Tank fuel lines
Petrol engines: 1 - fuel supply line; 2 - outlet fuel line; 3 - gasoline filter
Diesel engines: 4 - fuel supply line; 5 - outlet fuel line
The heat-insulating casing of the fuel lines in the engine compartment and the designation of the fuel lines (vehicles with petrol engines)
1 - pipeline for gasoline vapors between the tank and the tank with activated carbon (not painted); 2 - return fuel line (Blue colour); 3 - fuel supply to the engine (black color); 4 - heat-insulating casing.
All fuel lines are made of polyamide tubes (material RA 12) and rubber hoses. Tube diameter 8/6.2 mm. The tubes are connected by two-piece quick couplings, also made of plastic. The ends of the couplings themselves are made either straight or at an angle.
The connection of the quick coupling is made only by pressing one part against the other. Disconnection is made by stretching them while simultaneously pressing the opposite protrusions of the plastic spring sticking out on the sides of the larger (black) coupling parts. The tubes are put on the fittings of the quick couplings after preheating and this connection cannot be disassembled without damage. If a rubber hose is put on the fitting of the quick coupling, the connection is provided by an elastic steel clamp. conclusions (fitting) from the fuel filter, fuel pump, etc. have tips for a nozzle and fastening of quick couplings.
All pipelines (tubes) pre-profiled and snap-fitted along the entire length into plastic clips that protect the tubes from touching other parts.
A gasoline filter is embedded in the pipeline connecting the outlet from the fuel tank to the gasoline engine. It is fastened with a clamp in the stamping on the side of the tank.
In the engine compartment, the fuel lines are brought out to the right side and protected there by a heat-insulating casing.
Conclusions are marked with colors (to facilitate orientation when installing pipelines from the engine). The fuel supply to the engine is indicated by black paint, blue indicates the outlet pipeline and the third, unpainted pipeline (for gasoline engines) connects to the pipeline leading to the activated carbon tank.