A plastic tank is a convenient reservoir for water, which ensures the preservation of liquid parameters for a long time. It does not collapse from moisture and is not prone to rust, but can be deformed under the influence of external factors. How to seal a plastic water tank? The choice of method depends on the nature of the damage and the type of polymer.
Causes of deformation and nuances of repair
One of the causes of damage to plastic water tanks is improper installation. Uneven ground and the presence of sharp objects can lead to changes in the geometry of the tanks, the appearance of cracks and leaks. Deformation can also be caused by mechanical influences, including shocks during operation.Before sealing a plastic water tank, you need to know the composition of the material that was used to make it. Depending on the feedstock, the following types of polymers are distinguished:
- Polyethylene (PE-HD). It is characterized by a combination of hardness and ductility, which simplifies the processing of plastic. Low pressure polyethylene is resistant to various organic and inorganic media and retains its parameters at temperatures from -50..+80 °C.
- Polypropylene (PP-H). Differs in the increased hardness, tensile strength and chemical resistance.
- Polyvinyl chloride (PVC-U). Withstands temperatures in the range from 0…+60 °C, as well as exposure to oxidizing media and chemically aggressive substances. In addition, it has high strength and hardness.
Troubleshooting Options
Restoring the integrity of polyethylene containers is complicated by the low coefficient of adhesion of the material, due to which the surface rejects epoxy, cold welding compound, adhesives and sealants.- From small crack can be removed by sealing it with waterproofing bituminous tape.
- Another option is to repair the damage with a patch made from a piece of plastic and special modeling glue. The main thing is to thoroughly clean and degrease the surface.
How to seal a plastic water tank made of polypropylene
You can use patches made of fiberglass, which is fixed with a molten polymer. To do this, the surface of the container at the site of damage is cleaned and heated with a building hair dryer.Then liquid plastic is poured from the gun and a piece of fiberglass of the desired size is applied.
To ensure a strong fixation, the repaired area of the tank is again heated with a hairdryer.
When choosing a method for the restoration of polymer containers, one should take into account the water pressure during their operation. It has a significant effect on the deformed site and can increase the size of the damage.
Restoration of tanks by welding
One of the effective ways to eliminate deformations of plastic tanks is welding. Its action is based on the ability of materials to change from a solid to a viscous state under the influence of high temperatures.To repair plastic tanks, there should be no water in them.
The container is freed from liquid, and the damaged area is cleaned and degreased. Then perform the following operations:
- heat up the plastic in the deformed area, melting it to a certain depth; fill the crack with a heated tourniquet or a piece of polymer;
- cool and clean the resulting seam from excess plastic.
Tools and fixtures
In everyday life, the repair of plastic water tanks made of various types of plastic is carried out using a soldering iron and a hair dryer. When buying these tools, you need to consider the following criteria:- Power. For a soldering iron, it should be at least 100 W, and for a hair dryer - 1600 W.
- maximum heating temperature.
It is advisable to give preference to soldering irons with a wooden handle, because due to the high temperature, the polymer can quickly melt.
The hair dryer should have several nozzles and a smooth temperature control system that will allow you to set the desired mode when working with different types of plastic.
When performing welding, you will also need a polymer rod designed to reinforce the crack. Its quantity and diameter are selected depending on the size of the deformed area.
More significant damage is eliminated by welding patches from a piece of plastic of suitable composition.
However, the owners of the corresponding containers are spared their characteristic shortcomings. These disadvantages include a certain fragility of the material.
Under the influence of a wide variety of external factors, careless impacts, the impact of sharp or heavy objects, as well as when certain heavy objects fall directly into an open tank, when a hydrodynamic shock is created, such tanks can be damaged.
Damage can be either very small and pointy, such as from a prick with a sharp object, or extensive, which appear in large cracks that can break structures almost in half.
Such a spectacle is extremely deplorable and especially unpleasant when it comes to the largest reservoirs, since their price is not so small. However, it is not necessary to discard the entire structure when such a problem occurs.
There are opportunities for efficient and convenient restoration of tanks with a full return to their original functionality.
Material Features
Many are accustomed to the fact that they consisted of an extremely slippery and glue-resistant material. It is called polyethylene, however, when repairing, it is necessary to clarify as accurately as possible the specific material from which the corresponding container is made.
