Fuel tank
Welded from two halves stamped from steel sheet. To increase the corrosion resistance, the tank is lead-coated on both sides and painted with black enamel on the outside. The capacity of the fuel tank is 39 liters, including a reserve of 4-6.5 liters. The tank is installed in the luggage compartment on the right side on a rubber gasket and secured to the body with clamps tightened with a bolt. The filler neck of the tank is led into a niche in the right rear fender and closed with a blind screw plug. The tank is ventilated through a vent hose led to the filler hatch. The fuel in the hose loop prevents the gasoline from evaporating from the tank.
On cars VAZ-2105, VAZ-2107 and their modifications, fuel tanks 2101 are installed, on cars VAZ-2104, VAZ-21043 - fuel tanks 2102 with a capacity of 45 liters. Since 1985, drain plugs on fuel tanks have not been installed on all vehicles under consideration.
Fuel lines
Manufactured from galvanized or lead-coated steel tubes resistant to corrosion. The tubes are connected to each other, to the fuel tank receiving tube and to the fuel pump by rubber hoses in a fabric sheath and secured with tie-down clamps. The fuel pump is also connected to the carburetor with a rubber hose.
Fuel pump
A mechanically driven diaphragm pump is mounted on the left side of the cylinder block, fixed on two studs through a heat-insulating spacer and shims, equipped with a lever 1 (pic. 38) manual pumping of fuel. Pump productivity not less than 60 l/h at a frequency of swings of 2000 cycles per minute. The pressure developed by the pump, 0.20-0.30 kgf/cm2. On all the engines under consideration, a fuel pump from the 2101 engine is installed.
Pic. 38. Fuel pump:
1 - lever for manual fuel pumping; 2 - outer spacer; 3 - diaphragms; 4 - upper body; 5 - discharge pipe; 6 - top cover; 7 - plastic mesh filter; 8 - mechanical fuel supply lever; 9 - suction pipe; 10 - balancer; 11 - axis of the lever; 12 - lower case.
The fuel pump is driven by a pusher from the eccentric of the auxiliary drive shaft.
The pump consists of a lower housing 12 with drive levers, an upper housing 4 with valves and branch pipes, a diaphragm assembly and a pump cover 6. The diaphragm assembly is installed between the housings, has 3 diaphragms: the two upper ones are working for supplying fuel and the lower one is safety.
In the lower housing, on the axis 11, a lever 8 of mechanical fuel supply and a balancer 10 are installed. Also in the lower housing, on the axle with a cam, a lever 1 of manual fuel pumping into the carburetor is installed.
In the upper case 4 of the pump, textolite hexagonal suction and discharge valves are installed.