1998 — 2003 of release

Repair and car operation

RX 300 Lexus
+ Lexus RX-300 Cars
+ Governing bodies and operation receptions
+ Settings and routine maintenance of the car
+ Engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ the Power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Transmission line
- Brake system
   General information and security measures
   Removal, installation and check of pedals of brake system
   Check of brake system via the socket of the module of management
   Removal and installation of the tank and main brake cylinder (GTTs)
   Removal, check and installation of the amplifier of brakes
   Replacement of brake shoes
   Removal, dismantling, check, assembly and installation of supports of brake mechanisms
   Dismantling, check and assembly of the parking brake
   Check of the valve of distribution of brake effort
   Removal and installation of the activator of brakes
   Removal and installation of wheel sensors
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schematic diagrams of electric connections

Removal, dismantling, check, assembly and installation of supports of brake mechanisms

Components of assembly of the brake mechanism of a forward wheel are presented on an illustration Assembly of the forward brake mechanism.

Assembly of the back brake mechanism

1 — Laying
2 — the Stopper
3 — the pumping Union
4 — the Support
5 — the Boot
6 — the Piston
7 — the Ring of a cover of the piston
8 — a piston Cover

9 — piston Consolidation
10 — the Directing plug
11 — the Main hairpin
12 — a support Bracket
13 — the External brake shoe
14 — the Internal antivizgovy slip
15 — Antivizgovaya a slip
16 — Holders of brake shoes
17 — the Internal brake shoe

Removal and dismantling


  1. Remove the corresponding wheel and temporarily fix a brake disk wheel nuts.
  2. Turn out from a support a bolt, remove laying and disconnect a flexible brake hose from a support.

Prepare capacity for collecting brake liquid.

  1. Turn out adjusting bolts of a support (on the back brake mechanism – one bolt) and remove a support from a bracket.
  2. Remove brake shoes with antivizgovy slips and holders of blocks.
  3. On the back brake mechanism remove, the main hairpin directing the plug with two epiploons and a cover of the main hairpin.
  4. By means of a screw-driver remove a ring of a cover of the brake piston and a cover.
  5. Lay between the piston and a support rags not to damage the piston at its extraction and, having submitted the compressed air to the union of the brake mechanism, вытолкните the piston from the cylinder.

Do not hold fingers between the piston and a support during piston removal by means of the compressed air.

  1. Screw-driver remove piston consolidation:
    • On the forward brake mechanism;
    • Remove from a support bracket two directing pins;
    • Remove directing plug from the top party of a directing pin;
    • Bring down two boots by means of a screw-driver and a hammer.



  1. Measure thickness of brake disks and overlays of brake shoes and compare the received values to requirements of Specifications of Head Brake system. Examine blocks and disks on existence of mechanical damages. If necessary replace blocks and/or disks.
  2. Measure axial palpation of a disk at distance of 10 mm from its external edge and compare result of measurement to requirements of Specifications of Head Brake system. If necessary check axial люфт the bearing. Adjust disk palpation for what execute the following operations:
    • Turn out two bolts of fastening of a bracket of a support to a rotary fist and remove a bracket;
    • Remove a brake disk and establish it in situation, povyornuty from original on 1/5 turns;
    • Tighten wheel nuts with effort of 103 Nanometers;
    • Measure disk palpation in this situation and write down results of measurement;
    • Repeat the last three operations for remained three provisions of a disk on a nave;
    • If in any of provisions palpation of a disk meets requirements of Specifications of Head Brake system, establish a disk in this situation. Otherwise replace a disk and again measure its axial palpation;
    • Establish a bracket of a support and tighten bolts of its fastening with demanded effort.

Assembly and installation


  1. Assembly and installation are made upside-down. Pay attention to the next moments:
    • Do not allow oil and greasing hit on frictional overlays of brake shoes;
    • At installation of boots track, that their metal parts reliably adjoined to a support bracket;
    • Tighten all connections with demanded efforts;
    • After installation fill brake system with liquid, pump over it and check system on leaks.