My motor doesnt seem to go round freely

Does the shaft the motor derives spin freely? Either the motor is being overloaded or the motor is failing.

If the gearing is all free to move and you replaced the motor capacitor that only leaves the motor. If you can remove the motor and test it "out of the gearing" that would confirm it. You have wired the capacitor correctly and used the correct one? Just asking! Are you sure the gearing isn't jammed up?

Your mixer most likely has a stripped gears, or a combination of stripped gears. The 5kpm5ewh is an international model similar to the ksm5. The gearing inside the mixer will be the same, some of the electrical parts may differ.
Your mixer has a nylon worm gear inside, this is the most common gear to strip inside the mixer. I would recommend opening the mixer and inspecting all of the gears before you place an order.

Most likely you will need the worm gear, which is available by itself (http://www.mendingshed.com/kawormgear.html) or you can get it in the whole worm drive pinion gear assembly (http://www.mendingshed.com/kitchenaidgearassy.html) the whole assembly is a lot easier to replace, and will save you a lot of time. You may also need to replace the grease inside your mixer, KitchenAid recommends the Benalene 930-2 food grade grease, it is only available in a 30oz can (http://www.mendingshed.com/kagrease.html) And you will also need to replace the gearbox gasket (http://www.mendingshed.com/mixergasket.html).
To aid you in your repair, here is a link to the KitchenAid service manual (http://lib.store.yahoo.net/lib/mendingshed/kitchenaidservicemanual.pdf) This will walk you through how to take apart the mixer, replace the gear, grease and gasket, and reassemble the mixer.
Thank you,
ColleenCustomer ServiceMendingShed.com800-339-9297

THE MENDING SHED, HELPING YOU GET THE JOB DONE SINCE 1971.

Any appliance with a motor should rotate freely. These are basically gear driven devices, Kitchen Aid makes different quality equipment. So either the gears are worn or possibly if you notice an electrical smell the problem could be at the tail of the motor. there are 3 major components 1. the brushes where the armature spins if you look inside the vent holes you might see a slight arc while it is running 2. the tail piece which is how the motor is kept straight. or as I said worn gears. this is especially common when companies use plastic gears instead of metal ones. Commercial appliances made by people like Hobart are expensive, but they outlast most others..

The Nylon Worm Gear has stripped. This is designed into the part so if the Mixer gets overloaded, it won't burn out the motor. Which is odd if you have the reset switch like I do.

Part# 4162897

You can buy it online at Kitchenaid.com

Have you try to run the motor without engaing of worm gears? The worm gear 15T assembly need to remove in order for motor to run freely. check worm gear attach to motor shaft for any damaging.

take off the side cover where gear shifter is, you probably have the original arrow hart contactor in there ,that part is obsolete but you can get a kit from hobart to upgrade the control circuit

I'm sorry. Kitchenaid stand mixers do not have a pump in the motor, nor are they used for dispensing water.

Mine did almost the exact same thing one day. I have the Artisian Model, It would do it on any of the lowest speeds. Dont know if this will help you or not but I just ran mine the next day on all the way high with the spash guard on for making whipped cream for about 6 minutes full throttle and for some reason it hasnt went slow and shut itself off since then. Mine is about 7 months old. I called Kitchen Aid but their customer service all of a sudden seems to not know english worth a poo...

Try running yours on full blast for 5 minutes with something simple in the bowl. If its a 250 watt or higher make whipped water out of 2 cups of water and a tablespoon of cornstarch. Run it till you get what looks like whipped cream. Oh yea. Use the Balloon whip. The lubrication in the motor is supposed to last for at least 5 years but I have seen on numerous post's that if you run them on all the way for at least 5 minutes the oil will even out in the motor. Running the mixers at low speed alot will cause the oil inside not to move as freely since the motor doesnt heat up the oil in the gears.

Good luck.