In detail: do-it-yourself muffler pipe repair from a real master for the site my.housecope.com.
No matter how carefully we drive, over time our car wears out, all sorts of sores begin to appear. Some endure repairs, such as the stabilizer struts (knocking, of course, is unpleasant, but you can move around), but with some it is not very comfortable to ride, I would even say unbearable - such a breakdown can be attributed to a burnt-out muffler. He roars notoriously! So what to do - change? Or you can somehow repair it, and preferably with your own hands ...
THE CONTENT OF THE ARTICLE
It should be noted that a car muffler is a unit that is constantly exposed to aggressive environments. On the one hand, it is salt, water, snow and road stones. On the other hand, it is high temperature and substances from engine exhaust. In general, this link is struggling with two unfavorable environments, which sooner or later destroy it.
Made from durable metals, often steel or its alloys, which can withstand high temperatures. Did you know that near the catalyst, when driving fast, part of the muffler can simply glow red. It is not homogeneous, that is, it consists of several tribes, often only three.
1) These are the so-called pants, come from the engine
Often, the middle and rear parts, or rather their resonators (where the sound is muffled), suffer the most. There water collects and begins to oxidize the walls, then rust - that's why the muffler burns out.
There are two solutions to the issue, this is actually a replacement (preferably with an original, or a spare part close to the original), or try to repair this failed link. Usually it is simply removed and welded, previously they also used "cold welding", but its use is limited in time, after a thousand, and maybe several hundred kilometers, the sound will again appear.
Video (click to play).
In general, if they decide to repair it with their own hands, then it is advisable to weld the hole, then under normal circumstances, this part of the muffler passes several tens of thousands of kilometers.
If you nevertheless decide to repair, for example, there is no money for a new one, then follow my instructions:
1) Remove the burnt-out part. The process is not difficult, except for removing the pants (the part of the muffler that connects directly to the engine), there you have to tinker a little with the mount. It is also worth looking at the bolts, from time to time they can stick a lot, so it is advisable to use silicone lubricants that will help in dismantling.
2) After removal, we determine the essence of the problem, it may be a burned-out hole in the resonator! The pipes themselves, as a rule, rarely burn out. You also need to decide whether it is worth repairing this muffler link, often the walls that remain on the sides are also already thin, and if you weld on them, they will be the weak link.
3) It also happens that there are no holes on the surface, but the muffler still roars. Most likely, you replaced it with a similar one that fits your car, but made in a homemade way, the resonator is not correctly located in it. Repair here will be complicated, because you need to open the upper part, cut it off with a grinder, and then remake the resonator! BUT - you need to know how to position it correctly, which is also not unimportant, otherwise all the repair work will come to naught.
4) We return to the burned-out holes. Of course, many put them on cold welding, but as I wrote above, this is not for long, such repairs should be temporary, in order, say, to get to the desired destination.Some cover the hole with fiberglass using epoxy resin, if you properly prepare the place and apply according to the instructions, then such a repair can last a long time. As practice shows, several thousand, and maybe tens of thousands of kilometers. The big plus of such a repair is that you can do everything yourself. We watch a small video - instruction without welding.
VIDEO 5) We clean the places for welding, it is imperative that the contact is as strong as possible. Then a sheet of steel is taken and welded over the holes, thus, we restore the tightness of the resonator or pipe.
As you can see, the muffler can be repaired in various ways. Some are actually do-it-yourself - cold welding, fiberglass + epoxy. They are sold in almost every construction supermarket. Also, repairs can be more serious - welding, thus, you can extend the life of the unit for many more kilometers.
Repair video by welding.
That's all, before throwing out this part, see if it is possible to restore it. That's all, read our AUTOBLOG.
The exhaust system of a car performs very important functions to reduce the noise of the engine, reduce the temperature of gases escaping from the cylinders, as well as to partially eliminate the smoke and toxicity of exhaust gases.
The malfunction of the elements of such a system cannot be unnoticed. A muffler breakage is especially evident. When depressurizing, this element immediately loses the function for which it received its name.
