Gorman-Rupp Pump 65A31-B

Lubrication — Oil Lubricated Bearings

Check the oil level at the oil cup

Remove the air vent if lubrication is required

Add SAE No. 30 non-detergent oil

Ensure oil is not over-lubricated

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 equipped with one.

Clean and inspect the bearings in place.

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 no damage to the seal faces

Proceed to Seal Assembly if no further disassembly is required

Seal Reassembly and Installation

Pump and Seal Disassembly and Reassembly

Ensure safety precautions are followed

Clean and reinstall the drain plugs

Provide adequate ventilation and prohibit smoking

Wear static-resistant clothing and shoes

Clean up all fuel spills immediately

Loosen the coupling on the pump drive shaft

Inspect the impeller for cracks or wear

Is the impeller equipped with wear rings?

Do the wear rings require replacement?

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