Combination Locks : How to Open if you Forgot the Code
- Method 1: Cracking the Code of Combination Locks. Know your lock. A combination lock has three main components. ...
- Method 2 : Creating a Shim for Combination Locks. Consider the lock. ...
- Method 3 : Using the Serial Number of Combination Locks. Locating the serial number. If the lock has a number punched on it, jot it down. ...
Full Answer
What can I do if I Forgot my lock combination?
The Faster Method – Dialing & Listening
- Push the unlock button and hold it down or apply constant pressure on the shackle if it’s a padlock
- Slowly turn one of the dials and listen for a click. If you hear a click this is the right number
- Repeat for all the dials.
- When all the dials are correct if you are still pushing the unlock button or pulling the shackle the lock should open.
What to do if you forgot your master lock combination?
To set or reset the combination on your Master Lock 1520D, 1523D, 1524D, or 1534D lock:
- Open the lock and remove the shackle.
- Pull off the metal end cap.
- Remove all combination wheels.
- Make sure the red marks remain aligned with the Master Lock logo. ...
- Snap the metal end cap back into place. ...
- Close the shackle and scramble the wheels to lock.
- Record your combination in a safe place.
How to open TSA lock forgot combination?
What to Do
- If the lock is closed, open it by applying pressure to the lock. ...
- Turn the dials of the lock while listening to the clicking sounds. To get the right numbers of your combination, turn the dials of the lock. ...
- After opening the lock, set the dials into 000. ...
- Turn and push the shackle then put in your desired combination. ...
How to unlock a combination lock without knowing the combination?
Method 2 : Creating a Shim for Combination Locks
- Identify the locking mechanism. To properly use a shim you require to be working at a place where the shackle locks. ...
- Make two curved incisions. Hold the small strip of aluminum horizontally and cut two curves from the bottom, somewhat resembling the letter U.
- Pop open the lock. ...
I've lost or forgotten the combination to my Master Lock lock. What can I do?
Does your Master Lock lock have a serial number? If it doesn't, we won't be able to help you find your combination because we don't have a record o...
I lost the combination to my Master Lock Set-Your-Own Combination lock. Can you help me reset it?
Unfortunately no. You cannot reset this lock without knowing the current combination. You'll likely need to purchase a new lock.
I accidentally reset the combination on my Master Lock resettable combination lock. Now I don't know...
Unfortunately, you cannot reset this lock without knowing the current combination. You'll likely need to purchase a new lock.
I've lost the reset tool for changing the combination on my lock. How can I get a new one?
As a courtesy, our customer solutions group can issue you a replacement tool free of charge. You will need to supply the model number or an image o...
How can I retrieve my lost combination when my Master Lock lock is attached to a bike, cabinet, lock...
We will not provide lost combinations if the lock is attached to anything.
I'm unable to get a legible photocopy of my lock for the Lost Combination Form. What should I do?
Try lightening the copy as much as possible. The most important thing is that we can see that the lock is not attached to something.
How do I set the combination on my Master Lock 5400D / 5401D Key Safe?
To set or reset the combination on your Master Lock 5400D / 5401D Key Safe: Open the compartment door by entering the combination. The factory-set...
How do I set the combination on my 5422D / 5423D Push Button Lock Box?
To set or reset the combination on your 5422D / 5423D Push Button Lock Box:Open the lock box by entering the combination. If you're setting the com...
How do I set the combination on my 5424D / 5425D Spare Key Storage Safe?
To set or reset the combination on your 5424D / 5425D Spare Key Storage Safe: Open the compartment door by entering the combination. The factory-se...
How do I set the combination on my Master Lock 5406D Spare Key Storage Safe?
To set or reset the combination on your Master Lock 5406D Spare Key Storage Safe: Open the compartment door by entering the combination. The factor...
How to recover a lost combination lock?
You can visit a Master Lock Distributor / Retailer or submit a Lost Combination form.
What is the factory set combination on a lock?
Open your lock by entering the lock combination. The factory-set combination is 0-0-0-0.
How to reset a syringe?
Push the reset lever left and down. The lever will remain in this position while you reset the combination.
How to open lock box?
Open the lock box by entering the combination. If you're setting the combination for the first time, press the "CLEAR" (C) button and then press the "OPEN" button.
How many combinations can you have on one notarized lock?
Have the form notarized by a Notary Public to prove you are the owner of the lock. You can include up to 6 combinations on one notarized form.
How to set a number on a recode tool?
Use the included yellow recode tool or a small flathead screwdriver, PUSH and TURN the numbers or symbols you want to use to the SET ON position. Make sure that the numbers or symbols that you are not using are set to the SET OFF position.
How long does it take to respond to a symlink?
We will respond in 7-10 days.
How to reset a master lock?
Master Lock Reset. To reset a combination lock, such as those made by Master Lock, you'll first need to find its serial number. Contact the manufacturer of the lock with this information . You'll most likely need ID and proof of purchase, particularly if the lock is attached to a box or safe. The manufacturer will be able to reset the combination ...
What side is the lock mechanism on?
The locking mechanism will be on the left-hand side. You'll need to exert some pressure on the lock's latch – enough so the dial can turn, but not so much that it spins freely. This tension is essential in order to feel when you hit the right number of the combination and the mechanism engages. Advertisement.
How to change a latch?
It's best to start clockwise and then change to counterclockwise. What's most important is remembering which direction you started with. Turn the dial. If it never catches, you haven't put enough pressure on the latch. If it's clicking at every number, you've put too much pressure on the latch.
Where do you put a shim on a lock?
They usually come with specific instructions. Generally, they're inserted into the left-hand side of the lock's latch and trick it into coming open. Shims don't tend to work on newer locks, however, and can end up damaging the mechanism instead. Advertisement.
