

Perform routine vibration monitoring

Check and remove dirt from areas around close clearances, bearing housings, and motors in dirty or dusty environments