Worm gear 238V partially desinigrated (won't raise blade). Can I get a 2-3 paragraph discussion on how to change worm gear. thanks

238v 238v 238v

CHECK THE RETURN SPRING

check with hamilton beach

I answered this for you in the blender dept, it will almost certainly be the fuse gear and that's machine cases apart to look in the gearbox.
Fuse gear part number is
4162897 Worm Gear
If you want to make the repair a little faster then the fuse gear already mounted in the bracket is another option
240309?2 Worm Gear Bracket And Gear
I call it a fuse gear, they call it a worm gear.

Most often this is caused by the handle or wheel that is used to raise/lower the blade coming loose on the shaft that operates the worm gear in the trunnion. There is frequently an allen set screw that locks this wheel onto the shaft and this set screw comes loose or is lost. If loose, simply tighten it.
Otherwise, it may be time for some routine maintenance. Unplug the saw, clean all sawdust and debris from under the saw using compressed air if possible, and then lubricate the worm gear/gear box and trunnion ways. Some people prefer silicone for this, some use WD40. I prefer normal motor oil. In any event you will need a long oil spout to direct the lubricant into the worm gear and gears, then/while raising and lowering the saw. Also lubricate the angle adjustment gears.
If you keep your saw properly lubricated, it will function easily and be a joy to adjust. Otherwise, it can become a struggle or just impossible.
Good luck.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

You need to do some maintenance on your saw. First unplug it. Then blow out the sawdust from inside the saw, especially around the trunnion ways and gears and worm gears that engage them to raise/lower and tilt the saw. Use a good quality lubricant to lube these worm gears and the shafts and pivot points. I use motor oil, have for years, and find it does a better job and lasts longer than any kind of grease or silicone. Use an oil can with a long spout so you can direct the oil where needed, then move the saw up/down or right/left to work the oil into the worm gear and mechanism. In a pinch WD40 is fine, though it won't last as long. Periodic re oiling will maintain the mechanism in peak condition, and the drops of oil you spill in the process won't do any damage to your so. No, it won't get gummed up with sawdust. Try it, you'll like it.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

I have the same model, same problem too. I was able to get the adjustment better by a light greasing of the worm gear, I took this one step farther and made a cover for the worm gear shaft so it doesn't always get loaded with sawdust, ( i cut a solid dryer vent pipe in half and placed it over the worm gear , seems to help a lot, once cut I wrapped it in a round placement and just zip tied it in place

Try lubricating with silicone spray. I use it for just such things, and I'm happy with how it works. Also, clean and lubricate the lock on the elevation control.

--W/D--

Just for your information there are not many parts available for this model any longer.

With that said, it may be something rather simple. I get this type of problem all the time. Does the blade have the diamond punchout still in the blade or has it been punched out? Make sure that the the type of mount is the same as the hole for the blade. Another thing to check is to make sure the clamp washer is there under the blade. This is the part that will have a raised lip that goes through the hole in the blade just enough to center it. If that is missing you can replace it with a new one: part #143783-00 . If those 2 solutions do not work, it is your main drive gear. The worm is probably ok but the gear is probably shredded. This part is unavailable and renders your saw useless.

on some models, the adj. handle/wheel has to be pushed in in order for the gear to engauge