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


8.13. Vacuum amplifier of brakes


1. In use care of this unit is not required. It is only necessary to check a condition of a hose and the case of the amplifier.
2. For check of operation of the amplifier several times press a brake pedal on the idle engine. The pedal course by each pressing should not change (it is checked on distance to a floor).
3. Press a pedal and start the engine, – the pedal has to be displaced a little forward.
4. Start the engine, 1–2 min. later stop. With a force press a pedal several times, – the course of a pedal has to decrease gradually.
5. Start the engine and press a pedal. Holding a pedal of pressed, stop the engine, – during 30 sec. after a stop the provision of a pedal should not change.
6. If the amplifier is faulty, then he will lie down to replacement.


1. Disconnect a hose from the amplifier (it is specified by an arrow).
2. Turn off nuts of the main cylinder and carefully remove the cylinder from hairpins.
3. In salon to a rasshplintuyta an axis also unhook a pedal spring (the axis of a pusher and a spring are specified by shooters). Get an axis and disconnect a pusher fork from a pedal.
4. Turn off nuts of fastening of the amplifier (are specified by shooters) to a partition of a motor compartment.
5. Carefully give the amplifier and remove when hairpins leave a partition.


1. Installation is carried out upside-down. Replace the axis forelock. Adjust a brake pedal.
2. If the new unit is installed, then adjust a vystupaniye of a pusher of the main cylinder over the case of the amplifier. For this purpose execute the following.
3. Measure a pusher vystupaniye taking into account laying (1 gap). It is the size A. The gap between a pusher and the piston of the cylinder should not be, otherwise the brake pedal course increases. On the other hand the pusher should not rest against the piston as braking will be incomplete excessively.
4. Measure distance from an end face of the main cylinder to a flange. It is the size B.
5. Measure distance from a cylinder end face to the bottom of dredging of the piston. It is the size C.
6. The gap between a pusher and the piston is equal (In - C) - A. Otreguliruyte a pusher vystupaniye, rotating a pusher tip. Establish such vystupaniye And that the gap was equal to 0.