Given this feature of the breakdown, it is necessary to restore the working capacity of this part as quickly as possible, otherwise increased attention on the road cannot be avoided not only from motorists moving in the stream, but also from traffic police officers.
The easiest way to rectify the situation is to install a new part, but due to various circumstances, replacing an inoperative muffler may not be possible. Fortunately, it is possible to repair the muffler with your own hands without welding and replacing.
This article will consider simple and effective ways to restore the performance of this element of the exhaust system of a car, but first, it should be recalled under what circumstances such a breakdown can occur.
It is easier to prevent a disease than to treat it later. The same is true for car breakdowns.
Of course, all the nuances on the road cannot be avoided. But knowing about the dangers that threaten the elements of the exhaust system of a car, you can try to delay the occurrence of one or another malfunction with preventive measures.
If the car is used constantly, then sooner or later problems with the muffler will arise, regardless of the quality of the material from which this part is made. Located in the lower part of the car, this part is constantly exposed to the abrasive effect of sand and stones falling on its surface. And if, when the car is moving, a sufficiently large solid object turns out to be between the wheels, then from a strong impact the muffler can be completely destroyed.
Therefore, the main rule of extending the life of the unit is to drive the car carefully.
The muffler is connected to the exhaust system by means of threaded connections, so if the nuts are not tightened well enough, this part can be lost while the vehicle is moving. To prevent this from happening, the condition of the threaded connections of this element of the exhaust system should be monitored from time to time.
The muffler often becomes unusable from burning out the metal, but this process cannot be completely stopped. Slightly slowing down the failure of this part as a result of thermal and corrosive effects is possible only when processing the inner surface of this part using graphite impregnation.
If, despite all the preventive measures taken, the muffler burned out or its body was damaged as a result of mechanical stress, then many owners immediately become interested in the question of how to connect the muffler pipes without welding.
You can carry out such repairs at home using a special sealing compound.
Cold welding is a two-part adhesive that can be used to glue metal products. Is it possible to weld a muffler with cold welding, because this part is affected by a very high temperature of the exhaust gases.
The adhesive composition of cold welding tolerates high loads and temperatures well, therefore, when a burnout appears in the muffler, or cracks from mechanical stress, it is necessary to remove the part from the car and perform the following actions:
Clean the damaged area thoroughly. Cleaning is carried out with coarse sandpaper or using attachments for a drill or grinder.
The metal, free from rust and carbon deposits, is thoroughly degreased with a solvent.
Cold welding is applied to the damaged area. Gloves should be used to apply the plastic type of glue.
After applying the composition, it is necessary to wait about an hour, and then polish the layer of hardened glue.
After a day, the part can be installed on the car and operated without any restrictions.
The muffler must be repaired by cold welding in a warm room. Only at temperatures above +5 degrees will the two-component composition of the glue react with the metal surface.
VIDEO
Ceramic tape is a popular and effective remedy for muffler repair.
A small hole in the muffler is closed in the following sequence:
The metal is cleaned of rust and carbon deposits.
The ceramic tape is wetted with water.
The hole is closed by repeatedly wrapping the muffler with ceramic tape.
This method is temporary, but during the entire service life of the "bandaged" muffler, its function will not be impaired, and in case of repeated burnout, you can easily wind a new layer of ceramic tape.
VIDEO
In the trade network you can find special high-temperature sealants for the exhaust system of a car.
Such funds in their composition have special cement or ceramic additives. Which, when exposed to high temperatures, freeze and form a layer that prevents exhaust gases from escaping from the damaged area of the vehicle's exhaust system.
The process of repairing a muffler with a sealant is usually carried out in the following sequence:
The damaged area is carefully cleaned with sandpaper.
The cleaned surface is slightly moistened.
The sealant is applied in a thin layer to the damaged area of the muffler and the part is cured for 30 minutes.
The muffler is installed in place.
For 10 - 15 minutes, the car engine is started to dry the crack sealed with a sealant.
After 10 - 12 hours, the car with the repaired unit can be used.
The use of a sealant for repairs can delay the purchase of a new part for a long time.
