Fuel tank Pajero 4/3- an important element of the fuel system of the car, which serves to store fuel. The presence or absence of leaks and vapors of gasoline or diesel fuel depends on the state of the fuel tank.
Typically, in passenger cars, this part is located outside the area of possible deformation of the body during an accident. It is fastened with straps. For some damage, either the tank needs to be repaired or replaced.
Fuel tanks are made of metal, but plastic (high-density polyethylene) tanks are now very common.
Among the advantages of such tanks, it can be noted that they can be made in almost any shape, which means that they can fill the empty space under the bottom of the car as much as possible. In addition, plastic is not subject to corrosion. However, cracks may appear on the plastic from impact with stones.
For the manufacture of metal tanks, a stamped sheet of steel or aluminum is used.
The owner of a Mitsubishi Pajero 4 approached us with possible damage to the fuel tank. The symptoms were small puddles of gasoline that were found after the car was parked. After inspecting the car on a lift, it was decided to replace the fuel tank.
A design feature of this Pajero is that there is a small gap between the tank and its protective cover. Over time, sand, dirt and other contaminants are packed into it, which, together with moisture and chemicals, cause corrosion processes. This leads to rotting of the fuel lines. Such a "disease" is inherent in almost all Mitsubishi Pajero of this series.
The best solution to this problem is to replace the tank with the original tank and properly maintain it afterwards. Also, with this breakdown, the fuel intake and neck often become unusable, which should also be replaced so that in the future there will be no problems with the fuel system again.
Filling the tanks with fuel is carried out separately in order to fill the tanks completely: first, the main tank is filled (during refueling, fuel is also partially poured into the additional tank), then the additional tank is filled. Fuel is consumed from both tanks in approximately the same way, the tanks work as communicating vessels.
Installation requirements:
- Main tank cover ( without valve, access atm. there is no air in the tank through it)
- Additional tank cover ( with valve, access atm. air into the tanks is carried through it)
- Fuel receiver of the main tank (shut off the connection of the tank with the atmosphere, "Air" tube).
Addition: on Scania vehicles (according to theory), an additional tank is consumed first due to discharge, and then the main fuel tank.
System advantages:
Easy to install this wiring diagram. It is not required to purchase a fuel intake for an additional tank. There are no additional connections to the fuel system of the car - accordingly, there is no possibility of its airing. Simplicity and reliability of the system.
System disadvantages:
At very low temperatures, there is a possibility of fuel freezing in the banjo bolts and overflow hose, which will make it impossible for fuel to flow from tank to tank and to balance the pressure in the main tank with atmospheric pressure. If the main tank closes as tightly as possible, and the pressure in it cannot equalize with atmospheric pressure, the tank will be squeezed externally. The tank will shrink inward. With a large number of compression and expansion cycles, the main tank may crack. To avoid this, when the hose freezes, simply open the air to the tank: open the tank’s connection with the atmosphere through the fuel receiver (“Air” tube) or by installing the cover from the additional tank ( with valve, access atm. air into the tanks is carried through it).
Filling the tanks with fuel is carried out separately in order to fill the tanks completely: first, the main tank is filled (during refueling, fuel is also partially poured into the additional tank), then the additional tank is filled. Fuel is consumed from both tanks in approximately the same way, the tanks work as communicating vessels.
Installation requirements:
- Main tank cover ( without valve, access atm. there is no air in the tank through it)
- Additional tank cover ( with valve, access atm. air into the tanks is carried through it)
- Fuel receiver of the main tank (shut off the connection of the tank with the atmosphere, "Air" tube).
Addition: on Scania vehicles (according to theory), an additional tank is consumed first due to discharge, and then the main fuel tank.
System advantages:
Easy to install this wiring diagram. It is not required to purchase a fuel intake for an additional tank. There are no additional connections to the fuel system of the car - accordingly, there is no possibility of its airing. Simplicity and reliability of the system.
System disadvantages:
At very low temperatures, there is a possibility of fuel freezing in the banjo bolts and overflow hose, which will make it impossible for fuel to flow from tank to tank and to balance the pressure in the main tank with atmospheric pressure. If the main tank closes as tightly as possible, and the pressure in it cannot equalize with atmospheric pressure, the tank will be squeezed externally. The tank will shrink inward. With a large number of compression and expansion cycles, the main tank may crack. To avoid this, when the hose freezes, simply open the air to the tank: open the tank’s connection with the atmosphere through the fuel receiver (“Air” tube) or by installing the cover from the additional tank ( with valve, access atm. air into the tanks is carried through it).
