Hi can you please help me fide my combination on my Herring Hall Marvin manufactures lock the door is open and I have the lock of the door,the number that the fly is in does not correspond to the combination # how can I decode that
Thank you Jean
Answer Hi Jean,
Normally I don't recommend lock disassembly for the same reason I don't recommend using locksmiths for safe work - without correct knowledge of lock operation it is very easy to cause an expensive lock out.
Generally mechanical issues require hands on diagnostics to determine what the actual problem is, so my first recommendation would be to have it checked out by a trained safe tech from a local safe company.
The hole that the pin is in, should be the correct number for that wheel. If it isn't then there could be several problems.
1. You may be dialing the wrong numbers for the wrong wheels. The wheel closest to the drive wheel is your number three wheel and/or the third number of your combination. The wheel furthest from the drive wheel (in this case closest to the lock cover) is the number one wheel and consequently the first number of the combination.
2. If you are dialing the lock correctly with the numbers you have obtained from each wheel, and they still don't line up correctly, then I would examine the lock to ensure that the wheels are installed in the correct order. Many hand change locks have the numbers running one direction on the odd wheels and the opposite direction on the even wheels. If one of the wheels are out of position, then the numbers may be dialing up 180 degrees out, or not even close.
The dialing sequence will either be LRLR or RLRL, depending on the last turn of the drive wheel and lever engagement to retract the lock bolt. You should be able to determine this by observation of the lock while turning the dial. If this doesn't make sense, then this is why I would recommend having it checked out by a trained safe tech.
Alternately, if you can't figure out the combination by observation of the pins and holes, then you can figure out WHERE the lever would engage the wheel pack to unlock, and by observation of each wheel dial it up, going the correct direction for that wheel, until the wheel gate lines up at the engagement position. As the lock is pretty well sealed up, this could be fairly difficult, and may require dialing and disassembly several times to get the wheel pack to line up correctly. Obviously this is NOT the best way to do this and would be a last resort.
As you already have the lock disassembled, give it a try, but if you can't figure it out, then I wouldn't recommend wasting a lot of time on it - call your local safe company to have them recover or reset the combination for you.
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