VIDEO Reviews about various means of repairing mufflers can be found on the Internet, but it can be very difficult to choose a tool that could be guaranteed to restore the working capacity of a part.
Car mechanics engaged in the repair of the exhaust system, if it is not possible to purchase a new muffler or repair the damage by welding. It is recommended to purchase an expensive ceramic sealant and use it to seal the hole.
To increase the reliability of the coating with a high-temperature sealant, on top of the applied composition, experts advise winding several layers of tin, which must then be securely fixed with a wide clamp.
With the correct execution of such repairs, the muffler will last a significant amount of time. And with the formation of new burnout points, it will be possible to repeat the above actions in a new place.
VIDEO
How to repair a muffler without welding is described in detail in this article. All of the listed methods of eliminating damage to this part are actually working, so the choice of method depends entirely on the owner of the car.
If you have free time and a desire to experience all the methods of eliminating such a breakdown, you can start repairing it with the help of cold welding. Which is inexpensive and you can buy such glue in any specialized online store.
Many car enthusiasts do not even think that a muffler is one of the parts of a car that works in the harshest conditions. Sometimes, it is very, very difficult to repair a burnt-out muffler.
The content of the article:
Reasons for failure
Purpose of the muffler
Repair methods
How to prolong life
Video
Before proceeding with the consideration of elimination methods, we will figure out why the muffler fails, because if you know the reasons, you can prevent several problems at once.
Where there is no asphalt, most often stones flying from under the wheels of a car hit the muffler. It is heated by exhaust gases to a temperature higher than the engine itself, because it does not have a separate cooling system. Of course, during the passage through the exhaust tract, the gases cool down, but not by that much.
Another point is condensation. In the cold season, this problem is especially acute, because the muffler is cold before the engine starts, and then it gradually heats up, albeit to a low temperature. The water that condenses on the inner walls does not evaporate, and every day it becomes more and more. And only in summer, in hot weather, this phenomenon passes.
Constant moisture leads to the fact that the "jar" begins to rust and rot, which, in turn, leads to cracks and holes. In addition, the exhaust system is suspended on rubber mounts to avoid vibrations, which leads to cracks in the welded seams.
All these factors do not contribute to the long life of a car muffler. First, small foci of corrosion appear, then cracks and holes, and finally, the muffler may simply cease to perform its functions, and simply "fall off" along the way.
When designing the engine and other parts of the future car, a huge number of factors and indicators are taken into account. The main functions of the muffler are to reduce the noise level from a running engine, to maintain the working pressure of gases in the system. It's not just that they called it a muffler.
In case of cracks in the muffler, firstly, a decrease in exhaust gas pressure, loss of engine power, the car will "drive worse" is possible. Of course, this applies to old cars that are not equipped with a catalyst. And secondly, the noise increases sharply, up to a level that does not allow the operation of the car. The exhaust, as they say, is a secret, and this is even worse than without a muffler at all.
Why is it worth repairing and not changing right away? In many modern cars, a muffler is a rather expensive part. In addition to cost, the obvious disadvantage of this path is the replacement time. The part is not often changed, which means that the likelihood of its availability in a warehouse, in a store or in a service is rather low. In most cases, the muffler does not fail entirely, but only requires the repair of individual parts.
In addition, it makes sense to repair the muffler because modern parts do not differ in quality. In most cases, the new one lasts at best for one and a half to two years.
So, there are several ways to repair a faulty muffler.If only a small hole or crack appears in the muffler, it is usually repaired using high temperature “cold welding” or sealant.
This method often does not even require removing the part from the car. In addition, such products are usually sold in many car dealerships, that is, you do not have to waste time looking. Such compositions are able to withstand temperatures up to 1000 degrees, while maintaining their properties. Of course, this is a temporary method, since the welding will still fly off from the vibrations.
If you notice the damage in time and fix it with a sealant or "cold welding", you can avoid costly repairs and not think about replacing the muffler for a long time. Also, this method allows you to do without a visit to the service center and carry out repairs on your own. The only thing that needs to be paid attention to is that the repairs must be carried out in a warm room, because at negative temperatures, sealants and "cold welding" lose their adhesion qualities and a good connection at the place of damage simply cannot be done.
