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
   General information
   General information about settings and adjustments
   Schedule of routine maintenance
   Check of levels of liquids, control of leaks
   Check of a condition of tires and pressure of their rating, rotation of wheels
   Replacement of impellent oil and oil filter
   General checks of brake system
   Check and replacement of the salonny filter of a heater and To/in
   Check of a condition and replacement of hoses of an impellent compartment, localization of leaks
   Check of a condition and replacement of belts of a drive of auxiliary units
   Replacement of a filtering element of an air purifier
   Check of a condition of system of production of the fulfilled gases
   Check and replacement of spark plugs
   Replacement of brake liquid, pumping of brake system
   Check of a condition of components of a suspension bracket and steering
   Check of a condition of protective covers of power shafts and driveshaft hinges
   Check of operability of lighting devices, horn and heater fan
   EVAP system check
   Condition check, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery and care of it
   Replacement of cooling liquid (OZh)
   Check and adjustment of klapanny gaps
   Check and adjustment of a course of pedals of the working and parking brake
   Check of boots of the parking brake
+ 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
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schematic diagrams of electric connections

General checks of brake system

The dust being formed as a result of wear of slips and accumulating on components of the brake mechanism, can contain asbestos hazardous to health. Do not blow this dust by means of the compressed air and do not inhale it! Do not use solvents on the basis of gasoline for dust removal.

Except checks through the established intervals of time a condition of brake mechanisms it is necessary to carry out each time at removal of wheels or at emergence of signs of malfunction in system.

Signs of malfunctions in brake system

Disk brake mechanisms have the built-in indicators of wear of the frictional slips, signaling that wear of slips reached critical size. Thus slips should be changed immediately, differently brake disks will be damaged and they will need expensive repair.

Any of listed below signs can point to potential defect of brake system:

  • When squeezing a pedal of a brake the car "withdraws" in one party;
  • Brake mechanisms when braking publish scraping or squealing sounds;
  • The pedal of a brake has an excessive course;
  • The pedal of a brake pulses (it normally only at ABS system work);
  • Leakages of brake liquid (usually appreciable tires on inside or wheels) are observed.

In case of detection at least one of these signs immediately examine brake system.

Brake lines and hoses

In brake system steel brake tubes, except for the flexible reinforced hoses at wheels are generally used. Regular survey of all these lines is very important.


  1. Park the car on an equal platform.
  2. To Poddomkratta the car also establish it on props then remove wheels.
  3. Check all brake lines and hoses on existence of cracks and attritions in their external covering, leaks, swellings and deformations. Check brake hoses in forward and back parts of the car on existence of signs of a softening, cracks, deformations or wear as a result of a friction about other components. Check all shtutserny connections on existence of signs of leaks and make sure of reliability of fastening of all bolts and clips of brake hoses.
  4. Bend hands in one and other parties a brake hose to reveal damages. To braid hoses does not follow.
  5. Turn a steering wheel to the right and to the left against the stop. Make sure that hoses thus do not touch elements of a design of the car.
  6. At detection of leakages of liquid or their damages it is necessary to eliminate immediately. For more detailed description of procedure of repair of brake system address to Head Brake system.

Check of thickness of brake shoes and disks


  1. To Poddomkratta the car also establish it on props then remove the corresponding wheel.
  1. Check thickness of overlays of brake shoes and through an opening in a support of the brake mechanism.
  1. Limit of wear of a block the thickness of an overlay of 1.0 mm (without a metal substrate) is considered. In this case it is necessary to replace a brake shoe (see. Head Brake system).

As a rule, 1 mm of wear of a brake shoe corresponds, at least, 1000 km of run under adverse service conditions. In usual conditions of a slip are erased much more slowly. So, at thickness of a brake overlay of 3.0 mm (without a substrate) brake shoes will suffice still, at least, on 1500 km of run.

  1. In case of doubt in correctness of measurement remove brake shoes and measure thickness of a slip by a calliper. If degree of wear is already reached, replace brake shoes. Thus replace all 4 overlays of wheels of one axis, even in case only one slip wore out.
  2. Check supports of the brake mechanism on existence of leaks. At leaks urgently repair a support of the brake mechanism.
  3. Visually check brake disks from internal and outer side on existence of furrows, a rust, cracks, if necessary replace disks.
  1. Measure thickness of brake disks in several places by means of a micrometer or a special calliper. It is possible to measure also thickness of a brake disk by a usual calliper, having enclosed from each its party a lining of known size (for example, two coins), and then having subtracted from the measured value thickness of a lining.
  1. Compare minimum of the received results to requirements of Specifications to Head Brake system. If the limit of wear is reached, replace surely both brake disks of wheels on one axis. Also it is necessary to replace a brake disk and at big cracks or furrows with depth more than 0.5 mm.
  2. Establish wheels and lower the car on the earth.

Check of the parking brake


  1. Park the car on an equal surface and release the parking brake.
  2. The car should move manually, action of brakes should not be felt.
  3. Cock the lever of the parking brake on 1 click (the European models) or press a pedal of the parking brake (the American models), the car should remain on a place in attempt to shift it manually.
  4. Completely cock the lever of the parking brake (the European models) – it should not be cocked more than on 5 clicks. Otherwise adjust the parking brake (see. Head Brake system).