Gorman-Rupp Pump 64C71S-B

Remove the seal retaining ring with caution

Remove the spring centering washer

Lubricate the shaft and work oil up under the rubber bellows

Slide the rotating portion of the seal off the shaft

Use a stiff wire with a hooked end to remove the stationary seat and O-ring

Ensure not to damage the seal faces

Seal Reassembly and Installation

Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent

Inspect the impeller for cracks or wear

Does the impeller have wear rings?

Is the impeller cracked or badly worn?

Consult the factory for the new impeller part number if replacement is needed

Slide the impeller onto the shaft

Secure the impeller with the tab washer and impeller nut

Lubrication — Oil Lubricated Bearings

Refill the bearing housing with clean oil

Is the pump operated continuously or in an environment with rapid temperature change?

If yes, describe the frequency of oil changes needed

Lubrication — Oil Lubricated Bearings

Check the oil level at the oil cup

Is the oil level at the top of the cup?

Add SAE No. 30 non-detergent oil if lubrication is required

Remove the air vent before adding oil

Shaft and Bearing Removal and Disassembly

Is there evidence of wear or damage on the shaft and bearings?

Place a drip pan under the bearing housing before removing the shaft and bearings.

Remove the oil cup and drain the bearing cavity if equipped with oil-lubricated bearings.

Disengage the attaching hardware and remove components

Use an arbor or hydraulic press to remove the oil seal from the bearing cap.

Tap the shaft and assembled bearings from the bearing housing using a block of wood.

Remove the oil seal from the bearing housing if present.

Clean and inspect the bearings in place.