Gorman-Rupp Pump 63E31-B

Inspect the impeller for cracks or wear

Does the impeller have wear rings?

Is the impeller cracked or badly worn?

Replace the impeller if it is cracked, badly worn, or has wear rings that require replacement

Slide the impeller onto the shaft

Secure the impeller with the tab washer and impeller nut

Inspect lubricant for evidence of rust

Inspect lubricant for moisture condensation

Is the lubricant suitable for current temperature conditions?

Consulted factory or lubricant supplier for recommended oil grade in cold weather

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

Remove the seal retaining ring with caution

Is further disassembly required?

Seal Reassembly and Installation

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

Is the seal being reused in an emergency?

Inspect the impeller shaft for distortion, nicks, scratches, or damage to the shaft threads

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 using a suitable tool.

Clean and inspect the bearings in place.