How do you change the cylinder on a UPVC door lock?
Md Ariful Islam
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Dr. Md Rushad Rahman
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Unscrew the screw on the faceplate along the edge of the door. Put the key on the inside lock barrel and turn it slightly to the left and right wile pulling it toward you at the same time. Eventually, the cylinder will slide out. Simply reverse the process to install a new cylinder.
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