Question about Hayward 1HP Super Pump II Inground Pool Pump

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Leak between seal plate and pump/strainer housing

I have a Hayward Super Pump II that is leaking. It is leaking between the seal plate and the pump/strainer housing.I have replaced the housing gasket but it still leaks. Any ideas?

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  • Anonymous Mar 22, 2014

    Utilitech pump



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The pump seal is leaking and needs replacing and requires removing four 3/8 bolts (9/16) wrench and removing the motor then the diffuser to get to the impeller and seal . A 7/16 wrench holds the rear motor shaft behind the springs and impeller spins off to reveal the seal which has two parts one on the impeller with a spring and one in the seal plate is white ceramic/ porcelan whatever they use. Part number is an SPX1600KA on super pumps and 1500KA wassome above grounds. When replacing do not touch the mating white and black surfaces with your fingers.

Posted on Jul 20, 2009


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Thank youfor posting your question here on The leak is likely caused by a defective pump seal. If you look at the parts breakdown at you can see the seal and the other parts that must be separated in order to replace the seal.

THE HARD WAY! Once you are sure the seal is defective you need to buy a new one along with a diffuser gasket, a pump housing gasket and some pump gasket grease.

The 4 housing cap screws and the impeller must be removed in order to remove the 4 motor cap screws. The hardest part of this process is removing the impeller. The cover on the other end of the motor should be removed and the motor shaft held with a wrench. The impeller must then be removed by turning it with a large pump pliers or by inserting a screw driver into one of the holes on the outer edge of the impeller in order to turn it counterclockwise with the shaft held with the wrench. If this damages the impeller it should be replaced.

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Remove the piping from the motor and the electrical conduit and wires from the end of the motor. Bring the pump to Leslies pool supplies (I don't work there or own any of their stock) . If they are not very busy then they will do the above and only charge you for the parts while you wait.

I have replaced so many seals I almost always do it myself at the pool site but it is not easy for the first timer.

Ifthis answer does not resolve your issue, please comment with additional informationbefore rating the answer. Positive feedback is especially appreciated once yourproblem is solved! Thank you.

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Thank you for posting your question here on

The pump would have gotten very hot running all that time dry...the best way to fix your situation would be to replace all the o-rings/gaskets and the pump seal. All told the parts are about $20 and should include:


If you are still having a leak, replace the drain plugs and the gaskets at the union connectors on the inlet and outlet. Here it gets a little tricky. Hayward sells them as parts kits: the plugs are SPX4000FG; the unions SP2700UNKIT. You can probably buy a bag of o-rings from a local power transmission supply house that will work for far less...something like $6 for each bag. Take one of each there and they can ID the best o-ring to use.

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