Advice 1: How to solder a gas tank

Leaky gas tank? Often, if you have the car of foreign production, replacement quickly find it is very difficult. Uniformity, as a rule, cars are not allowed. Needs repair, at least temporary. How to solder a gas tank?
How to solder a gas tank
Instruction
1
First of all, you need to acquire the necessary tools and materials. First, you need a powerful soldering iron. Electrical – minimum of 100-watts. Even better use a soldering iron heated over an open fire. He has a large mass and keeps the required temperature. These soldering irons are now a rarity, but if you have any mass the piece of copper, attach to it a handle of wire, you can make yourself a temporary soldering iron.
2
The second need is solder, for example, a standard tin. And the so-called flux. Fluxes are the materials which are used for binding the oxides during soldering and welding of metals. Instead of the traditional rosin is better to use etched with hydrochloric acid – zinc chloride (ZnCl2). To zinc chloride can own. To do this, dip in a bottle with a diluted 1:1 hydrochloric acid 3-4 "pills" of zinc or more, until they cease to dissolve. In this form, zinc is supplied in the school chemistry lab. You can also use the pieces of shell used batteries. To do the described operation preferably in the fresh air. As flux use borax, pre-procalis that it is not foamed when soldering.
3
Preparatory work play a major and significant role. Tank, of course, must be empty, washed and dried. The leak thoroughly protected with sandpaper and degrease. From the accuracy and precision of the action will directly depend on the quality of your work. It is desirable that the tank should be removed, especially if the repair area down in the bottom. As a rule, as is often the case. Heat the soldering iron and Ludim. If there is not sufficient skill to efficiently solder the fuel tank, seek the help of a skilled neighbor.
Note
The use of welding requires a special approach and training. Not enough vaporized fuel tank can explode.
Useful advice
Looking for a replacement for the leaky fuel tank. If you already the process has begun, it will continue, and the next, probably, have already appeared in other microscale.

Another piece of advice. If a leak in the tank showed in the way – use the "cold welding", the stock which is always useful to carry. You can also temporarily save the situation by means of ordinary soap.

Advice 2: How to seal gas tank

A leak formed in the fuel tank of the vehicle, it is possible to seal with fiberglass and epoxy glue. The reliability of splices is much higher than when using cold welding for bonding.
How to seal gas tank
You will need
  • epoxy resin;
  • - fiberglass;
  • - acetone;
  • - sanding paper.
Instruction
1
Purchase the necessary materials to perform the work. With this epoxy adhesive two-component prefer domestic. When choosing, consider the advice of the seller and the instructions on the package.
2
Find the location of the leak on the tank. If it is located in an inaccessible place, remove the tank, carefully dry it. The place of gluing sand grinding paper with rough surface (to improve adhesion). Degrease the surface with acetone. The quality of degreasing depends on the quality of bonding!
3
According to the instructions on the package, prepare the epoxy and pour it into a suitable container. If you have to do the gluing on the corners and sides of the tank, give it a thicker consistency. Cut the fiberglass pieces so that their edges protrude from the cracks a few centimeters. Saturate the fiberglass with epoxy glue.
4
Start to stick, applying fiberglass to the repair surface so that no bubbles. The excess resin is removed. To improve the impregnation utrambovyvaya pasted layer fiberglass face hard brushes. Pay special attention to the first layer from its quality will depend largely on the quality of all work performed. Before applying on the first layer subsequent, lightly treat it rough sandpaper.
5
Seal the leak with several layers of fiberglass. Each successive layer should extend beyond the previous 1-2 cm After laying of the next layer wait 15-20 minutes for drying the adhesive. Apply each layer neatly and quickly. The last layer of fiberglass soaked in epoxy resin with added plasticizer (aluminazirconia powder). To do this in a separate container mix the plasticizer and the resin to a mushy consistency. Thoroughly dry the resulting patch during the day.
6
If you want, on top of superimposed patches swipe the putty and painting of the tank. This will improve the reliability of bonding. Before applying putty and enamel surface patch, handle rough sandpaper.
Useful advice
Epoxy resin is toxic. Make sure that the workplace is well ventilated. Use protective gloves.

Advice 3: How to brew the gas tank

In some place of the car or installed the gas tank, there's always a risk of damage. If it is underneath, it can be damaged from shock or even thrown out from under the wheels of a stone. If the tank is installed in the Luggage compartment, it can be damaged by corrosion processes that occur during condensation. In any case, the tank will need to brew.
How to brew the gas tank
You will need
  • - tool to remove and install the gas tank;
  • - air compressor;
  • - gas burner;
  • - anti-corrosion composition.
Instruction
1
Drain excess fuel then remove the gas tank with mounts. Visually determine the location of damage. If it is not obvious or there is a suspicion that the tank was leaking in several places, identify any damage. To do this, cut a rubber tip which firmly closes the neck of the gas tank. Make the hole the tube of the compressor. Stop the hole from which fuel is supplied to the engine. Apply the compressed air and determine the place of diversion, place notes on them.
2
Rinse tank to the left fuel vapor that can detonate when welding. To do this several times to completely fill it with water and drain it. Last time you fill the tank with water completely and set it so that in the place where you will be welding, there was an air gap. To the neck of the tank, attach the hose and lift it above the level of the tankand, through him, could get heated gas.
3
Brew damage the tankand using a gas burner. When performing work, be sure to pay attention to not burn the metal. After applying the seam give Baku to cool. Then fill it with compressed air and submerge in water. If the tank does not leave air bubbles, repairing is over. Otherwise, repeat the procedure again, brewed a pot in the place where out the bubbles of compressed air.
4
Let the tankhave to dry completely. After that blow it with compressed air, so that it remains as little as possible water and steam. If necessary, the feeding air under pressure, straighten the dents in the gas tankE. Produce anti-corrosion treatment tank with a special compound and allow it to dry completely. Install tank in place. Add fuel and make sure again that the leak is fixed. If there is no electric fuel pump, pump fuel mechanical pump until it gets to the carb.
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