If the crack in the muffler already has serious dimensions, or the corrosion has made significant holes, then the method of wrapping the damaged area with a bandage with special impregnations - ceramic or silicate - is used. Such funds are also able to withstand temperatures up to 1000 degrees, and in addition, due to the winding in several layers, they have good strength characteristics. But in no case should you use epoxy resin with fiberglass. The fact is that the resin will crack under the influence of temperature and simply fall off.
Simply put, in this way it is quite possible to repair a "burnt out" muffler even in the field. This method may require removing the entire muffler or parts of it. This repair method will not work if the junction of the pipe and resonator, or, as it is also called, "banks", is damaged. In this case, it is necessary to use electric welding.
In no case should you use an electrode welding machine, since even the most experienced and skilled specialist will not be able to weld metal even with a 2 mm electrode, the thickness of which does not even reach 1 mm. Semi-automatic wire welding only. Of course, you can use argon as well, but it's expensive.
For welding, most likely, it will be necessary to dismantle the entire muffler or separate parts if only replacement of some parts is required. The damaged part, as a rule, is cut off entirely with a grinder or other cutting tool. And instead of it, a new, similar part is installed using welding.
An important point is the correct selection of replacement parts, because the parameters of the muffler directly affect the operation of the engine. Joining the parts by welding allows you to maintain the tightness of the muffler and its strength. In addition, such a connection is less susceptible to vibration. For repairs by welding, it is recommended to contact the service or to qualified technicians with the appropriate equipment.
Can breakage be avoided? Unfortunately, the possibility of a muffler failure cannot be completely ruled out. At the same time, the implementation of scheduled inspections and current repairs can significantly extend the life of this part. If you notice that the car has begun to respond worse to the gas pedal, and when driving there are extraneous noises, we advise you to inspect the muffler and, if damaged, make repairs using one of the recommended methods.
VIDEO
Exhaust system device
The exhaust system consists of the following elements:
The exhaust system is designed to remove exhaust gases from the engine cylinders.
Exhaust manifold;
Oxygen sensors;
Catalytic converter (muffler catalyst ) or a particulate filter;
Exhaust pipeline;
Pipe with vibration-insulating coupling (corrugation);
Resonator or pre-muffler;
Main muffler;
Muffler suspension.
Almost all elements, except for the exhaust manifold and sensors, are made of stainless steel. The experience of operating a car shows that even such steel can rot under the influence of chemicals and temperature changes. The places of the welded seams are also susceptible to corrosion, because during the welding process, under the influence of high temperature, the parts to be welded are connected to each other with a fusible electrode, which does not carry protective properties, the temperature of the stainless steel changes and passes into another state of aggregation: austenite or ferrite, which is allowed it is good for it to oxidize with air and rust. Impact loads that appear from road irregularities have a negative effect. Often, mechanical damage appears on the muffler and resonator, which reduces the flow area, and this slows down the rate of exhaust gas removal, that is, the cylinders are poorly cleaned, and this leads to a loss of engine power, a decrease in efficiency and an increase in fuel consumption. You can often find a simply burnt out muffler. This happens when the fuel mixture does not completely burn out in the engine cylinder, but burns out in the exhaust system. All malfunctions of the exhaust system can be quickly eliminated and on their own.
Car muffler device
The exhaust gases pass first through the resonator, where their speed and noise level are reduced.
Exhaust gases travel through the exhaust system under high pressure, and their movement is accompanied by a sound wave that travels faster than gases. The muffler consists of pipes of various diameters not connected to each other, and a steel mesh and sound-absorbing material are installed in the muffler body. Mostly fiberglass is used as such a material.
