1998 — 2003 of release

Repair and operation of the car

Lexus RX 300
+ Lexus RX-300 cars
+ Governing bodies and methods of operation
- 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 motive oil and oil filter
   General checks of the brake system
   Check and replacement of the saloon filter of a heater and To/in
   Check of a state and replacement of hoses of a motive compartment, localization of leaks
   Check of a state and replacement of belts of the drive of auxiliary units
   Replacement of the filtering air cleaner element
   Check of a condition of system of production of the fulfilled gases
   Check and replacement of spark plugs
   Replacement of brake fluid, pumping of the 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 hinges of the driveshaft
   Check of operability of lighting fixtures, horn and fan of a heater
   Check of the EVAP system
   Check of a state, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery and care of it
   Replacement of the cooling liquid (CL)
   Check and adjustment of valvate gaps
   Check and adjustment of the course of pedals of the working and parking brake
   Check of boots of the parking brake
+ Engine
+ Cooling systems of the engine, heating, ventilation and air conditioning
+ A 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


Replacement of brake fluid, pumping of the brake system

General information

Brake fluid through an air vent of the GTTs tank absorbs moisture. Thereof eventually the boiling point of brake fluid decreases that at considerable load of brakes can lead to formation of steam bubbles in brake lines and reduce efficiency of action of brakes.

Brake fluid should be replaced whenever possible in the spring. At operation of the car in the mountain area, on the roads processed by salt and also in the conditions of the sea air containing salts, it is necessary to replace brake fluid more often than it is stipulated in graphics of routine maintenance (see the Section Schedule of Routine Maintenance).

Replacement of brake fluid will require the help of the assistant, however on HUNDRED this procedure is usually carried out by means of the special device. When pumping the brake system the car has to be parked on the flat horizontal platform.

Brake fluid is poisonous. Do not suck away it a mouth through a hose. You store brake fluid only in the capacity to which casual access for children is excluded.

Coal deposits
Symptoms: Availability of soot indicates reenrichment of fuel-air mix or weak intensity of a spark. Causes admissions of ignition, complicates start and results in instability of operation of the engine.
Recommendations: Whether check the air cleaner is hammered whether fuel level in the float-operated camera is not too high, whether the air gate is jammed and whether contacts are not too worn-out. Try to use candles with longer insulator that increases the resilience to pollution.
Symptoms: Oiling of a candle is caused by wear of maslootrazhatelny caps. Oil gets to the combustion chamber through worn-out guides of valves or piston rings. Causes admissions of ignition, complicates start and results in instability of operation of the engine.
Recommendations: Perform mechanical recovery work and replace candles.
Symptoms: Porous, white insulator, erosion of electrodes and lack of any deposits. Leads to reduction of service life of a candle.
Recommendations: Check whether the kalilny number of the established candles conforms to requirements of Specifications, whether the ignition advancing corner is correctly exposed, whether too poor fuel-air mix moves, whether there is no leak of vacuum of the inlet pipeline and whether valves are jammed. Check also the level of a cooler and whether the radiator is corked.
Too early ignition
Symptoms: Electrodes are melted off. The insulator has white color, but maybe is polluted owing to admissions of ignition or hit in combustion chambers of foreign particles. Can lead to an engine exit out of operation.
Recommendations: Check kalilny number of the established candles, an ignition advancing corner, quality of mix (whether it is not too grown poor) whether the cooling system is corked and whether the lubrication system normally functions.
Electroconductive luster
Symptoms: The insulator has yellowish color and the polished appearance. Speaks about sudden temperature increase in combustion chambers at sharp acceleration. Usual deposits at the same time are melted off, taking a form of a varnish covering. Leads to admissions of ignition at high speeds of the movement.
Recommendations: Replace candles (colder, at preservation of a manner of driving).
Short circuit of electrodes
Symptoms: Waste of products of combustion gets to interelectrode space. Firm deposits accumulate, forming a crossing point between electrodes. Leads to refusal of ignition in the cylinder.
Recommendations: Remove deposits from interelectrode space.
Normal state of a candle
Symptoms: Gray-brown color and easy wear of electrodes. The Kalilny number of candles corresponds to type of the engine and its general state.
Recommendations: When replacing candles establish candles of the same type.
Symptoms: Soft deposits of brownish color on one or both electrodes of a candle. A source of their education are the applied additives to oil and/or fuel. Excessive accumulation can lead to isolation of electrodes and cause admissions of ignition and unstable operation of the engine at acceleration.
Recommendations: At bystry accumulation of deposits change maslootrazhatelny caps that will prevent hit of oil in combustion chambers. Try to replace fuel brand.
Symptoms: A rounding off of electrodes with a small congestion of deposits on the working end. Color is normal. Leads to difficulty of start of the engine in cold damp weather and to increase in fuel consumption.
Recommendations: Change candles on new, the same type.
Symptoms: Insulators can be chopped off or burst. Also inaccurate technology of adjustment of a candle gap can lead to damage of the insulator. Can lead to damage of pistons.
Symptoms: After admissions of ignition during a long period of adjournment can be loosened at preservation of working temperature in the combustion chamber. At high speeds of adjournment in flakes come off the piston and stick to the hot isolation center, causing admissions of ignition.
Recommendations: Replace candles or smooth out and establish into place old.
Mechanical damages
Symptoms: Can be caused by hit of foreign materials in the combustion chamber or arise at blow of the piston about too long candle. Lead to refusal of functioning of the cylinder and to damage of the piston.
Recommendations: Remove foreign particles from the engine and/or replace

