Greenheck Fan 459968 manual Fan Bearing Replacement, Model TCF, Model QEI

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Fan Bearing Replacement

Replacement of bearings requires disassembly of internal components. For this procedure access must be available to both the inlet and outlet ends. The following procedure assumes belts have already been loosened and removed. (Belts are removed by adjusting the motor pivot plate).

Reinstall components in reverse order of removal. Reference the Radial Gap, Overlap & Alignment section to ensure proper wheel installation.

Model TCF

1.Remove cover plate from drive chamber (outlet side).

2.Unbolt and remove inlet cone (inlet side).

3.Loosen set screws at the wheel hub and remove wheel (inlet side).

4.Unbolt both sets of bearings from support bars (outlet side).

5.Remove shaft/bearing assembly (outlet side).

6.Replace bearings on drive shaft.

Cover

Shaft/Bearing Plate

Housing Assembly

Inlet Wheel

Cone

Model QEI

If the bearings cannot be removed from the shaft due to corrosion or damage, the bearing plates can be removed from the inner chamber. The shaft/bearing/ bearing plates can be removed as a complete assembly from the fan inlet.

1.Unbolt and remove inlet cone (inlet side).

2.Loosen set screws at the wheel hub and remove wheel (inlet side).

3.Remove bolts from drive bearing plate (outlet side).

4.Remove bolts from wheel bearing plate (inlet side).

5.Pull shaft/bearing/bearing plate assembly out of the fan housing (inlet side).

6.Replace bearings on shaft/bearing/bearing plate assembly.

 

Shaft/Bearing/

Housing

Inlet

Bearing Plate Assembly

 

Cone

Wheel

 

®

Models TCF and Model QEI/QEID Centrifugal 7

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Contents General Safety Information Installation, Operation and Maintenance ManualHandling Inspection and Maintenance during StorageReceiving UnpackingRadial Gap, Overlap & Alignment InstallationSlip-Fit End Connection QEI/QEID Non-Ducted InstallationUnit Start-Up Duct ConnectionsVibration MaintenanceBelt Drives Motors Belt ReplacementFan Bearing Lubrication Model TCF Fan Bearing ReplacementModel QEI Warranty Troubleshooting