How to pull the rear bearing out of lg washing machine to replace it?

When you do hear your LG washing machine making a loud banging type of noise on the spin cycle it could be caused by overloading or a loud that is unbalanced Or the bearing has worn out and needs replacement.

If the washer is making a loud noise the rear drum with bearing might need to be replaced. On this washer the bearing might not be sold separately, the entire rear drum might have to be replaced. This is a very involved repair and will require disassembling most of the washer. However, the problem is going to get worse very quickly and so either the drum and bearing will need to be replaced or the washing machine.

LOUD NOISES IN MACHINE;

LOT OF THINGS TO CHECK, THE BELT LOOSE OR WORN, THE CLUTCH, THE TRANNY, THE BEARINGS BOTH TUB SEAL AND BEARING, THE REAR DRUM BEARING,
THE DRIVE PULLEY- If the washer is making a loud noise the drive pulley might be worn out, cracked, loose or bent. Remove the drive pulley and inspect it carefully. If it is damaged or defective replace it.
THE TRANSMISSION, THE MOTOR COUPLER, THE MOTOR DRIVE BEARINGS,
THE DRIVE MOTOR- If the washer is making a loud noise the drive motor bearings may have worn out. Washer motors are normally almost silent when they run. If the motor is run without a belt hooked up to it and it's loud it will have to be replaced.

Check presence a stranger subject in drum. Shine the torch and swing the drum.
If rubbish no that necessary to change the bearings.

well sounds to me your gonna need a technician could be a rear bearing problem but check lower filter trap first there gonna bee some water uses a bucket and a couple of towels check for obstruction if no obstruction the probably rear bearing and spider assy...

rear bearing is generally included with the rear outer drum ***'y. seals and bearings are already pressed into it. it will require much disassembly of machine. hopefully, the motor rotor/stator/drum spider shaft is not damaged too.

The rear half of the outer wash drum (which contains the rear bearing and tub shaft seal) needs to be replaced. On a 1 - 10 scale, this rates a difficulty rating of about an 8. An experienced appliance tech can do it in about 2 hours, and hit you up for about $500. I do not suggest this as a do it yourself repair. Did you know that the new LG machines use a balance ring to make them much smoother running? (Hint: It may be wiser to replace the machine.)

THE SOUND YOUR HEARING IS THE REAR BEARING BETWEEN THE STATOR AND THE DRUM. IF YOU'LL PULL THE BACK PLATE OFF THE WASHER IT'S PROBABLY STARTING TO GET A LITTLE DRIP RIGHT ABOUT NOW TOO. BEARING COSTS AROUND $20.00 OR SO AND IS RELATIVELY EASY TO CHANGE. YHE EASIEST WAY TO MAKE SURE IT'S THE BEARING WITHOUT PULLING IT OUT AWAY FROM THE WALL IS OPEN THE FRONT DOOR AND SEE IF YOU CAN SHAKE THE DRUM UP AND DOWN AND SIDE TO SIDE.

You can try a puller but typically it is recommended to replace the entire rear outer tub half (which comes with the bearings already pressed into it). You will also need the tub seal that goes between the front and rear tub halves. Hope this helps.

One of 2 things may be causing the loud noise.  Either the rear bearing on the drum has failed and will need to be replaced (very expensive) or the drain pump has a bearing problem and is making a very loud noise when it is draining (not too expensive).  Either way, you will need a qualified LG technician to diagnose and repair the problem.