Toyota PAB4-Toyota RAV4
1. Operation of the car
2. Maintenance
3. Engines
4. Cooling systems and conditioning
5. Fuel system and system of production of the fulfilled gases
   General information
   Technical characteristics of system of injection of fuel
   Dropping pressure in fuel system
   General check of fuel system
      Check of the fuel pump
      Check of fuel tubes, hoses and their connections
   Fuel pump
   Fuel pressure regulator
   Fuel level sensor
   Fuel tank
   Case of the air filter
   Accelerator cable
   Electronic system of injection of fuel
   Damper of pulsations of fuel on models since 2001
   Distributive fuel highway and nozzles
   System of production of the fulfilled gases
6. System of ignition
7. The control system and decrease in toxicity of the fulfilled gases
8. Coupling
9. Transmission
10. Driveshaft and shaft of the drive of driving wheels
11. Brake system
12. Suspension bracket
13. Steering and running gear
14. Body
15. Electric equipment
Schemes of electric equipment


Toyota RAV4>> Fuel system and system of production of the fulfilled gases>> General check of fuel system>> Check of fuel tubes, hoses and their connections
Carry out check of fuel tubes, hoses and their connections as follows.
Dump pressure in fuel system.
Metal fuel tubes are laid under the bottom of the car and fixed by clips and screws self-tapping screws. Periodically examine them on lack of leaks and damages.
If when replacing the fuel filter in it and fuel pipelines there is a dirt, surely disconnect pipelines and blow them compressed air. Also check a condition of the mesh filter on the block of the fuel pump.
Never use copper or aluminum tubes instead of the steel tubes established on the car as they can not sustain vibrations at operation of the car.
As fuel tubes are under high pressure, they demand special service.
Some fuel tubes have threaded connections with sealing rings which need to be unscrewed before service or replacement of components. In such connections conical nuts which when tightening a nut, in addition press out connection are used. Check sealing rings for lack of cracks and damages and if necessary replace. If replacement of steel tubes is made, establish only original tubes.
Flexible fuel hoses have to settle down at distance not less than 100 mm from elements of system of production of the fulfilled gases and 250 mm from catalytic converter.
On some models establish nylon fuel hoses with quick-detachable connectors. In this case in need of replacement of one hose you make replacement of hoses complete with quick-detachable connectors.
You make replacement of fuel tubes / hoses as follows.
Dump pressure in fuel system.
Release all clips fixing a tube/hose to a car body.
On usual connections of a steel fuel tube and hose, weaken a collar, then extend a tube of their hose. Provorachivany in different directions a tube and a hose facilitates separation process.

Fig. 5.3. Opening of a clip (1) of a quick-detachable connector


Fig. 5.4. Pressing of clamps and extraction of a tube from a quick-detachable connector


If connection of hoses is carried out by a quick-detachable connector, open and remove a clip, then one hand from two parties press clamps, and other hand take a tube from a connector (fig. 5.3, 5.4) .
At connection of tubes and hoses surely establish new sealing rings (if it is provided by a design).
On quick-detachable connectors combine a tube with a connector and insert a tube into a connector to a zashchelkivaniye its clamps.

Fig. 5.5. Usual connection of a hose with a steel tube: 1 – steel tube; 2 – hose; 3 – collar


At usual connection of a hose with a steel tube pull a hose over a tube and fix connection by a collar (fig. 5.5) .