wrote:
On Sat, 3 Jan 2015 10:07:41 -0800, "tdacon"
wrote:

wrote in message
...

On Thursday, June 10, 2010 9:51:29 AM UTC-5, gray asphalt wrote:
Ryobi from Home Depot ... I realize it's a reverse thread.
Ryobi supples two wrenches and there seems to plenty
of torque. Still under return for 45 more days but I hate to
return an item this expensive because someone overightened
the nut at the factory. If I get the nut off will I have damaged
anything? ... I mean if the damage isn't obvious. Is there any
damage done from overtightening in the first place?

I have the same issue except that I change the blade one time and now I
can't get the darn thing off. Tried for about 2 hours still no success.
Grrrrrrrrrrrrrrr

Got a heat gun? Aim it at the nut and the end of the arbor and let it heat
things up for a while, until you don't want to be leaving your finger on it
for more than a moment. Put your two wrenches on the arbor and the nut,
brace the arbor wrench with the heel of your hand, and tap the nut (in the
correct direction!) with a mallet or a hammer. Use a brass hammer if you've
got one.

Once you've got it off, take a look at the mating face of the nut to see if
it's been galled from over-tightening. If so, touch it with a small flat
file if necessary to take off any proud metal, then flatten it on a piece of
sandpaper or crocus cloth, using the table as the backing surface.
Afterwards, as an occasional maintenance task, give the arbor threads and
maybe the face of the nut a fingertip wipe with some anti-seizing compound.
It's not a lubricant, so you don't need to worry about it causing the nut to
loosen.

Tom



Actually it IS a bit of a lubricant - but I oil my threads and the
nuts still don't come loose.

You might be applying oil to the wrong place. Are the arbor threads
rusted? You might apply a light film between the arbor nut and flange
washer.