In fact, containers can be made from three types of plastics. First of all, of course, it is worth talking about polyethylene. This material perfectly combines hardness and ductility, which greatly simplifies the procedure for its processing.
Low pressure polyethylene retains its functions and characteristics well in the range from -50 to plus 80 degrees Celsius.
Tanks of increased hardness, which is felt even when touched, are most likely made of polypropylene. It is extremely tear-resistant and has high rigidity.
Polyvinyl chloride structures are not operated at temperatures below zero and above 60 degrees Celsius.
In addition, such blocks tolerate contact with chemically aggressive environments well at sufficiently high levels of hardness and strength. Usually information about the material is indicated directly on the tank itself.
On the basis of knowledge regarding the material, the very principle of restoration of a specific container is chosen, there are a number of specialized technologies by which restoration is carried out.
Of course, first of all we will touch on polyethylene containers, which are the most widespread.
Many are accustomed to the indispensability of plastic adhesives and epoxy compounds. However, in the case of polyethylene, they are completely useless.
Small cracks and damage can be repaired with bituminous waterproofing tapes. Another possibility for gluing polyethylene tanks is the use of BF-2 and BF-4 glue.
This substance has the ability to dissolve external structures and ensure its adhesion to materials. Of course, in this case, it will be necessary to clean all the relevant areas as carefully and efficiently as possible, as well as prepare patches from plastic pieces.
In this case, surface preparation, degreasing and ensuring maximum adherence are key to effective adhesive performance.
Polypropylene plastic tanks can be repaired by taking fiberglass patches and pouring molten polymer from them with an appropriate glue gun.
In this case, cleaning is also required, and in addition, additional heating of the damaged area with a building hair dryer. Always take into account the pressure of the water itself from the inside, calculate the required amount of patch and the required adhesive material for a secure fit.
Welding is an extremely effective method that excels in all kinds of plastics.
Considering that materials are freely capable of passing from a solid to a viscous state, it is quite possible to try to melt the plastic to a certain depth, and then simply fill the damaged area with the same heated plastic or specialized bundles to a certain depth.
Of course, in this case, extremely thorough cleaning of the surface is also necessary. In addition, it is desirable to completely empty all tanks on which restoration work is carried out.
Is it even possible to seal a container or gas tank made of plastic?
How to solder a plastic container? In our time, there are many invented methods for welding cracks, holes, burst seams, equipment for such repairs is also diverse from a soldering iron to a hair dryer, whoever is much better. It can be repaired with such tools, but where is the guarantee that it will not leak again. Such repairs will be just decorative and in the future the owner will incur new costs. It takes knowledge of the material and practice. Our craftsmen use professional equipment from a well-known Swiss company and give a guarantee for the repaired tank, reservoir, tank, gas tank made of plastic.
Plastic containers are made mainly from materials such as polyethylene and polypropylene, it is almost impossible to glue anything to these materials due to their chemical characteristics, and trying to seal a container from these materials is a waste of time. With large volumes of plastic containers from 2 cubes, this type of repair will not help at all, in this case only welding with special equipment will ensure the sealing of the container!
How to seal a plastic tank
How to seal a plastic tank? Usually the problem is solved with a plastic container repair kit, but remember that if you want to use this method for a long time, such a repair will not help you. All capacitive products in 95% of cases are made of two materials - polypropylene (PP) and polyethylene (PE), which in turn have very low adhesion, that is, they are very resistant to chemical attack. Almost no glue is glued to them, and more than one patch with glue will not provide a quality repair, professional repair by welding is necessary!
How to seal a plastic gas tank?
How to seal a plastic gas tank is a serious matter, not every car service has specialists who can restore a plastic fuel tank, and also give a sealing guarantee! You can repair it yourself, for this again you need equipment and a simple building hair dryer is unlikely to save here, where will they give you a guarantee for your repair? Our workshop both repairs and gives a guarantee for the repair of the fuel tank, specialists go to the place of repair, if necessary, by agreement.
Repair of plastic tanks can be divided into 2 types: extrusion and bar (soldering with a hot air gun). Other repair methods are not effective (glue, sealant, foam, etc.).