Vendor code: TAD107
Cars: Mitsubishi Pajero NM, NS, NT, NW, NX
Packed weight: 35.1 kg
Packed dimensions: 1650 x 735 x 385 mm
Installation time: 2 hours
Specification:
The long-awaited ARB Frontier fuel tank for the Mitsubishi Pajero SUV is ready for release. Its capacity is 128 liters, which is 40 liters more than the original tank.
The TAD107 fuel tank is a complete replacement for the original factory tank. Unlike other fuel tanks, the TAD107 does not affect the overhang angle as it evenly distributes the mass of additional fuel.
This fuel tank is the first in the ARB Frontier range to be designed for monocoque bodywork, so there are a few things to consider. This is due to ARB's specially designed fuel tank baffle system, which prevents fuel from rapidly flowing from one tank cavity to another. Mounting brackets and fasteners are supplied with the fuel tank for easy and quick installation.
The tank is made of reliable and impact-resistant polymer material; it is indispensable for drivers of Mitsubishi Pajero cars who are set up for a comfortable journey.
Key features:
- the tank is made of impact-resistant "cross-linked" polymer material;
- fuel pump developed by ARB;
- partition system ARB;
- one-piece construction;
- does not affect the change in ground clearance;
- easy and quick to install;
- not subject to corrosion;
- suitable for cars with monocoque body structure;
- each tank is individually tested;
- comes with fixings;
- made in Australia.
The TAD107 fuel tank is equipped with an ARB-designed fuel pump and fuel delivery module. The module plate is made of 10mm thick galvanized steel, provides excellent sealing and is compatible with the original module.
The system of partitions built into the fuel tank significantly reduces the rate of fuel flow in the tank, making the driving process as comfortable as possible for the driver and passengers.
The model of the Japanese SUV Mitsubishi Pajero is considered to be one of the most functional, unpretentious in use and reliable vehicles that have won the sympathy of millions of drivers around the world. However, this car has several standard "sores", one of which is the frequent failure of the fuel tank. Directly about the features of the repair of the Mitsubishi Pajero gas tank and will be discussed.
As a rule, the list of the main causes of gas tank leaks on the Japanese SUV in question includes:
- dirt sticking to containers;
- frequent off-road trips;
- untimely check of the technical condition.
Initially, it should be noted that the developers of Mitsubishi Pajero placed the fuel tank too close to the ground clearance, equipping it with additional plastic protection. Such a measure, as conceived by the creators of the SUV, was to effectively protect the iron container from mechanical damage, as well as extend its service life.
However, in practice, everything turned out differently: dust, dirt, salt deposits began to accumulate in the gap between the plastic casing and the gas tank, causing rapid corrosion of the metal. As a result, the fuel tank leaks even in cars whose service life does not exceed 2-3 years.
Some Mitsubishi Pajero owners use their SUV for cross-country or off-road trips, often hitting various obstacles with the bottom. Tuning a car, in this case, will help to modernize it with benefit.
Plastic protection in critical cases not only does not save the gas tank from deformation, but also hides traces of serious blows. As a result, microcracks can form, through which fuel begins to seep in small quantities. At the same time, the owner of the car may not notice such a breakdown until the leak becomes global.
After 5-6 years of operation of Japanese Mitsubishi SUVs, experienced specialists recommend checking the technical condition of the fuel tank at least once a year.
For this you need:
- drive a car into a pit;
- remove protection;
- assess the appearance of the tank.
If serious deformations, cracks or signs of corrosion are found, it is best to promptly replace this element.
Advice. You should not cover problem areas with sealing compounds in the hope of a long service life of the gas tank, otherwise it can fail at the most inopportune moment, for example, on a deserted highway far from service stations.
All known modifications of fuel tanks
Immediately before replacing the gas tank, it is necessary to select a similar container that will be identical in volume to the original. The following table shows the main characteristics of fuel tanks for Mitsubishi Pajero.
