The Gorman‑Rup Pump U4A60-B/F

Initial Temperature Measurement

Measure and record the bearing temperature using a contact-type thermometer

Is the bearing temperature within the normal range (up to 160°F or 71°C)?

Is the bearing temperature below the maximum safe operating temperature (180°F or 82°C)?

Is the bearing lubricant of the proper viscosity?

Is the lubricant at the correct level?

Potential Causes of Overheating

Remove Rotating Portion of Seal

Slide the shaft sleeve and rotating portion of the seal off the shaft as a unit

Remove Stationary Element and Seat

Use a pair of stiff wires with hooked ends to remove the stationary element and seat

Remove the hardware (25 and 26) and separate the seal plate (27) and gasket (3) from the bearing housing (5)

Position the seal plate on a flat surface with the impeller side down

Use a wooden dowel or other suitable tool to press on the back side of the stationary seat until the seat, O-rings, and stationary element can be removed

Remove the shaft sleeve O-ring (22)

Review all SAFETY information in Section A

Follow the instructions on all tags, labels, and decals attached to the pump

Familiarize yourself with this manual

Disconnect or lock out the power source to ensure that the pump will remain inoperative

Allow the pump to completely cool if overheated

Check the temperature before opening any covers, plates, or plugs

Close the suction and discharge valves

Vent the pump slowly and cautiously

Has the power source been removed to provide clearance?

Loosen the impeller while the rotating assembly is still secured to the pump casing.

Remove the seal cavity drain plug (18) and drain the seal lubricant.

Clean and reinstall the seal cavity drain plug.

Impeller Immobilization and Removal

Immobilize the impeller by wedging a block of wood between the vanes and the pump casing.

Remove the impeller capscrew and washer (28 and 29).

Check the oil level through the sight gauge (17)

Is the oil level at the middle of the gauge?

Add SAE No. 30 non-detergent oil through the air vent (8) if lubrication is required

Ensure the white reflector in the sight gauge is positioned horizontally