Baldor Reliance Electric Motor 10840-SB-TEFC

Section 3 – Sleeve Bearings (Oil Lubricated)

Select lubricating oil based on conditions

De-energize the motor by opening the manual disconnect switches

Remove drain plug and drain oil

Flush out the housing by filling with fresh oil and drain again

Replace plug and fill through filler cap until oil level is at proper level indicated on sight gauge

Tighten caps and plugs, fill constant level oiler if provided

Section 3 – Anti-Friction Bearing Removal/Replacement

Ensure safety precautions are in place

Is the bearing worn, oversized, or showing excessive wear based on TRG/bearing temperature monitoring?

Remove the end shield (see Sleeve/Anti-Friction Bearing Bracket Removal)

Remove the bearing using a conventional bearing puller with a spacer block to protect the shaft center

Clean and inspect all parts, removing all old grease

Ensure all shaft bearing shoulders and journals are free of nicks, dressing the shaft with emery cloth or stone as necessary

Heat bearing to 250°F (120°C) for at least 30 minutes

Place bearing onto shaft ensuring contact with the locating shoulder without using impact force

Section 1 – Storage (less than 6 months) – Horizontal Motors with Sleeve Bearings

Fill the bearing oil reservoir to the indicated level with the proper lubrication oil

Pour 4 to 6 ounces of oil onto the bearing liner before rotating the shaft

Rotate the shaft 10-15 revolutions to redistribute the lubricant

Ensure the following conditions are met

Remove shaft blocking before rotating the shaft

Verify that Duty Master motors with oil lubricated sleeve bearings are filled with oil containing a rust inhibitor

Section 1 – Storage (less than 6 months)

Ensure grease lubricated bearings are not lubricated during storage

Verify Duty Master anti-friction bearing motors are shipped with the proper amount of grease in each bearing

Record the number of days since last shaft rotation

Rotate the shaft by hand 10 to 15 revolutions

Replace protective packing and shaft shipping brace after rotating the shaft

Inspect the motor periodically and check insulation resistance monthly

Is the storage location cold, damp, or humid?

Select the method used to protect motor windings from moisture

Section 3 – Semi-Annual Maintenance − 6 months

Perform all quarterly inspections (see 3 Monthly Motor Periodic Inspection task)

Inspect and clean rotor ends, windings and fan blades (Open Motors only)

Check electrical connections for tightness and absence of corrosion

Section 3 – Winding Maintenance

WARNING — Solvents can be toxic and/or flammable — follow manufacturer's safety procedures and directions — failure to observe this precaution could result in bodily injury

CAUTION — Do not use solvents containing trichloroethane to clean interior or exterior of motor — damage may occur to paint and insulation systems

Disconnect and lockout the power source

Ensure no power is applied to the motor