Soldering gasoline and diesel tanks (gas tank) has its own characteristics. The gas tank from special equipment must be removed from the car before repair. Some gas tanks can be repaired directly on the car, it depends on the nature of the damage and the location of the fuel leak.
Polymer water tanks do not require special preparation during restoration, they must be drained, the damage site must be protected from liquid ingress and cleaned of mud deposits (if any).
Extrusion is performed using specialized equipment. Loaded products are repaired using this method (gas tanks of tractors, trucks and cars, tanks with a volume of more than 0.5 cubic meters and tanks operating under pressure). Products after welding do not lose their operational and strength properties - the service life after repair is unlimited.
hot air welding(with the help of a hot air gun and a plastic additive) is a less effective method, usually it is used for welding lightly loaded plastic parts. The service life after soldering is from 1 month (depending on the load). This method, in view of the overheating of the repaired area, is not as durable as extrusion, but its undoubted advantage is its lower cost.
Professional restoration of a plastic tank is carried out as soon as possible, if necessary, with the departure of a specialist welder to the place of work. Water tanks, fuel tanks, plastic expansion tanks, vertical tanks, storage tanks, large volume plastic tanks, as well as containers for reagents and other chemical compositions are subject to restoration.
Most modern cars, tractors, construction equipment are equipped with plastic fuel tanks, which for a number of reasons break through, crack and break. The cost of gas tanks is quite high, plus the order and delivery of the product can take a long time, the price of work allows you to avoid high costs and restore a damaged gas tank with minimal losses. Soldering fuel tanks takes about an hour of your time. An example of welding a fuel tank is the repair of the gas tank of the JCB excavator, shown in the first photo, the tank was pierced by iron fittings, after restoration, the properties and shape of the gas tank remained the same, the equipment runs smoothly.
To weld a gas tank (fuel tank), the customer must provide certain conditions - the tank must be drained, dried from fuel (open the neck and other outlets for several hours, keep it open during transportation for the release of gasoline or diesel fuel vapors). We solder gas tanks of trucks and cars, snowmobiles, tractors, trucks, buses, truck cranes and other special equipment.
Self-restoration of polyethylene fuel tanks is impossible if you are looking for something to seal a plastic container with - do not try, there is simply no glue for polyethylene and polypropylene, and manufacturers claiming that glue or sealant can seal a crack in these materials are cunning. Polyethylene or polypropylene are repaired only by welding, if a guarantee and tightness of fuel tanks is needed, then it can be achieved exclusively by extrusion welding. There are no special conditions for soldering a plastic water tank, it must be dry. Wondering - how to seal a plastic tank? - do not hurry! Polyethylene and polypropylene containers do not stick together due to a number of their properties, sealants, glue and epoxy resins will not help you in solving this problem, and deterioration of the surface quality due to unprofessional repairs can increase the cost of subsequent work on restoring the product (see photo 3).
A plastic fuel tank is repaired by welding polymers using a welding extruder. Modern plastic containers are made from high quality polymer raw materials. Welding technology makes it possible to repair containers and gas tanks made from almost all types of raw materials. Polyethylene is usually used as the basis for polymer containers, it is known for its resistance to fuel and chemicals, as well as to shock and external loads. Polyethylene packaging is distinguished by its durability in use, storage of food products and drinking water in polymer containers is safe for the human body, this is due to the fact that polyethylene does not emit toxic substances and practically does not decompose. Due to the unique chemical and mechanical properties of polyethylene and polypropylene, many manufacturers of agricultural, construction and special equipment have adopted polymer capacitive equipment for re-equipment to replace obsolete metal ones.
Many are concerned about one important question, how to solder a gas tank? Various car breakdowns can catch the driver at any time and most likely you will not even expect it. One of the most serious problems is the breakdown of the gas tank. It needs to be solved very urgently, and at least partially.
In fact, fixing a gas tank is not so difficult for a person who understands at least a little about mechanics and held a blowtorch in his hands. If you are unfamiliar with how your car works, you will have to learn, because the problem is really very serious. Many people ask the question: "How to solder the gas tank yourself?". First you need to know where it is. Often it is located in the right corner of the rear sector of the car.
Due to this placement, the gas tank can ensure the safety of the driver and passengers. Find it and examine it carefully.