The muffler corrugation is designed to reduce vibration loads on welded seams and suspension system elements. However, such an element is exposed to high temperatures and mechanical damage. The corrugation is a small elastic element, which is covered with a metal protective mesh and installed in the exhaust pipe. The corrugation is not repaired, but is completely changed, especially since the price of the muffler corrugation is low. But if there is no welding machine at hand or it is impossible to get to a car service, then it can still be repaired. The most common phenomenon in which a muffler corrugation is repaired is a violation of the integrity of the weld. In case of repairing the corrugation with your own hands, you need to purchase a repair kit for the exhaust system or cold welding, fiberglass and epoxy resin. A "tourniquet" can be applied in the seam area, but it is worth remembering that this operation is temporary, so it would be most optimal to buy a new corrugation and weld it into place.
It is necessary to clean the right place on the weld with coarse sandpaper;
Degrease the repair area;
Prepare the composition for repair according to the instructions on the package;
Apply the mixture liberally to the weld seam and allow to dry.
Saturate the fiberglass with epoxy and screw it tightly in the diameter of the weld;
Over the fiberglass, coat with cold welding another layer in a circle and let cool.
In this way, the weld seam rupture can be temporarily repaired. Often, when repairing a muffler, the corrugation is also replaced.
Replacing rubber hangers for a car muffler
Rubber suspensions are easy to change - you need a little oil and a long screwdriver.
This system is a set of rubber cuffs that are installed between the body and the metal muffler. They wear out mainly from impacts, and rubber is also susceptible to aging from high temperatures. The number of such elements is calculated during the design of the exhaust system, therefore, one torn fastening elastic will lead to the breakage of the rest. They are easy to change, and for this you need a little engine oil and a long screwdriver. Oil is needed to lubricate the hinges with a screwdriver to remove the rubber mounts, and then install new muffler hangers.
The muffler pipe is welded to the corrugation on one side, and on the other side it is connected through a clamp to the resonator tube. It changes in case of burnout or shock. To replace it, it is necessary to cut off the corrugation with a grinder at the place of the weld seam and remove the clamp. Usually it is very strongly "welded" with the resonator receiving tube, so it must be knocked out through the spacer with a hammer. Next, install a new downpipe and weld on the corrugation.
This element most often burns out. Holes are formed on its body through which the exhaust gases come out very noisily. The resonator changes in aggregate, because its cost is not very high. However, if a quick repair is needed, you can use the replacement method using cold welding, epoxy resin and fiberglass. In this case, it is necessary to apply a tourniquet impregnated with epoxy resin over the layer of cold welding, and then coat the entire fiberglass with another layer of welding. It must be remembered that such an operation is temporary.
Car muffler repair without welding
Cracks that form at the weld can be sealed with muffler sealant.
Clamp on the pipe of the muffler of the car
The resonator outlet pipe and the silencer inlet pipe will be connected in two ways:
Through the tie with a clamp;
Through the flange.
The most cost-effective way to repair a muffler can be the use of cold welding.
In the first case, the diameter of the resonator hole is larger than that of the muffler. They are joined to each other and tightened with a clamp. In the case of a flanged connection, the pipe diameters are the same, therefore it is necessary to install a heat-resistant gasket between the connection of the muffler to the resonator. rust formation , it is possible to cover its body with heat-resistant spray paint for the muffler before the beginning of the winter season, which will serve as an obstacle for salts and aggressive environmental factors. This material should be used before the beginning of each winter. Also, when repairing, it is necessary to replace the muffler ring.
VIDEO
The exhaust system is a rather complex design, which includes several components. The most voluminous and creating the greatest number of problems, as practice shows, is the muffler.The malfunction of this element of the exhaust system is always heard from afar, and in the most literal sense: the muffler got its name for a reason.
The resulting malfunctions of the exhaust system are quite natural: each structural element is subjected to severe loads, which sooner or later lead to the manifestation of a malfunction. The muffler is no exception - on the contrary, it absorbs all the exhaust gases from the engine.
Muffler malfunctions can be of several types:
mechanical damage (obtained, for example, as a result of a strong blow);
corrosive destruction;
burnout of the muffler walls;
separation of individual structural elements.