Replacement of brake fluid and pumping of the brake system


  1. Disconnect a negative wire from the rechargeable battery.
  2. Uncover the tank of brake fluid (see an illustration the Components of a motive compartment which are subject to regular service).
  3. Note a felt-tip pen on a tank wall the level of brake fluid that then not to change it. Pump out brake fluid from the tank, having left a layer of liquid about 10 mm thick at its bottom.

Do not delete all liquid from the tank, otherwise air will get to the brake system.

  1. Fill the tank with new brake fluid to a tag "MOVE".
  2. After dismantling of GTTs and also in case it was devastated, it should be pumped over. For this purpose perform the following operations:
  1. Disconnect brake lines from GTTs.
  2. Ask the assistant to squeeze out a pedal of a brake and to hold it.
  1. Having corked with fingers branch pipes on GTTs, ask the assistant to release a brake pedal.
  1. Repeat procedures b) and c) 3-4 times.
  1. Carefully, not to curtail, open the pumping union. It is recommended in 2 hours prior to removal of air to process the union means for removal of a rust. If the union does not open, then operation on removal of air from the brake system should be charged to a workshop.
  1. Put on one end of a pure transparent hose the pumping union, and insert other end into a vessel for collecting brake fluid. In capacity it is necessary to pour a little brake fluid and to watch constantly that the end of a hose was shipped in it. Also capacity should be raised, at least, by 30 cm over the pumping union to provide pressure and to interfere with intake of air to the pumping union.
  2. Ask the assistant to squeeze out repeatedly a brake pedal until counter-pressure to pressing of a pedal becomes notable. Squeeze out a pedal and open the pumping union. After the pedal of a brake will rest against a floor, tighten the union. Take away a leg from a pedal. Repeating this process, pump out about 300 ml of old brake fluid before emergence new (she can be recognized on light color).
  3. Tighten the pumping union with effort of 8.3 Nanometers and add new brake fluid in the tank.
  4. In the same way pump out old brake fluid from other supports.

The merged brake fluid anyway has to be pure and without air bubbles.

  1. Press a pedal of a brake and check its free wheeling. It has to make 1 ± 6 mm.
  2. Fill in brake fluid in the tank to the level noted earlier.
  3. Pump over the actuation mechanism (activator) of the brake system. For this purpose perform the following operations:
    • Install on a jellied mouth of the tank of brake fluid the manual pump with the manometer (the tank has to be uncovered).
    • Connect a transparent flexible hose which other end lower in the capacity filled with brake fluid to the union of pumping of the activator.
    • Create pressure of 1 atm in the tank (but no more!) by means of the manual pump.
    • Give the union of pumping of the activator, let out the air and tighten the union with effort of 8.3 Nanometers.
  1. On the working engine check tightness of system. For this purpose press about 10 times a brake pedal with effort of 200 - 300 N (there correspond 20 - 30 kg). The pedal of a brake should not leave back. Check all connections of brake lines for leaks.
  2. In conclusion check action of brakes on the road with not heavy traffic of transport. For this purpose it is necessary to make not less than one strong braking, having checked ABS action. A sign of correct work of ABS is the brake pedal pulsation when braking.

The effect of action of ABS is best of all shown on the unpaved road.

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