Your task is to understand what is the cause of the breakdown and where is the hole that needs to be soldered. After all, it is the lower part of the car that most often suffers from physical impact. But here the driving style can also serve as a breakdown factor, if you drive carefully, then most likely this problem will bypass you. The only thing you should expect it from is corrosion and rust. Time will take its toll, especially on domestic cars.
Fast work
How to solder a gas tank if an accident happened on the highway? First, drain all the fuel that is inside. You will need a jack to tilt the car, and then you can drain the fuel using a tube. But even after that, do not start work, you need to wait until the gas tank is completely dry, otherwise it may ignite.
Further, assess the damage to the gas tank and locate the breakage. Your task is to carefully remove it for repair. When the part is removed from the car body, it is necessary to determine whether there are additional holes in the gas tank. The process is quite delicate, so it is better not to rush here. It is necessary to carefully detach the gas tank from the car and carefully inspect it. Only after that you can start working.
Exceptions
There are several types of critical breakdowns of the gas tank, but often they are solved in a simple way. If the breakdown occurred while driving, and you are on the highway, then it is better to install patches on the gas tank first. This can only be done with a wrench..
Using improvised tools, it is necessary to expand the hole of the hole so that a bolt can be inserted into it. Then put a washer on it with an elastic band or a dense gasket, and then insert this design into the neck.
Also, from the outside of the gas tank, it is necessary to install a special cuff with a washer, which will simply be tightened with a regular nut. This design will help you get to the car service, where specialists will already carry out the main work.
A simple solution
In some situations, you can fix a hole in a gas tank with good glue or any equivalent. With not very serious damage, this method will be most relevant. All you need is a good piece of cloth that needs to be moistened with glue and applied to the damaged area.
When you see that the fabric is firmly stuck to the place of damage, treat it with nitro paint, this temporary repair will allow you to easily get to to the nearest car service.
After these tips, you most likely will no longer ask: "How to solder a gas tank?". Now you can independently carry out repairs at any time and protect yourself from even greater damage to the gas tank.
Is it even possible to seal a container or gas tank made of plastic?
How to solder a plastic container? In our time, there are many invented methods for welding cracks, holes, burst seams, equipment for such repairs is also diverse from a soldering iron to a hair dryer, whoever is much better. It can be repaired with such tools, but where is the guarantee that it will not leak again. Such repairs will be just decorative and in the future the owner will incur new costs. It takes knowledge of the material and practice. Our craftsmen use professional equipment from a well-known Swiss company and give a guarantee for the repaired tank, reservoir, tank, gas tank made of plastic.
Plastic containers are made mainly from materials such as polyethylene and polypropylene, it is almost impossible to glue anything to these materials due to their chemical characteristics, and trying to seal a container from these materials is a waste of time.
With large volumes of plastic containers from 2 cubes, this type of repair will not help at all, in this case only welding with special equipment will ensure the sealing of the container!
How to seal a plastic tank
How to seal a plastic tank?
Usually the problem is solved with a plastic container repair kit, but remember that if you want to use this method for a long time, such a repair will not help you. All capacitive products in 95% of cases are made of two materials - polypropylene (PP) and polyethylene (PE), which in turn have very low adhesion, that is, they are very resistant to chemical attack. Almost no glue is glued to them, and more than one patch with glue will not provide a quality repair, professional repair by welding is necessary!
How to seal a plastic gas tank?
How to seal a plastic gas tank is a serious question, not every car service has specialists who can restore a plastic fuel tank, and also give a guarantee for sealing! You can repair it yourself, for this again you need equipment and a simple building hair dryer is unlikely to save here, where will they give you a guarantee for your repair? Our workshop both repairs and gives a guarantee for the repair of the fuel tank, specialists go to the place of repair, if necessary, by agreement.
Repair of a gas tank of any type without a trip to the service station
A car breakdown is a fairly common occurrence that can catch a driver in the most unforeseen situation. The failure of the gas tank is a serious problem that needs to be at least partially eliminated at the site of the accident. This will allow transporting the car to the nearest service center, where it will be possible to carry out a major inspection and repair. Do-it-yourself gas tank repair is not too difficult for people with some knowledge of such repairs.
