Letter combination locks open the same way as number combination locks, but you line up letters instead of digits. The exact steps depend on whether your lock has a rotating dial or individual scroll wheels, since these two designs work differently. Here’s how to open both types.
Opening a Scroll-Wheel Letter Lock
Scroll-wheel locks, like those made by WordLock, are the most common letter combination locks. They have four or five independently rotating rings, each printed with letters. To open one, rotate each ring until your combination word lines up with the small notch or indicator ridge on the edge of the locking mechanism. Once all the letters are aligned correctly, pull the shackle or cable and the lock releases.
The process is straightforward, but a few details trip people up. Make sure you’re reading the letters at the correct reference point. Most scroll-wheel locks have a small raised line or groove between the body and the rings. That’s your alignment mark. If you’re lining up letters with the wrong edge, the lock won’t open even with the right word. Also check that each ring is fully clicked into position rather than sitting between two letters.
Opening a Dial-Style Letter Lock
Dial-style letter locks, like the Master Lock 1590D, use a single rotating dial printed with letters instead of numbers. These require a specific turning sequence, not just stopping on the right characters.
The standard opening procedure has four steps:
- Turn the dial right (clockwise) three full rotations, then stop at your first letter.
- Turn the dial left (counterclockwise) one full turn, passing the first letter once, and stop at your second letter.
- Turn the dial right again and stop at your third letter.
- Pull up on the shackle to open.
The initial three clockwise turns are a clearing step that resets the internal mechanism. If you skip them or lose count, the lock won’t open even if you land on the correct letters. Start over from scratch any time you make a mistake rather than trying to correct mid-sequence.
How the Lock Works Inside
Inside every combination lock, whether it uses letters or numbers, a set of wheels (called tumblers) rotate as you turn the dial or scroll the rings. Each wheel has a small notch cut into its edge called a gate. A metal bar called a fence sits against the edges of all the wheels at once. When you dial in the correct combination, every gate lines up in a row, and the fence drops into them. That retracts the bolt and frees the shackle.
This is why precision matters on dial-style locks. If one wheel is even slightly off, its gate won’t line up with the fence, and the shackle stays locked. Scroll-wheel locks are more forgiving because each ring clicks into discrete positions, so you can’t land between letters as easily.
Why the Lock Won’t Open
If you’re entering the correct combination and the lock still won’t release, try these fixes. First, apply light upward pressure on the shackle while entering the last letter. Some locks need a gentle pull to help the fence drop into the gates. Second, on dial-style locks, make sure you’re turning in the correct direction for each step. Reversing clockwise and counterclockwise is the most common mistake. Third, check whether your letters are truly aligned. On scroll-wheel locks, look at the indicator mark straight on rather than from an angle, since parallax can make it look like you’ve landed on the right letter when you’re actually one position off.
Temperature can also be a factor. Metal contracts in cold weather, and locks left outside through winter sometimes need a firm tug or a few drops of lubricant to free the shackle after the correct code is entered.
If You Forgot Your Combination
Scroll-wheel locks with four rings and 10 letters per ring have 10,000 possible combinations. That’s technically few enough to try every one by brute force, but it would take hours. Before going that route, check whether the lock has a serial number. Master Lock can recover combinations for locks with serial numbers through three channels: bringing the lock (unattached to anything) to an authorized retailer, submitting a notarized lost-combination form by mail, or sending a photo of the lock and its serial number through their online contact form. The mail option takes four to six weeks; the photo option takes seven to ten days.
If there’s no serial number, the manufacturer has no record of your combination. For set-your-own scroll-wheel locks, there’s no recovery method at all. You’ll need to either try combinations systematically or cut the lock.
Resetting to a New Combination
Most scroll-wheel letter locks let you choose your own word. The typical reset process works like this: open the lock with your current combination, then look for a reset mechanism. On many padlock models, this means pushing the shackle down and rotating it 90 or 180 degrees while the lock is open. With the shackle in the reset position, scroll the rings to spell your new word using the same indicator mark you use for opening. Then return the shackle to its normal position, and the new combination is set.
The exact reset method varies by brand and model, so check the instructions that came with your lock if possible. The key principle is the same across all of them: you must have the lock open first before you can change the code. Pick a word you’ll remember but that isn’t obvious to someone who knows you. Avoid common choices like your name or “WORD,” since letter locks have relatively few total combinations compared to number-based ones.