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How to Do Your Own Lock Repair You can fix your locks yourself or hire a professional locksmith when they become faulty. Repairing locks can be difficult and if you take the wrong route, it could cause more damage. The first step is to confirm that the problem is not caused by dirt or dust. This is usually resolved by applying a graphite spray or silicone based oil. 1. Door Handle or Knob Lock As time passes doors knobs and handles could become loose. This can lead to a jiggly knob or handle that is difficult for you to open. It is essential to fix loose door knobs since they are not only annoying but also can affect the security of your building. A loose doorknob is relatively easy to repair. There are several methods to fix it, dependent on the type of lock system your door is using. Some lock systems have easily accessible mounting screws, whereas others have backplates that conceal the screws. This is a more complicated method if your door uses an underlay that hides the screws. Most interior doorknobs are designed to slip over a cylindrical spindle that is inserted into the door as part of the latch assembly. If yours is not jiggly, it could be due to a tiny screw, known as a setscrew, located inside the knob, which prevents it from sliding across spindle. Utilize a flashlight to help you locate the screw and use an Allen wrench to tighten it. After it's tightened, try turning the knob to test if it no more appears to be as jiggly. If the knob is jiggly it could be because the set screw isn't placed correctly. To make sure the screw is properly positioned you should look for a small, matching button on the spindle. Move the knob over the spindle after pressing the button using the screwdriver with a flat head. The knob should click into position as you do this, indicating it is positioned correctly on the spindle. After you've confirmed that the set screw has been properly placed, tighten it once more to ensure that the knob is secured. If this does not solve the issue, you might have to remove the knob from the backplate and look for missing or loose screws. You'll need to replace the screws if this is the situation before you can install the knob or handle. If repairmywindowsanddoors.co.uk with this kind of repair, contact an experienced locksmith who can provide repair for damaged locks to assist. 2. The key won't turn in the lock There are a number of reasons why your key might stop turning in the lock. One of the most frequent causes is that the pins inside the cylinder have worn down. This means that they do not have a proper shape to allow the sliders or wafers to move by the key. In this case, a quick fix would be spraying the lock with graphite or lubricant based on silicone to coat the pins and make them to move once more. If the problem is more serious and the key is bent it may be necessary to get it straightened by an expert. A professional locksmith will employ an exclusive tool that has an angled edge that fits into the groove that runs along the edge of the key. This kind of tool isn't available in hardware stores, however you can find a kit that includes the proper tools online or at an establishment that sells locksmith tools. A dirty or contaminated lock is another possibility. Dust can build up over time in the lock's cylinder and cause the pins or springs to become stuck. In this situation spray the lock with WD-40 or graphite spray to clean out the pins, and then return them to their original positions. If the key itself has been damaged, it could also be a cause for concern. Keys are worn down over time by repeated use, which can cause the groves to wear down or even become smoother. This could result in the key not being able to fit into the cylinder. It is important to check regularly to ensure that the key is fitted correctly. In the colder months locks can freeze which can stop springs and pins from moving when the key is placed. This can be a frustrating problem, but it is usually relatively simple to fix by warming up the lock using hot water and then using the lubricant again to re-lubricate. If the lock is damaged beyond repair or has frozen the lock, it will have to be replaced. 3. The lock isn't turning It can be frustrating to have locks that don't turn or open. If this happens frequently it is advisable to think about calling a locksmith to inspect the lock to determine if they are able help. Fortunately, this isn't necessary since there are things that can be easily solved without professional assistance. Often the key won't rotate in a lock if it is damaged. This could happen if you have lost your key, or if it's damaged inside the lock. Instead of trying to pull the key out of the lock, which could cause it to be pushed deeper into the mechanism and cause it to get worse you can use needle-nosedpliers to take the key from the lock. You'll want to be careful not to break off any broken pieces with the pliers or you could cause damage to the lock. It's possible that your lock isn't aligned correctly which could cause the door to not latch properly. If you're lucky enough to have an extra key, this can be tested in the lock to confirm that it is working properly and doesn't cause the cause of the problem. If you do discover that the lock isn't aligned properly, tightening the screws around the strike plate will fix the problem and allow the lock to work normally. A lock might not rotate because of dirt or dust. This problem can be solved by using an lubricant made of silicone or graphite to cover the pins of the lock. This allows them to move up & down in a normal manner. You should avoid using oils-based products, such as WD-40, because they can cause more obstructions in the future. It's important to note that certain keys won't fit into all locks. If your key is one of these then it's time to purchase a replacement key from a local hardware store, so that it can be used in the lock. 4. The Cylinder Is Rotating When a cylinder is turned within a confinement gap it could result in hairpin vortices which can cause significant forces on the cylinder. The forces are proportional to the curvature radius that is dimensionless x and the confinement factor k. The simplified model described here predicts the effect of these parameters on the force and torque of a confined rotating cylinder. The tube, head and main body of the cylinder are constructed of aluminum alloy. If you're able insert your key in and turn it but the lock is still rotating, there may be an issue with the cylinder. Rekeying the lock can fix this problem. You can buy kits to do this online or in most big box stores.