Question about Polaris Pb4 - 60 Booster Pump
Removing the Impeller, is actually not that bad. You say it's rusted on but I have to ask why you think it's "rusted". I have to assume it's just on real tight and you just assumed it's rusted. If your removing the impeller I have to assume either you need to place the shaft seal, the motor, or the impeller itself is bad and your replacing it. Either way the procedure is pretty much the same. To remove the impeller you need to lock the motor and unscrew impeller. Depending on the motor, you remove have a cap in the middle of the tail piece and hold with a wrench, usually 9/16", or remove a cap that covers the whole end and grab the shaft with a wrench (usually 7/16") by sliding it under one of the components and then turning impeller. If the impeller has a bolt or screw in the middle remove that first. It should be reverse thread so make sure you don't turn the wrong way and break or strip. If there is no screw, or after you've removed it, just spin the impeller off (it should be counter clockwise standard thread). If you can't do it by hand and assuming you don't have an impeller wrench, be very careful and use a large pliers, pipe wrench, or strap wrench to loosen it. After that you can unbolt the motor from the seal plate. If the Impeller is corroded, or rusted as you say and it's really hard to remove, you just have to man handle it. If the impeller breaks or the brass insert strips out, you'll have to cut it away till you get to the shaft and can use channel locks, locking pliers etc to remove the insert however necessary. It is rare for this to happen, but it can happen. Impellers can break, fail, or strip out like anything else.
Hope this helps. If you need further assistance post a reply in the comments, and don't hesitate to leave good thumb rating if you found this helpful. Thanks, and good Luck!
Posted on Sep 29, 2010
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