Franklin Electric
Mechanical Shaft Seal Failure
Pump leaks water between motor and pump housing
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Worn ceramic/carbon shaft seal in Franklin Electric wet end, Misaligned motor and seal plate, Running pump dry causing seal overheating, Chemical imbalance attacking seal materials
How to Fix / Troubleshooting
Safety first: Turn off power and close suction and return valves. Relieve system pressure.
- Disassemble pump: Remove the motor from the pump housing following Franklin Electric instructions. Access the seal plate and impeller.
- Remove old seal: Carefully remove the rotating and stationary halves of the mechanical seal from the impeller and seal plate. Do not scratch the seal surfaces.
- Install new seal: Press the new stationary seat into the seal plate using a clean cloth. Install the rotating half on the impeller shaft. Avoid touching polished faces with bare fingers.
- Reassemble: Reinstall the impeller, seal plate, and motor onto the pump housing. Tighten bolts evenly.
- Test for leaks: Restore water flow and power, then run the pump and inspect for leaks at the seal area.
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Repair Difficulty
Hard
4/5
Required Part
Mechanical shaft seal
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