Floor keepers are typically fastened to sliding doors by two screws.

Place a blanket or rug onto the floor and lay the door onto it for a safe spot.

Use a hand vacuum or scrub the tracks with a toothbrush to clear away dust.

Look for any splotches of oil and wipe it over the surface of the tracks evenly.

Keep adjusting the door’s roller height until there’s enough space between the door and track that it can glide across it uninterrupted.

A standard hammer or rubber mallet works best.

Attach a piece of oak strip wood to the bottom of the door using standard glue if you want to make sure the bottom surface is completely level.

If your tracks look broken or old, loosen the screws to remove them and swap in some new ones.

Use a Phillips head screwdriver to remove the 2 screws holding the roller in place Most rollers have 2 settings: lower and raised. If it’s set to raised and still getting stuck, you need to replace the roller. Rollers can be purchased for $5 to $10 each at hardware stores.

Be careful not to lean the door more than 15 to 30 degrees from the top track—this will put it at risk of falling.

Pushing the door upward into the top track gives the door enough space to fit into the bottom track. Remember to make sure that the top rollers are directly above the top track’s hinge when pulling the door downward. Successfully attaching your door requires you to do this while at the same time angling the door so that the bottom of the door fits into the bottom track. [12] X Expert Source Ryaan TuttleHome Improvement Specialist Expert Interview. 24 September 2021.

For horizontal adjustment on the top track, begin by loosening the screw in the top pivot bracket. Then, move the door toward or away from the jam until there is 1⁄4 inch (0. 64 cm) clearance, and then retighten the screw. For horizontal adjustment on the bottom track, lift the door from the bottom and move the adjusting wheel toward or away from the jam until the doors are plumb with the jam. Lower the door back into the bracket when you’re done. For vertical adjustment, lift the door slightly until the adjustment wheel clears the slot in the lower bracket. Rotate the adjustment wheel to the left to raise the door, and to the right to lower it. When you’re done, gently lower the teeth of the adjustment wheel into the bracket and be sure to lock it firmly in place.