angle grinder help required
Discussion
i have a makita angle grinder that i have a problem with.
the blade was changed last week and now when i have tried to change it . the spindle is jammed on. it does not appear to be cross threaded.
i have tried locking the grinder with the button,putting the spanner on and belting with a lump hammer but to no avail.
oh and i have sprayed it with wd40. can anyone suggest anything?
its not too old,about 12 months old or so
the blade was changed last week and now when i have tried to change it . the spindle is jammed on. it does not appear to be cross threaded.
i have tried locking the grinder with the button,putting the spanner on and belting with a lump hammer but to no avail.
oh and i have sprayed it with wd40. can anyone suggest anything?
its not too old,about 12 months old or so
jas xjr said:
i can see which way the thread goes..so thats not it......
next please!
I've never heard of a blade being that stuck on before. Generally brut force as a last resort would do it. Don't forget to dump the blade after getting WD40 on it. Not sure about the reverse thread thing though (can't remember back to training! havn't used one in quite a while)
gtr-gaz said:
They do stick a bit!.
Best thing to use, is the tip of a cold chisel in one of the holes and whack it round with a club hammer.
You can't really put the nut on the wrong way round. They are usually double sided, one has a shoulder for conventional discs, one side doesn't, for use with real thin cut off discs.
I never use the spanner for putting them on, only taking them off. Just tighten it by hand against the stop button. All the threads are conventional too, no left handed ones.
To get a tight one off hold the disc in a vice, use a drift to tap the nut round. Remember, left loosy, righty tighty.
Toss the disc in the rubbish after as you could have cracked it, and that WILL make a mess if it bursts at 8000rpm.
morrisman said:
They do stick a bit!.
Best thing to use, is the tip of a cold chisel in one of the holes and whack it round with a club hammer.
You can't really put the nut on the wrong way round. They are usually double sided, one has a shoulder for conventional discs, one side doesn't, for use with real thin cut off discs.
I never use the spanner for putting them on, only taking them off. Just tighten it by hand against the stop button. All the threads are conventional too, no left handed ones.
To get a tight one off hold the disc in a vice, use a drift to tap the nut round. Remember, left loosy, righty tighty.
Toss the disc in the rubbish after as you could have cracked it, and that WILL make a mess if it bursts at 8000rpm.
ive seen a 12 inch stone saw blade go, luckily it went down into the ground so no harm caused, the half that stayed in the saw was put into the ground rapidly as well.
jas xjr said:
You put the locking nut on the wrong way mate - this happened to me once! you need to lock the blade in a vice then use a hammer to tap the spanner - only way you'll unlock it!
What he said.
thanks for that but that cant be right shirly? if it was on the wrong way round i would not be able to fit the spanner to the holes on the spindle?
Unless you have a weird angle grinder, the nut can be put on either way round and the holes go right through so you can get the spanner on in either case. One side of the nut is flat - this flat side goes towards the disc when you're using a cutting disc. The other side has a spigot; when you're using a grinding disc, which is thicker, the spigot side goes towards the disc, so the spigot side provides some extra location.
What happens, though, is that the fact that it has the spigot makes it look like that side goes towards the disc whatever kind of disc you're using, and the natural tendency is to put the spigot side towards the disc when you're using a cutting disc. The spigot then goes too far through the disc and jams against the spigot on the backing nut on the other side of the disc. It usually still grips the disc, though, so you don't realise it's wrong until you can't get it off.
Unless you're bionically strong you'll then need to shock it off, which means you've got to clamp the disc in the vice so you have enough hands free, one to wield the hammer and one to hold the spanner in place. It's also a lot kinder to the grinder than trying to use the locking button to resist the blow. As has been noted, it does however bugger the disc. It's quite likely that using a buggered disc will not be particularly painful, because the nerves won't be able to react fast enough. You just have to put up with having bits missing. So do be sure to bin the disc.
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