Can you use combination locks on cupboards?
By Annie Walton Doyle Updated August 30, 2018. Hunker may earn compensation through affiliate links in this story. Combination locks can be used on cupboards, boxes and safes to secure valuable or important goods inside. However, trouble can arise if you forget the combination code to unlock it.
Can you break a combination lock with brute force?
While most manual combination locks can be broken using brute force, this takes a lot of time and energy, and for good reason. Luckily, there are other ways to open a combination lock when you don't remember the combination. Advertisement. How to Unlock a Combination Lock Without Knowing the Combination.
Working Mechanism of Combination Lock
Manufacturers design suitcase 3-digit combination locks to let you modify the combination to a unique code that only you know.
How to reset Luggage lock?
First of all, try to unlock it. You must have your lock set to the correct combination most of the time before changing it to something else. Make sure you enter the valid code and that it opens. If the bag is brand new, the materials will almost certainly include the combo. It’s most likely only triple zero.
Using Lever to Reset the luggage Lock
The lever may be hidden on the interior of the luggage. It’s also probable that it’s near the combination gears around the outside. To open the lock and release the zippers, you’ll have to remember the combination in either case.
Code Altering of Shackle Lock
First, you must open the lock must be open. Put the lock to the correct code, which is most likely “000” if the lock is brand new, and lift on the shackle to unlock it.
How to find a lock combination?
Practice pressure. To find a lock combination you will need to pull up gently on the shackle. Too much pressure will make it impossible to turn the dial. Too little and the dial will spin freely. You should exert gentle pressure. This may take some practice.
What is a combination lock?
Combination locks are used for a variety of purposes, from school and gym lockers to securing items within the home. If you lose the combination it can be very frustrating not to have access to your belongings. If you don't want to cut open the lock, there are other methods to try. These steps can help you open a combination lock without a code, ...
How to get a lock on a shackle?
Find the first number. Pull up gently on the shackle and hold it in place. Turn the dial clockwise listening carefully until you hear the lock click.
What is the dial on a lock?
The dial is the portion with numbers that turns. The body is the rest of the lock. If you hold the lock with the shackle on top and the dial facing you, typically the locking mechanism is on the left side of the shackle. ...
How to find the second number on a shackle?
Turn the dial counterclockwise to find the second number. Maintaining gentle pressure on the shackle, turn the dial slowly. You should go all the way around the mechanism once before reaching the second number.
Where is the shim on a lock?
Usually the locking mechanism is on the left side if you are looking at the lock with the shackle on top and the dial facing you.
What is the stopping point on a lock?
Eventually the lock hit a point where it will be very difficult to turn. This stopping point is the second number. Note it on the same piece of paper.
How to reset a combination padlock?
Adjusting the dials to 0 is the beginning step to reset combination padlock. Then, take the reset tool and push it in the side hole of your lock chamber. Turn the item about 90° in either direction.
What is the drive pin on a lock?
Each of the wheel sides includes a wheel fly, while the drive pin ensures all these wheels make contact with each other. When the lock dial receives the correct sequence, all of the wheel notches line up on a spindle to pop your lock open.
How does a wheel lock work?
Each number on the lock has a wheel. As one dial is turned, the connecting spindle for each wheel will rotate its drive cam. The attached drive pin of this cam makes contact with the wheel fly’s tiny tab, which is close to the wheel.
What is a combination lock?
A combination lock (using a bike lock as an example as shown in the pictures above) has three or more dials with a keyhole through the centre of them. When correct code (in this case 9-2-4) is entered the keyholes of all the dials on the lock become aligned and toothed pin (second picture) can be inserted. When the dials are moved or jumbled, the keyholes become dis-aligned and the toothed pin cannot be removed and is therefore locked in place.
Why is a rope used to pick a combination lock?
When picking/cracking a combination lock a length of rope can be used to create a makeshift handle to give you a better grip of the lock. A good grip is necessary because in order to crack ...
Why is it important to have a strong even force on a lock?
Being able to apply strong even force on the shackle is vital in order to put a greater amount of friction on the locks dials so that when a dial is turned to the correct number it will result in a resounding 'click' and a slight upward movement of the shackle.
Why is it important to have a good grip on a lock?
A good grip is necessary because in order to crack the lock you will need to apply a strong and even upwards force on the shackle throughout the entire procedure and this can be difficult to obtain with just bare hands.
How to turn lock combination to right?
If you know the code, place the lock so the combination dial faces you. Then, turn the combination to the right three times but on the third time, stop at your first digit of the code. Then, turn the dial left one complete turn, passing the first digit and stopping at the second digit of your code.
What to do if you don't know the combination of a master lock?
If you don't know the combination to a Master Lock combination lock, you have a few options. If your lock is attached to something, you can break the lock, call a locksmith or use a shim. However, these options could put a dent in your wallet. Sometimes, your cheapest option is to figure out the combination.
How to seal tumblers with epoxy?
If your lock has a key way on the back, you can drill a small hole next to it so that you can view the tumblers. After you align the tumblers , and determine the unlock code, you can seal the hole with a 2-part epoxy.
How to clear a lock?
Turn the dial at least three rotations clockwise first, just to make sure it is clear. Turn the lock's dial clockwise to zero.
How to crack a master lock?
To crack a Master Lock combination lock, download a lost combination form on the Master Lock website. Then, fill out the form and pay to have it notarized. Once you've completed the form, mail it to the Master Lock warehouse along with a photo of the lock and the lock's serial number.
How long does it take for Master Lock to process a lock?
Wait 4 to 6 weeks. Master Lock will process your request and send you your new combination.
How to find the serial number of a lock?
Photocopy your lock's serial number onto a piece of paper. The photocopy should show that your lock isn't attached to anything. Then, hand write the serial number beneath the picture of the lock.