The location of the gas tank is the lower right corner of the rear sector of the vehicle. This is due to ensuring safety for the driver and passengers, as well as the formation of the correct center of gravity in the car, which makes it possible to improve its handling. However, the lower section most often suffers from constant physical impact, which leads to repeated damage to all mechanisms located here. The fuel tank is no exception.
Crack in car gas tank
Causes of damage to the gas tank and the basics of repair
The breakdown of gas tanks is most often associated with the gradual development of corrosion processes. Their impact on the inside of the fuel tank is especially dangerous. The provoking factor for the appearance of rust is water. It is almost impossible to avoid getting into the tank.
Also, the cause of holes in the gas tank can be a malfunction in the vehicle's power system. A discharged pressure is formed inside the tank, which provokes the formation of an emergency load on all walls of the fuel tank. After some time, it becomes covered with small mechanical cracks.
Rules for repairing a gas tank of any type:
- Before starting the procedure, it is required to drain all available fuel from the gas tank. With the help of a jack, the car is installed in an inclined position. Gasoline is drained through pipes. Next, the gas tank should be thoroughly dried.
- Determine the degree of need for complete removal of the fuel tank for repair work. It is recommended to take into account the area of damage and the degree of convenience in carrying out repairs.
- Determine the feasibility of conducting a full monitoring of the tank for the presence of additional holes.
Gas tank removed for subsequent repair
Methods for repairing a fuel storage tank
There are several ways to troubleshoot. Most of them are applicable in extreme conditions, which will avoid spending additional funds on calling a tow truck.
Installing the patch with a wrench and rubber gasket. First you need to use improvised means to expand the punch hole of the tank to a size corresponding to the bolt. A washer with a rubber gasket is put on its narrow part. Then the whole structure is inserted into the hole through the neck. From the outside, a cuff with a washer is installed and tightened with a nut.
The rubber must be petrol resistant. Not every driver has such material stored in the car.
How to repair a gas tank yourself: detailed instructions with video
As a replacement, a camera from any truck is suitable. Such a patch is considered quite durable. With proper installation, contacting the service station can be delayed. This method is often used by truckers who spend most of their time on the road. A good patch can last more than five years.
Use to eliminate damage to the glue "Moment" or any of its analogues. The method is relevant for not very serious injuries. To create a patch, you need a piece of dense, but pliable fabric moistened with glue. It needs to be firmly pressed to the site of damage and held for a while. After the main gluing, the patch should be treated with nitro paint from the repair kit. This is a temporary measure that allows you to get to the nearest service station.
On - repair of a gas tank hole:
Temporary replacement of the gas tank for any bottle. The method is suitable for breakdown of the fuel capacity of carburetor-type cars. Plastic or any other container is filled with gasoline, a hose is immersed in it, going from the gasoline pump to the fuel tank. The container should be securely fastened so that it does not turn over and does not lead to negative consequences. This method will easily help the driver to get out of a difficult situation.
Eliminate damage with laundry soap. The method is considered effective only for superficial problems.
Sealing the area of the crack with epoxy glue and fiberglass. The place of gluing must be thoroughly cleaned and dried, gasoline drained. Clean the work area with sandpaper, degrease and dry again. A piece of fiberglass must be glued to the damage site. After complete drying, stick another one of the same patch. The number of layers must be at least three. When gluing the last layer, a plasticizer should be used, which can be aluminum powder.
Repair of plastic gas tanks and metal gas tanks by cold welding. The most versatile way to deal with holes. Damage is removed with epoxy. The first stage of work is grouting the surface with sandpaper. Then, in a separate bowl, epoxy resin is mixed with a hardener until a homogeneous mass is obtained. If heating is required, the container can be placed on the engine. When performing this method, a fabric patch is also used. Saturate it liberally with the resulting mixture and apply to the hole in the fuel tank. Let dry well. This patch is very strong and can last quite a long time.
The result of repairing a gas tank by cold welding
Soldering as a type of gas tank repair of any type
This method of eliminating the hole is the most stable. Suitable for both metal and plastic fuel tanks. Knowing how to solder a gas tank, you can extend its service life for a long time without buying a new unit in a car shop.
Repair of a plastic gas tank is carried out using a soldering iron, the power of which is 250 watts.