As can be seen from the table, the volume of the Pajero tank of the latest modifications has significantly decreased. Of course, this does not apply, on which the manufacturer again began to install large fuel tanks.
The reduction in the volume of the gas tank is primarily due to a decrease in fuel consumption and an increase in environmental safety standards. The cars of the brand under consideration have become less “gluttonous”, while the amount of carbon dioxide produced during the operation of the engine has decreased several times.
The unique video in this article shows what dirt builds up in the tank.
Preparing to remove the gas tank
Before proceeding with the dismantling of the fuel tank, a number of preparatory measures should be performed, in particular:
- drain the fuel;
- remove the rear left wheel;
- remove the protective cover;
- unscrew the supply hoses;
- Disconnect the fuel pump connector pins and sensors.
It will be extremely difficult to qualitatively change even a half-full fuel tank, therefore, immediately before removal, you can “roll out” the gas tank to almost zero or drain the fuel into a previously prepared container. In the first case, after the warning signal on the dashboard lights up (the so-called "gas station" icon), you can drive about 50-70 km, after which a maximum of a couple of liters of fuel will remain in the tank.
At the same time, experienced repairmen do not advise doing this, since small suspended particles often accumulate at the bottom of the gas tank, which can quickly clog the fuel filter. The same is said in the instructions. It is best to carefully unscrew the 12 drain bolt located at the bottom of the tank and drain all gasoline (or diesel fuel).
Note. If all the manipulations to replace the fuel tank are planned to be carried out on a lift, then the wheel can not be removed, since it will not interfere.
After removing the plastic protection, we sequentially loosen the clamp on the drain hose, as well as the filler neck hose. We carry out a similar procedure on the fuel vapor control hoses and fuel return. Do not forget to also disconnect the high pressure hose from the fuel filter.
At the final stage, it is necessary to disconnect the electrical contacts of the fuel pump connector and the current fuel level sensor. The first chip is located at the top of the tank, and the second is on the right side of the tank (on the passenger side of the car). After making sure that all of the above activities are performed correctly, we proceed to the main part of the replacement.
Removal and repair of the gas tank
The dismantling of the fuel tank on the Mitsubishi Pajero is carried out by unscrewing the four nuts that fix the tank directly to the car frame brackets.
Very often, these elements are subject to corrosion, so they are pre-moistened with a WD40 type compound, which allows you to unscrew all fasteners without any extra effort.
In the case of replacing the old gas tank with a new analogue, all the described procedures are performed in the reverse order, while during the installation process all clamps must be carefully tightened in order to eliminate the possibility of leaks in the future.
If you decide to save your own financial resources and repair the fuel tank, then it does not hurt to listen to the useful advice of experts:
- For any type of repair of a gas tank on a Mitsubishi Pajero (painting, repairing cracks, removing dents), it is imperative to change the neck gasket through which fuel passes when pouring into the tank;
- It would not be superfluous to additionally replace the gasket of the fuel pump assembly with the fuel level sensor located on it, which, for various reasons, often fails.
To remove the mentioned element, it is necessary to pre-treat with the WD40 composition all the nuts that, during the operation of the vehicle, probably stuck to the landing studs. Next, we take out the old gasket, install a suitable analogue in its place, tighten the fixing nuts and check the tightness of the gas tank.
Crack repair and painting
Recall that if cracks are found on the Mitsubishi Pajero fuel tank, it is categorically not recommended to reinstall it on the vehicle even after a thorough repair. If you nevertheless decide to eliminate leaks in the metal with your own hands, then this can be done either by soldering, or by covering problem areas with cold welding. First, do not forget to degrease and dry the surface, after which you can proceed with the repair.
The gas tank is painted only after it has been cleaned of the old coating, for which fine-grained sandpaper is ideal. If corrosion was detected on the container during paint removal, such places are treated with a rust converter, which slows down the destruction of the metal.
Advice. Painting is best done with acrylic enamels, which have good resistance to aggressive acid-base environments. Before installation, the fuel tank is dried, checking for leaks.
Thus, the repair of a gas tank on a Mitsubishi Pajero car is a very responsible event that requires a thoughtful approach, the availability of appropriate knowledge, skills and suitable equipment. The price of a Pajero fuel tank is approximately 50 thousand rubles.