It is necessary to understand that it is quite difficult to deliberately damage the muffler - after all, it was originally designed for high loads, and this element has corresponding resistance to damage. A muffler malfunction usually occurs for the following reasons:
mechanical impact (as a result of a strong blow or during prolonged driving on rough terrain);
exposure to exhaust gases at a sufficiently high temperature;
the influence of moisture;
the effect of corrosion due to the appearance of condensation in the internal cavities of the muffler;
sudden temperature changes and excessive vibration (as a result, a destructive effect on welded seams is produced);
the presence of factory defects.
Any of these causes can lead to muffler malfunctions, down to through holes. The damaged part will immediately make itself felt with a characteristic roar, so you will have to troubleshoot in the very near future.
If the problem was only in the creepy sound, then some time with the repair could wait, but a damaged muffler significantly reduces the efficiency of the engine and increases fuel consumption ... That is why a good owner will try to fix the problem immediately after its detection, without waiting for the accompanying negative effects to appear.
With some skill, you can independently carry out work to eliminate problems in the muffler quickly enough if you follow a clear sequence of actions. The repair can be conditionally divided into several stages:
Dismantling the muffler.
Visual inspection and identification of the problem.
Directly repair work.
Re-assembly of the muffler.
There should not be any complications during the work, and the elimination of problems is carried out in one of the ways described below.
Recently, the method of cold welding has become increasingly popular, which makes it possible to quickly and efficiently patch any hole. Cold welding is a versatile compound that cures very quickly and has excellent resistance to oil, gasoline and other corrosive substances.
Cold welding comes in two forms:
Liquid. To create a high-quality patch, a liquid mixture is used: it becomes a shell and fastening material for reinforcing elements. The result is a reliable connection to the part.
Plastic. Such a composition, in addition to the high quality of the connection, is distinguished by excellent adhesion, which allows repairs to be carried out on poorly prepared surfaces.
For a high-quality repair of a muffler using cold welding, the following operation algorithm must be observed:
First, the damaged area is sanded to create a flat surface on which it will be easier for the material to anchor.
Further, the cleaned area must be degreased. Gasoline or alcohol is well suited for these purposes.
After preparing the site, you need to take the required amount of adhesive and bring it into working condition according to the attached instructions.
The finished mixture is applied to the damaged area and leveled. The work must be done as quickly as possible: the sealants begin to dry out within a few minutes after application.
The final stage is drying.The finished part must be left for a while to allow the glue to dry completely.
When it comes to repairing a muffler without welding, then various options for bands and patches that can be fixed with fasteners immediately come to mind.
One of the methods of restoring the muffler's performance looks like this. For repair, a special fiberglass bandage is taken, which is applied over the damaged area. This material is designed to work in high temperature conditions, so you can forget about the problem for a while. In addition to bandages and cold welding, regular metal patches can also be used. Reliable clamps are suitable for fixing them, firmly pressing the patch to the muffler.
However, regardless of the do-it-yourself muffler used for repairing the muffler without welding, you need to understand that such a solution will be temporary. And the sealant, and the bandage, and even the patch securely fastened with clamps - all these materials can eliminate only the problem, but not its cause.
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The reason is the damage to the integral part, which cannot be restored to its original state even when using a welding machine. If serious burnouts or holes in the muffler are found, the best course of action would be to replace it. .
Sometimes it is simply impossible to solve the problem on your own and without the use of welding. For example, if the muffler bank is damaged, it is quite possible to use all the described means to create a temporary patch, but if the exhaust pipe burns out from the muffler, then it will be almost impossible to fix such a malfunction with your own hands.
In addition, the need to replace or repair a muffler rarely arises spontaneously - usually there are prerequisites for this. To prevent them, you need competent prevention: the use of suitable fuel, a balanced driving regime and timely car maintenance.
VIDEO
Repairing the muffler without welding is quite possible and can be done by hand without any problems. There are several ways to fix the problem, and they are not expensive or difficult to learn. At the same time, it is important to understand that any repair will only delay the inevitable replacement of the muffler - no patches will be able to return it to its original performance.