The procedure itself is reminiscent of soldering a plastic bumper. Soldering is done from the outside. It is necessary to control the tightness and strength of the structure. If additional donor plastic is used, its type must match the original representative. The marking of the plastic composition is usually present on each part. It can be polypropylene (PP), acrylonitrile butadiene styrene (ABS) or polyamide (PA). Fine-pitch metal or copper mesh is used as a reinforcing material. The desired piece of it is applied to the cleaned surface and, using a heated soldering iron, is fused deep into the plastic. The remaining plastic on the surface of the mesh is gently smeared, creating a surface layer. The entire operation must be carried out at one time, otherwise it will not be possible to avoid the influx of multiple layers of plastic.
Only a soldering iron with a power of 500 watts is suitable for repairing a metal gas tank. The most ordinary iron can help warm up the body of the gas tank. If necessary, a thin copper sheet can be used for the patch. The solder must be soft. The patch is soldered along the entire perimeter, which contributes to the tightness and reliability of fastening. Before soldering, the work area is treated with soldering acid. This is necessary for the reliability of the connection of solder and metal. From above, the applied patch is covered with bituminous mastic, which is particularly resistant to corrosion.
The result of repairing a gas tank by soldering
How to restore the gas tank cap
You can pay attention to a malfunction of the gas tank cap if, when it is opened, there is a noise effect associated with air being sucked into the tank.
Repair of the gas tank cap is often associated with malfunctions of the plastic leash. You can replace it with ties that fasten the wires. To work, you need three clamps. Insert one of them into the lug of the fuel tank cap and tighten a tight loop. Already connect the second clamp to it. Make a small hole in the hinge of the gas tank hatch, to which tie the loop knot. The second end of the clamp located on the gas tank cap will be tied to it.
Knowledge of the features of the repair of the fuel tank for the driver is extremely useful. Understanding repair issues, not a single motorist will be taken by surprise, even far from civilization.
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How to seal an aluminum tank
What methods are effective and how to seal the gas tank for the possibility of its further operation? These issues will be discussed in this section. After all, this topic is more about used cars, and even then domestic production. Structurally, gas tanks are practically not protected from external damage, unlike foreign analogues. Often, small fractions of gravel, crushed stone, asphalt, bouncing off the rear wheels, gradually destroy the paint and primer shell, causing irreparable damage to the metal. After some time, the metal begins to rust. The driver begins to notice a fuel leak. How to seal the gas tank? Today there are two options for gluing:
Each method is good in its own way. Of course, you can find other ways to fix leaks in the gas tank, but they are less effective than the above. Tools and related equipment
- Half a liter of acetone;
- Epoxy resin;
- Fiberglass.
First, we purchase all of the above materials, carefully read the terms of the instructions for use. Troubleshooting algorithm
- Degrease the surface of the gas tank with acetone.
This procedure must be carried out several times, since the quality of gluing the gas tank material depends on how well the degreasing will be carried out;
Preparation stage and epoxy bonding For bonding, it is necessary to use an adhesive of a viscous consistency, otherwise the effect may not be achieved.
- We cut the patches of fiberglass so that they protrude 1-2 cm more than the perimeter of the crack or other damage. Scraps of fabric are thoroughly impregnated in epoxy;
Each subsequent layer should be slightly wider than the previous one and with an interval of 15-20 minutes. In addition, we impregnate the last layer with additional aluminum powder, which can be purchased at a car dealership. After a day, the structure will completely dry and harden. You can process it with fine sanding paper. We proceed to painting or priming, depending on the need. Cold welding is used similarly to the above processes. Despite advanced technology in the form of welding, many drivers prefer the old tried and true methods. So, the question of how to seal the gas tank has already been sorted out. You can carry out a similar procedure both in garage conditions and at a car service, depending on your decision.
The causes of damage to fuel tanks can be different, in one case rust, in the other a normal trip on Russian roads. A small blow and almost immediately we begin to smell gasoline in the cabin. The fuel level arrow also tells us that gasoline is leaking. And how difficult is it to repair the fuel tank yourself? If the gas tank is leaking, then driving with such a breakdown is not safe, so do not put off repairing it for a long time. Before starting work, it is recommended that you familiarize yourself with:
General rules for repairing a gas tank
- To drain the gasoline from the fuel tank, you will need to tilt the car with a jack to one side and use the tube. If the hole in the gas tank is at the bottom of it, then it will be faster to drain the gas through it. Then you should dry the gas tank from gasoline vapors.
