You can't they are sealed. You just replace them. The sealed bearing units are shown here. Change them yourself and save a callout and an hour and a half labour.https://www.google.com/search?q=LG+TROMM+bearings
Sears Parts Direct is one source of the parts diagrams, https://www.searspartsdirect.com/model/1vc37q1bdj-003204/lg-wm3987hw-washer-parts . See the Dispenser assembly parts diagram for the water inlet valve. If you can watch the entire cycle, try turning off the shut-off valves for the washer inlet hoses after the rinse cycle and before the dry cycle starts. Water should not flow into the washer/dryer with the shut-offs closed.
I've seen inlet valve solenoids fail in the open position or in the closed position. I've never seen a control board that sent open messages randomly. (Sometimes, there is damage to the control board or corrosion or damaged wiring that stops the control board from sending the open/closed message to the solenoid.)
I hope this helps.
Cindy Wells
To load your LG washing machine, open the door of the machine, and place your laundry inside, close the door securely, and follow the machine's user manual for specific instructions on turning it on from the manual book.
It could be from a load that is not balanced.Or the drain filer might be clogged and full of debris and needs to be cleaned out. Also the drain hose maybe be kinked or twisted too.
That is the problem with top loaders, central agitators and long items like towels, They get tangled and tear. It is also likely that your towels are worn out.
To wash successfully, you need a lot of water and only 3 or 4 towels.
Front loaders don't do that and uses a tenth of the water and energy to heat that water.
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It will be fine. The transit bolts are there to protect the springs and dampers from stretching if the machine is tilted or laid on its back during shipping to the seller and delivery to the home.
In use with the transit bolts removed it allow the springs, the shock absorber and the big concrete block to absorb movement as the spin evens out the balance of the clothes with the first part of the spin. It also stops the machine walking across the floor as all of the movement is transferred to to case and feet.
It will be fine, I have done it myself after I moved from one house to another and then didn't do any washing for a week or two.
Enjoy your new machine. Finally, just for fun