When repairing your car, motorcycle, household appliances, you have to unscrew a lot of fasteners, parts and other parts of a particular mechanism. In the process, you are faced with the problem of unscrewing and unscrewing rusted, stuck bolts with "licked" edges. What to do if one gets in your way? Do not give up, there are no unsolvable problems.
It is necessary
You will need: a metal brush, rags, a set of socket and spanner wrenches, a set of heads for the size of bolts, extension cords, a ratchet wrench, a lever for lengthening the wrench, a hammer, a liquid for soaking (for example kerosene), cobra pliers, pliers with double lever system, rubber band, metal file, impact screwdriver, reversible drill, set of drills (right and left sharpening), taps, extractors, welding, gas torch
Instructions
Step 1
First, assess the criticality of the situation, clean the bolt head and the part around it, if the bolt is tightened with a nut from the back, then also clean it. Take a special fluid (kerosene) and process the protruding part of the thread, as well as the places where the nut and bolt fit to the surfaces of the parts, wait a few minutes. You can pick up the keys, since it is easier to turn the nut, for it we use a ratchet wrench, but there are places where you can only crawl with an open-end wrench, it is better to use a spanner wrench to hold the bolt. If the bolt is screwed into the body of the part, then we twist it with a "ratchet". You can be congratulated, the nut has moved, the bolt has been unscrewed.
Step 2
But sometimes it happens that a bolt or a nut has stuck so much that it is simply impossible to move them with the keys, additional devices are needed here. The first in terms of ease of use is an additional lever, which we put on the opposite part of the key, increasing the lever, we reduced the effort required to unscrew the bolt. The lever is needed only in order to just rip the bolt out of place, then you can do without it.
Step 3
If leverage does not work, you will have to resort to more radical methods. For this we need a hammer. With a light tap we knock the bolt head around the perimeter, be careful not to "tighten" the edges of the bolt head, then the key will not be put on. If the hammer is of little use, we will use a gas burner. There are two ways: the first is to heat the bolt, the second is the part itself, ideally, when the bolt is heated, the part must be cooled, and when the part is heated, the bolt must be cooled, due to the temperature difference, the bolt should succumb.
Step 4
But this may not happen. Further development can follow two scenarios. The first - the head of the bolt is rolled up and the key has nothing to catch on, the second - the head of the bolt is broken off from the body of the bolt, but this is not a reason to fold your hands. In the first case, pliers with a double system of levers and cobra pliers will help you, the working surface of this tool is such that it perfectly holds rounded surfaces, and the force on the handles is sufficient to keep the pliers from slipping. To create extra force, wrap the rubber around the handles with pliers tightly. You can also saw down the head of the bolt for a screwdriver and, with the help of an impact screwdriver, rip the bolt out of place.
Step 5
Only heavy artillery can handle a shear-head bolt. If the bolt attracted one part to another, then try to separate them, if it succeeds, then by removing one part you will find in the other a protruding bolt body which you can quite comfortably grab with pliers. And if the body of the bolt is threaded, then two nuts can be screwed onto it and tightened together, and then use a wrench.
Step 6
But you probably have the worst possible option, the bolt is cut flush with the part, so you can't grab. The first thing you can do is weld a whole bolt to the bolt body and unscrew the rest with it. Did not work out. Pick up a drill and drill a hole in the bolt, cut the threads, screw in the bolt or extractor and unscrew the debris. The ideal way to remove the remnants of the bolt can be considered the following: a drill is selected slightly smaller than the diameter of the bolt, the bolt is drilled out, and the thread is restored with a tap.