- Repair of a gas tank without removal or better to dismantle it, they decide depending on the accessibility to the place of damage and the type of repair work.
Folk way to repair a gas tank
Do you know how our grandfathers used to repair the fuel tank in the field? If a small crack appeared in the fuel tank, the hole was rounded with a screwdriver. Next, we selected a bolt of a suitable size for this hole and twisted it, first we put rubber washers on it (from the wheel chamber).
If you look at the old 130th ZILs, you can see that their tanks are completely bolted, which indicates that this method is quite reliable and durable. Currently, this method finds its favor with truckers, but we will analyze the most popular and affordable way to repair a gas tank further:
Gas tank repair by cold welding
This method is currently the most popular section of motorists. It is based on a material called "cold welding", which can be found in any household store. The meaning of this tool is that when mixing the two components, the resulting plasticine-like mixture hardens in 10-30 minutes, which is ideal for patches. If the damaged surface is first cleaned of dirt and dried, then the repair by cold welding will be quite durable, and it is unlikely Do you ever come back to this damage. However, if you try to fix a hole in the gas tank without first preparing, then this treatment will be temporary. 
Repair of a gas tank by soldering
For this method, you will need a soldering flux (fat, rosin) and a hammer soldering iron (200W). We clean and degrease the space around the damage site, and thoroughly rinse the tank itself with water.
We process with 20% phosphoric acid and solder two galvanized patches (flux-hydrochloric acid with zinc, solder pos-40). The landing surfaces of the patch and the tank should be cleaned and tinned.
Do-it-yourself gas tank repair
Such a repair of a punctured gas tank can be called reliable, but the disadvantage is the mandatory dismantling of the tank.
Fiberglass and epoxy gas tank repair
Another way to fix a gas tank leak. In this case, fiberglass and epoxy will act as a patch. Similarly, we clean the surface, and then apply a layer of fiberglass, which we impregnate with resin. After drying, apply the second layer in the same way. The final step will be anticorrosive treatment. Gas tank repaired in 4 hours! 
In the field, instead of epoxy and fiberglass, Moment glue and any material (rag, rags) are used. The layers are alternately impregnated and superimposed on the site of damage. Such a temporary solution allows you to easily reach the nearest service station.
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How to glue a plastic tank
| snim (Moscow) Feb 9 2004 08:32:33 |
A tank burst from a material very similar to that from which washer tanks are made for cars (white fragile plastic). How to repair a fuel tank. Do-it-yourself gas tank repairCrack 10-12mm. |
| Anton (moscow, russia) Feb 9 2004 12:02:33 |
It's most likely polyethylene or something similar. The only solvent is a soldering iron. |
| Destroyer (Moscow) Feb 9 2004 13:44:46 |
Correctly: You need a heat gun and a hair dryer. We expand the crack to 2mm, the edges are chamfered. We apply a smooth metal plate from the outside, heat the tank around the crack with a hair dryer - so that it does not drip yet, but is already hot, from the inside we fill it with a thermal gun from the inside. Cool down, cut off the excess. We insert the plate from the inside, heat it with a hairdryer from the outside, Fill it with a thermal gun from the outside. Rods for a thermal gun of different colors, with different properties, explain to the seller where this tank is used, pick it up. |
| Alex21 (Volzhsky, Volgograd region) Feb 9 2004 15:48:32 |
This plastic tank is utter rubbish ... Plastic gets old from time to time (your thorn is most likely the first sign), as a result, it can immediately burst over its entire height with pouring the contents onto the floor. This is exactly what happened to a friend - she was good at home, she heard the whistle of water from the valve. |
| snim (Moscow) Feb 9 2004 19:56:00 |
2Destroyer: It won’t work from the inside 🙁 The throat at the tank is 5 cm in diameter. > Even simpler, without a thermal gun: We turn a plastic bag (which is thin, without a pattern) into a thin, tight tube, light it, drops begin to fall from it. Wow, I'll try this now. But it will stink... > Generally elementary: buy a new tank No, not easier, it is specific, from a sprayer. I watered them with wallpaper, primed the walls ... Hello, Alexander!!! :-) > Utter rubbish this plastic tank... Maybe yes. > Plastic ages over time... No, it’s new, it’s not even a month old yet, but it burst, an infection. I think I hit him with something. |
