Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and operation of the car



Toyota 4ranner
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Systems of heating, ventilation
+ 5. Fuel and exhaust systems
+ 6. Transmissions
+ 7. Transmission elements
- 8. Brake system
   8.1. Specifications
   8.2. ABS system
   8.3. Blocks of disk brakes
   8.4. Brake support
   8.5. Brake disk
   8.6. Blocks of drum brakes
   8.7. Wheel cylinder of back brakes
   8.8. Main cylinder of brakes
   8.9. Hoses and tubes of a hydraulic actuator
   8.10. Pressure regulator
   8.11. Emergency brake
   8.12. Cables of the emergency brake
   8.13. Vacuum amplifier of brakes
   8.14. Pumping of brakes
   8.15. Adjustment of a pedal of a brake
   8.16. Braking signal switch
+ 9. Suspension bracket and steering
+ 10. Body
+ 11. Electric equipment
+ 12. Electrical circuitries



8.14. Pumping of brakes

GENERAL INFORMATION

Need of pumping arises after a detachment of tubes of the main cylinder or at strong lowering of the level in a tank.

When dismantling a hydraulic actuator of one wheel it is possible to be limited to pumping only of the understanding contour.

Press several times a pedal of a brake and remove residual depression in the amplifier.

Before pumping restore liquid level in a tank and during pumping support level, without allowing a tank opopustosheniye. Fill in only fresh liquid.

PERFORMANCE ORDER
1. Begin pumping with a back right wheel. Attach a hose to the union, lower other end of a hose in a vessel with brake fluid.
2. Ask the assistant to press slowly a pedal of a brake and to hold.
3. Unscrew the union and later 2 sec. after the stream of the liquid following with bubbles weakens, tighten the union. Ask the assistant to release a pedal.
4. Repeat the procedure until in the following liquid bubbles do not cease to be observed. Tighten the union.
5. Perform these operations in the sequence: left back wheel, right forward, left forward, pressure regulator. Upon termination of restore liquid level in a tank.
6. Check rigidity of a pedal and work of brakes.

Prevention

If a pedal "soft", then repeat pumping. If it is not possible to remove air, then hit of air in ABS system valves can be the cause. Therefore if a pedal "soft" after repeated pumping lamps of BRAKE or ANTI-LOCK also burn, then tow off the car in car service for check by the scanner.