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id suggest penetrating oil first and let it soak, then warm the shaft with a heat gun torch or blow dryer and with a smaller than the key punch try to rock it out from one end to the other with a small hammer. try not to dent the shaft of course
Take the cover off the housing that covers the flywheel. The crank shaft comes up the middle of the flywheel and has a slot in the end. The slot has the woodruff key in it. The key fits in the slot on the flywheel. When you hit something with the blades the crankshaft stops and the flywheel keeps turning. This shears off the woodruff key or makes it move out of position and then the timing becomes out of spec. The motor wont start. You need to pull the flywheel off and replace the woodruff key. They key looks like a half moon piece of metal.
Usually there is not. The timing is through the flywheel that connects to the crankshaft and it is permanently set with a woodruff key. When evereything is tight, the timing is good. IF you hit something and cause the blades to stop, the flywheel can move and twist on the shaft and bend the woodruff key. The engine then wont start or will backfire etc. To fix this you need to pull the flywheel off the crankshaft and replace the woodruff key and reinstall it.
hi this depends on what harmonic balancer you are inquiring about, normal balancers do have a woodruff key,but the pulley type harmonic balancer only bolts to a cam hub on what ever it is connected to, such as water pump, etc etc... hope this helps
From what I have seen on the three seperate models of jointers in the DJ20 series there is no woodruff key between the motor shaft and the pulley. I know there is a slot there though. There should only be a set screw that holds the pulley in place. The only woodruff key used on this model is for the cutterhead and pulley assembly and the part number for that is 428070790005. If you are certain there is a woodruff key that goes between the motor and motor pulley you may want to contact your local dewalt service center and inquire as to how you can obtain a replacement.
Hi Bobbyak, if you still need to know, there is no key. It is a D shaped shaft, the pulley has the D cutout built in. It is a tight fit to pull off, but it will come off with some wiggling effort. There is just enough room. Remove the belt. Mark the side facing the trans for when you refit. Don't give up and don't drop the transaxle. I just didn't catch the reason you wanted to remove the pulley.
It could be that you are missing a shaft key, look to see if there is a groove in the shaft and in the flywheel if so there should be a key in this groove to keep the shaft from slipping.
Your local hardware store should have one. You will need to Measure the keyway width and height to buy key stock of those dimensions then cut off the length you need.
If it is a Woodruff or Half Moon key it might be harder to find the right one but a good hardware can do it.
Hope this helps.