How do you pull the impeller off of the shaft for a Dynamo 1-1/2 sn 1-22-EO3?

J5s is a back pull out. Remove the bolts holding the front casing to the motor. Remove the diffuser. The impeller will either be screwed on. ie the impeller is moulded with a thread, or key wayed .ie a separate metal nut holds down the Noryl impeller and a small piece of "key" steel keeps the impeller on the shaft.
Remove the rear fan cover, and either use a flat screw driver (if there is a slot in the rear of the shaft) or a shifter (if the shaft has a hex) or you may have to prise the fan off. to get a good hold of the shaft.
Hold the rear of the shaft, and with the correct socket undo the hex on the impeller. either the nut or the whole impeller will come off. If just the nut type. Use cable ties to thread down the centre of the impeller to the out side and join. do this in a couple of places.Use these as a lever point to pull off the impeller.
The seal just pulls off. there is two parts stationary and rotating.( 18th may, yourve probably worked it out by now)

The impeller is threaded onto the motor shaft. On 2hp motors and above, there is usually a screw with reverse threads to help secure impeller to shaft. To remove impeller, first remove screw(reverse threads) Next, remove back cover off motor. The shaft either has a slot for a screwdriver or flats for a wrench. Hold shaft and unscrew impeller.

You can use a 2 Leg Bearing Puller ..
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This is from one of my previous posts, may be some extra steps, but should cover what you need... Turn off the electric first. Now split the pump in two by removing the large clamp or 4-6 bolts holding the two halves together. (not the 4 bolts holding the motor to seal plate, but the the bolts holding the seal plate to the seal plate housing). Once you remove the clamp or bolts, the motor with seal plate, diffuser, and Impeller can all be pulled back away from the pump. Then disconnect the electrical from the motor and you can pull the motor with the seal plate, and impeller all the way out and work on it. To get to the impeller, you need to remove the diffuser (plastic housing that goes around the impeller) usually by a series of 3 to 6 small screws. To remove the impeller you need to lock the motor and unscrew impeller. Depending on the motor, you remove a cap in the middle of the tail piece and hold with a wrench, or remove a cap that covers the whole end and grab the shaft with a wrench (usually 7/16") by sliding it under the thermal overload switch, or removing the capacitor for even easier access. Once you've locked the shaft, you can just unscrew impeller. If the impeller has a bolt or screw in the middle remove that first. this screw will 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 (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 unbolt the motor from the seal plate, pull the seal plate away from motor (this removes half the seal), and then pop the other half of the seal from the seal plate. Make sure to replace the shaft seal, and use a tiny bit of pool lube on the rubber parts when installing, but keep the white ceramic, and black graphite surfaces 100% free of any dirt, grease, etc while working with them. Installation is pretty much just the reverse. Install half the seal into the seal plate. Install the seal plate onto motor and bolt into place. Install other half of seal onto shaft. Screw impeller onto shaft and install screw (if one was there to start with) in center of impeller (reverse thread). install diffuser over impeller make sure it is centered and doesn't rub the impeller hub. Install new diffuser and valute o-rings. Hookup wiring before re-attaching to rest of pump. Clamp or bolt back together. Pour plenty of water into pot to prime and flip the motor on for a sec or two. Pour some more water. Install pot lid. You should be good to go. Keep in mind there are many different pumps and some variations to the above instructions, but the above should cover most situations. Hope this helps. If you need further assistance post a reply in the comments, and don't hesitate to leave a good thumb rating if you found this helpful. Thanks, and good Luck!

WITH LOTS OF LUCK . THEY SCREW OFF(OFF TO THE LEFT LOOKING AT THE IMPELLER SO COUNTER CLOCKWISE ) VICE GRIP OR SCREW DRIVER ON SHAFT TO HOLD IT, THING IS IF THE SHAFT IS RUSTY YOU HAVE A REAL GOOD CHANCE OF BREAKING IT AND IMPELLERS CAN BE HARD TO FIND.. THE SEAL SHOULD BE # 1000 FOR THAT PUMP... BEST OF LUCK.. J

You will need to pull the front of the pump off then unscrew the impeller. The impeller will be set on the shaft and will take some force to break free. Hold ing the back of the shaft and using water pump pliers on the face of the impeller will usually work but sometimes I will wedge a screwdriver in the fin of the impeller and hit it sharply (not hard) with a hammer to break it free. Then the housing will just pull free of the motor. When replaceing, the impeller just goes on hand tight. Hope this helps and good luck.

I had a similar problem. Found the drain pump impeller had a crack causing it to slip on the motor shaft when engaged. Had to replace the entire pump. Model #DW-5470-11

no its a sign of somthing stopping impeller take strainer out and check for sticks or something stopping it impeller iis in housing behind water cup may have to be removed try taking a pliers and turning shaft while pump is off this may free it

Remove the cover from the back of the motor and lock the shaft from turning. Then spin off the impeller.

The bore in the impeller is spun out. Mix some JB Weld and apply a liberal amount to the bore of the impeller, install it back on the motor shaft and rotate the shaft a 1/2 turn to distribute the weld before cure. Originally the impeller was a press fit. Don't allow food to get sucked into the pump, lock down and damage to the impeller will occur