Many drivers, if the exhaust system of the car is damaged, do not make repairs, but completely change this unit. Almost always, this approach leads to new problems - you will have to buy a new part every 3-4 years! There is a less costly and more reliable way - use muffler cement. With its help, it will be possible, without much difficulty and with our own hands, to repair mechanical damage to the tank or resonator.
This part of your car works under heavy loads:
temperature up to 1300 ° С;
constant contact with an aggressive gas environment;
vibrations and vibrations;
mechanical damage from impacts.
If the exhaust is damaged, the following symptoms appear.
Loud roar , which comes from under the bottom or rear of the car while driving. This means that cracks have appeared in the parts, the corrugation no longer ensures tightness, the gaskets are worn out, and the fasteners are torn.Metal clang from under the hood or rear bumper when driving. This sign means that the integrity of the resonator or the reactive muffler has been violated.Knock from under the bottom ... Indicates worn muffler mounts.This material is used if it is necessary to restore the integrity of the exhaust system, to seal a groove in a rolling or welding seam. The paste is resistant to high temperatures - it only becomes harder from heat.
The sealant is used in the following cases.
For the installation of components of a new exhaust system.It is applied to the inner annular surfaces of all parts to be joined. It is also possible to seal joints with cement.
To eliminate the consequences of burnouts. A patch is applied to the damaged area with a layer of cement, which is then screwed on with self-tapping screws. The paste is also applied over the fasteners to increase the tightness.
To restore any parts of the exhaust system. The surface with cracks or holes is cleaned, after which the substance is applied to it. If there is major damage, patches are used.
In some cases, damage can be repaired by welding or seams, but cement is much more reliable.
Important! The sealant can only be used if the hole is relatively small and the damaged part remains rigid. If there are large cracks, it is better to take a thermal tape. Remember that damage to the connection between the tank and the pipe cannot be repaired by applying adhesives - you need to completely change the parts.
When the first signs of a breakdown appear, carry out a diagnosis, ideally in an inspection pit. Start the engine to more accurately determine the location of the fault. Examine the size of the damage, stop the engine and remove the muffler.
If you need to repair a crack or burnout in the connecting pipe, remove rust and dirt with a grinder with a brush, degrease the damaged area and apply a thick layer of cement to it.
In the event of a major burnout, you will need a pad. You can make it yourself, from sheet metal about 0.6 mm thick. The size of the overlay should be such that it overlaps not only the damaged area, but also some area around it. The area intended for sealing must be lubricated with a sealant for repairing the muffler, install a cover on it and fix it with clamps. Wait for the cement to harden (the time is indicated in the instructions) and apply over heat-resistant paint.
Muffler repair using Abro cement, video:
VIDEO To repair the front or rear muffler top cowl, you will also need 0.5-0.6 mm sheet metal and muffler cement. An outer casing must be made of metal, then a layer of paste must be applied to the surface of the muffler, the casing must be fixed with bolts and pads.
Install the part in place and start the engine - it should run for some time at idle (the exact date is in the instructions for the cement). After a few days, inspect the muffler and, if there are small cracks, cover them with paste and paint with heat-resistant paint after hardening.
Benefits of Abro Cement
Products of the American brand, widely distributed all over the world. Differs in affordable cost and positive reviews from motorists. The sealant is universal - it can be used not only to restore the integrity of machine parts, but also in everyday life, as an adhesive with high retention capacity. The substance helps to reduce the noise level during the operation of the system.
Abro products have the following advantages.
Resistant to high temperatures. The paste does not lose its properties when heated to 1100 degrees, so it can be used in new exhaust systems.Ease of use. A minimum of preliminary work - you only need to clean and degrease the surface to be treated, after which a layer of cement is applied to it.High setting speed. If you start the engine at idle speed, the sealant will harden after 20 minutes. Without heating, it hardens for about 12 hours.Profitability ... The substance is cheaper than a number of analogues, and one tube is enough for 3 overhauls and one replacement of the gasket. You don't have to spend a lot of money.With the help of Abro cement, you can quickly and easily repair the muffler or its individual parts. The shelf life of the sealant is not limited.
Jam repair with your own hands (video):
Video (click to play).
VIDEO
