1998-2003 of release

Repair and car operation

Lexus RX 300
+ Cars Lexus RX-300
+ Controls and operation receptions
+ Options and car routine maintenance
+ The engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ The power supply system and release of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Transmissionnaja line
- Brake system
   The general information and security measures
   Removal, installation and check of pedals of brake system
   Check of brake system through a socket of the module of management
   Removal and installation of the tank and the main brake cylinder (ГТЦ)
   Removal, check and installation of the amplifier of brakes
   Replacement brake pads
   Removal, dismantling, check, assemblage and installation of supports of brake mechanisms
   Dismantling, check and assemblage of a lay brake
   Check of the valve of distribution of brake effort
   Removal and installation of the activator of brakes
   Removal and installation of wheel gauges
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Basic schemes of electric connections

Dismantling, check and assemblage of a lay brake

Components of a lay brake

1 — the Intermediate lever
2 — the Regulator
3 — the Directing plate
4 — Raspornaja a plate
5 — the Spring
6 — the Washer
7 — the Back boot
8 — the Holder of a boot

9 — Returnable springs pads
10 — the Back disk brake mechanism
11 — the Washer with a cut
12 — the Forward boot
13 — the Clamping spring of a boot
14 — the Coupling spring
15 — a spring Saddle
16 — the Stopper


The description of check of boots of a lay brake is resulted in Section Check of boots of a lay brake.


  1. Measure internal diameter of a brake disk. Compare the received values to requirements of Specifications of the Head Brake system and if necessary replace a disk. It is necessary to replace a disk and at presence on it of mechanical damages or non-uniform deterioration.
  1. Measure a backlash between the intermediate lever and a boot of a lay brake and compare the received value to requirements of Specifications of the Head Brake system. If necessary adjust a backlash, having picked up a suitable washer (Specifications Brake system see).
  1. Take by means of a screw-driver an adjusting washer and a washer with a cut. Establish an adjusting washer of a demanded thickness, and then by means of nippers establish the lever and a washer with a cut. Again check up a backlash between the intermediate lever and a boot of a lay brake.

Dismantling and assemblage


  1. Remove a back wheel, turn out two bolts of fastening brackets a support and remove assemblage of the back brake mechanism then reliably fix it in the suspended position.

Do not overwind and do not load a brake hose.

  1. Remove a brake disk.

If it is not possible to remove a disk, turn a regulator of boots so that the wheel could rotate freely.

  1. Remove two returnable springs of boots by means of nippers.
  2. Disconnect a coupling spring from a forward boot.
  3. Shift a forward boot and remove a regulator.
  4. Remove распорную a plate with a spring.
  5. Remove saddles of clamping springs, springs and the holder of a back brake boot.
  6. Disconnect a cable of a drive of a lay brake from the intermediate lever.
  7. Assemblage is made upside-down. Grease with high-temperature greasing the components designated by arrows.
  1. After installation of a lay brake adjust a backlash of its boots. For this purpose:
    • Temporarily establish wheel nuts;
    • Turn out a stopper from a brake disk;
    • Turning a regulator, dissolve boots before blocking of a brake disk;
    • Return a regulator on 8 labels in the opposite direction and screw a stopper.
  1. Earn extra brake boots with a disk. For this purpose squeeze out a pedal of a lay brake with effort 147 Н and in this position be passed on the car on distance about 400 m with a speed about 50 km/h. Repeat this procedure 2-3 times.
  2. In summary again check up and adjust a course of a pedal of a drive of a lay brake (the Section Check and adjustment of a course of pedals of a working and lay brake see).