| Serg (Samara, Russia) Feb 10 2004 02:33:43 |
2snim: Buy a stick of hot melt adhesive and use a soldering iron or just a hot nail (like a spatula) to cover the crack with it. Only, initially, it is necessary to degrease the surfaces of the crack - it can be done with acetone. Best regards, Sergei |
| snim (Moscow) Feb 11 2004 |
Thanks everyone for the advice. Gluing was done with a heat gun. Only here is the nuance: there were 2 rods - one transparent, the other matte. The first did not stick together, the second patched tightly! With respect, Nicholai. |
| Voka (Tomsk) Feb 12 2004 07:46:45 |
Late of course, but ... It is desirable to drill the ends of such cracks. To not spread further. |
How to seal a gas tank? 2 time-tested ways
What methods are effective and how to seal the gas tank for the possibility of its further operation? These issues will be discussed in this section. After all, this topic is more about used cars, and even then domestic production.
Structurally, gas tanks are practically not protected from external damage, unlike foreign analogues. Often, small fractions of gravel, crushed stone, asphalt, bouncing off the rear wheels, gradually destroy the paint and primer shell, causing irreparable damage to the metal. After some time, the metal begins to rust. The driver begins to notice a fuel leak.
How to seal a gas tank? Today There are two adhesive options:
- Using cold welding to seal cracks and holes;
- Epoxy glue or popularly called fiberglass. It is better to buy a two-component.
Each method is good in its own way. Of course, you can find other ways to fix leaks in the gas tank, but they are less effective than the above.
Tools and related equipment
- Several sheets of sanding paper;
- Half a liter of acetone;
- Epoxy resin;
- Fiberglass.
First, we purchase all of the above materials, carefully read the terms of the instructions for use.
Troubleshooting algorithm
- We drive the car into a viewing hole or overpass;
- We outline the place of leakage with chalk;
- We dismantle the fuel tank from the car;
- Pour out the remains of gasoline or diesel fuel;
- We dry it in the open air necessarily, since the vapors of the chemical reagent are explosive;
- Using a rag and a soapy solution, we externally clean the gas tank from tar residues, dirt, and other impurities;
- To clean hard-to-remove chemical compounds, we use coarse sandpaper;
- Degrease the surface of the gas tank with acetone. This procedure must be carried out several times, since the quality of gluing the gas tank material depends on how well the degreasing will be carried out;
Preparation stage and epoxy bonding
For gluing, it is necessary to use glue of a viscous consistency, otherwise the effect may not be achieved.
- Cut pieces of fiberglass so that they protruded 1-2 cm. larger than the perimeter of a crack or other damage. Scraps of fabric are thoroughly impregnated in epoxy;
- Carefully apply fiberglass to the surface of the gas tank so that there are no air bubbles left, otherwise eliminate the shortcomings;
- Using a rag, remove excess glue and resin;
- Smoothes the glass strip with a small piece of plastic to flatten the platform;
- After that, we proceed to the imposition of the second ball, we carry out a similar procedure. Depending on the degree of damage to the gas tank, it is determined with the number of fiberglass balls. Accordingly, minimal damage will require a minimum number of fiberglass balls, deeper damage zones will require a larger number of balls.
Note to the driver, it must be remembered that the quality of the rest of the structure depends on how the first layer is laid.
Each subsequent layer should be slightly wider than the previous one and with an interval of 15-20 minutes.
In addition, we impregnate the last layer with additional aluminum powder, which can be purchased at a car dealership.
After a day, the structure will completely dry and harden. You can process it with fine sanding paper.
We proceed to painting or priming, depending on the need.
Cold welding is used similarly to the above processes. Despite advanced technology in the form of welding, many drivers prefer the old tried and true methods. So, the question of how to seal the gas tank has already been sorted out. You can carry out a similar procedure both in garage conditions and at a car service, depending on your decision.