Lock nut on Makita 9069 is stuck & I can't loosen it. Using the lock nut wrench, but it won't budge. Any suggestions?

try using the impact gun again only this time set it on do up tension as the bolt may be a left hand thread lock bolt /nut.

The chuck screw on drills is put in with lok-tite and is reverse threaded. You need to get the screwdriver on it firmly and turn it clockwise, as you are, with strong, constant pressure until it breaks free. Don't let the screwdriver slide out of the screw slot, if you round off the screw head you'll have to cut the chuck off. If it still won't break free, try putting the drill in a vice or use a screwdriver with a hex nut molded into the driver shaft so you can use a wrench for some more torque.

Because the locknut on grinders are threaded to be self tightening, they can get lodged on quite tight. If it's stuck that bad, put the body of the grinder snuggly in a vice but don't crack the casing. Make sure the arbor lock is seated well and put all the pressure you can on the locknut wrench you can muster. If it still won't come loose, squirt some liquid wrench on the arbor-locknut gap and let it soak in.

pur a long bar on the end of the socket say about 3ft long as the nuts have been done up with a wrench gun ,max torque for a wheel nut is 40lbs and yours are about 120 i reckon

Removing or installing the punch and die

Always replace the punch and die as a set.

To remove the punch and die, loosen the lock nut with the wrench.

Remove the die holder from the tool.

Use the hex wrench to loosen the bolts which secure the die. Remove the die

from the die holder.

Use the hex wrench to loosen the screw which secures

the punch.

Pull the punch out of the punch holder.

To install the punch and die, insert the punch into the

punch holder so that the notch in the punch faces toward

the screw.

Tighten the screw to secure the punch.

Install the die on the die holder.

Tighten the bolts to secure the die.

Then install the die holder on the tool so that the punch is

inserted through the hole in the die holder.

Tighten the lock nut to secure the die holder.

After replacing the punch and die, lubricate them with machine oil and run
tool as needed


Here is a link to a manual in case you need it to:

http://www.makita.ca/data/upload/tools/(JN1601)883894-943_75725_owner_English.pdf

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Probably not, Remember the nut is a reverse thread. Your best bet it to try some penetrating fluid or try tapping the nut with a screwdriver, hopefully the vibration will help loosen it. Another trick that sometimes works if the machine has a diamond blade or an abrasive wheel with some life left on it is to put on a pair of heavy duty work gloves. Lock the arbor and try to grab the wheel tight and try to spin the wheel loose with your hand. Don't forget to unplug the machine before attempting to remove the wheel.

There is not a lock on this saw. If the blade is to tight to hold by hand you need to use an impact wrench. It will loosen the nut before the blade has time to start spinning.

It should be a left-hand thread. Have you tried reversing your wrench direction? This should loosen it.

I trust that you had taken the cotter pin out of the castle nut.

There is a nut that you release from the middle of the grinder wheel, (grinder blade)
This nut is flat and has four holes in it.

You will see you are providing a spanner wrench to remove this nut. The wrenches' actual name is Lock Nut Wrench. It has a U shaped end with two pins sticking out. On on each side of the U shape.

The pins are inserted into the holes in the flat lock nut, located in the middle of the grinding wheel. The wrench is laid flat against the grinding wheel, with the two pins of the wrench going into any two holes of the nut.

At the top of the Makita grinder you will see a Black button. The button is pushed down to keep the grinding wheel from spinning. Holds the grinding wheel in place, as you turn the lock nut loose. When you release the button, a spring inside pushes the button back up out of the way.

As you view the Makita grinder, Release Button towards the Back, grinding wheel towards you, the nut is turned to the LEFT, to loosen. It is a Left threaded nut.

The grinding wheel spins to the Right. Using a left threaded nut insures that the nut will stay tight, due to the direction the grinding wheel spins.

You should be able to use a wrench, unless you have the style that needs a spanner (ring with 2 holes in it). Then, you will need the wrench to fit it. I made one with a piece of 1/8" flatbar and 2 #10 bolts. It isn't pretty but it works.