Guide :Measuring Tools & Sensors : B362 605 KA4 DBL CYL DEADBOLT 4 EA 20536728
Schlage deadbolt simply failed to unlock, with key from exterior and from inside latch. The feel was like there was no resistance. The lock is only one year old and a previous Schalge deadbolt failed after about 10 years use. A new door and new lock set was professionally installed by Lowes. Just after warranty expired it became 'stiff' opening and I disassembled and re-installed. Worked fine for months. Yesterday it failed to open. Again it appears to function OK on installation with a little more 'resistance' on opening and closing. Not confident there is not a problem. ANY SUGGESTIONS?
Apr 17, 2009