The Gorman‑Rup Pump SFDV4D

Review all SAFETY information in Section A

Ensure all power to the motor is shut off at the control box

Use a lifting device with sufficient capacity

Ensure load is balanced when using slings or chains

Take necessary precautions to prevent personal contamination if handling sewage

Select a suitable indoor location for maintenance

Ensure all work is performed by qualified personnel

Ensure the pump is completely cooled before servicing.

Do not remove plates, covers, gauges, pipe plugs or fittings from an overheated pump.

Initial Oil Check and Replacement

Check the oil level in the seal cavity before initial startup.

Drain and replace the oil after the first 200 hours of operation.

Check the oil level in the seal cavity after the first two weeks of operation.

Check the oil level in the seal cavity every month thereafter.

Use the hoisting bail to remove the pump from the wet well or sump

Move the pump to a suitable location for disassembly

Ensure the pump is not lifted by the motor power cable or the piping

Attach proper lifting equipment to the lifting device fitted to the pump

Ensure chains or cables are positioned to avoid damage and balance the load

Is removal of the guide shoe desired?

Disengage the hardware securing the guide shoe to the pump casing

Secure the pump in an inverted position for further disassembly.

Seal Plate and Retaining Ring Removal

Remove the seal plate as described in Lower Seal Removal.

Remove the seal retaining ring using snap ring pliers.

Remove the spring centering washer and seal spring.

Lubricate the seal area of the rotor shaft and work oil up under the bellows.

Ensure water-tight integrity of the motor was not disturbed during disassembly

Drain all oil from the seal cavity

Connect the vacuum pump or compressor/venturi system to the pump at the seal cavity drain plug hole

Draw the seal cavity vacuum down to not more than 10 In. Hg.

Was there any change in vacuum reading detected?