Toyota Land Cruiser 100 / Amazon, Lexus LX 470

Since 1997 of release

Repair and car operation

Tojota Lend Kruzer, Amazon, Leksus LX470
+ Identification numbers of the car
+ Controls and receptions of safe operation of the car
+ Options and car routine maintenance
+ The engine
- Systems of cooling of the engine, salon and air conditioning heating
   Antifreeze - the general data
   Check of serviceability of functioning and thermostat replacement
   Condition check, removal and installation of the fan of system of cooling
   Removal and installation of a radiator and broad tank of system of cooling
   Check of a condition of the water pump
   Removal and installation of the water pump
   Check of serviceability of functioning and replacement of the block of the gauge of a measuring instrument of temperature of a cooling liquid
   Check of serviceability of functioning приводного the electromotor of the fan of a heater and its replacement
   Removal and installation of the block and the heater heat exchanger
   Removal and installation of assemblage of the control panel by functioning of a heater and air conditioner
   Check of serviceability of functioning and service of systems of heating and air conditioning
+ The power supply system and release of the fulfilled gases
+ Engine electric equipment
+ Control systems of the engine and decrease in toxicity of the fulfilled gases
+ Gear change box
+ Transmissionnaja line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Check of serviceability of functioning and thermostat replacement

Do not open a cover of a radiator and do not remove the thermostat before full cooling of the engine! The prevention in the beginning see also Has undressed Antifreeze – the general data.



1. Before definitively to affirm as opinion on a thermostat exit out of operation, check up level of a cooling liquid in system, a condition and effort of a tension приводного a belt (see the Head of Adjustment and car routine maintenance), and also serviceability of functioning of a measuring instrument / a control lamp of temperature.
2. One of the possible reasons of too slow warming up of the engine (according to measuring instrument indications) is thermostat jamming in open position. Replace the thermostat new.
3. In case of an engine overheat touch a hand the bottom hose of a radiator. If the hose not нагрет, probably, the thermostat is jammed in the closed position, blocking circulation of a cooling liquid through a radiator. Replace the thermostat.

At all do not maintain the car with the removed thermostat, the feedback of the onboard processor that will lead to increase of toxicity of the fulfilled gases and excessive increase in the expense of fuel thus can be broken off.

4. If the bottom hose нагрет, it means that the cooling liquid regularly circulates through a radiator, i.e. the thermostat is opened. Address to materials of the Section devoted to diagnostics of malfunctions of system of cooling (Introduction in the beginning of the present Management see).
5. The most exact results are given by thermostat check on a workbench.
6. Remove the thermostat from the engine (see more low).
7. Tie up to assemblage of the thermostat a piece of a wire and lower it in the capacity filled with water. There lower the thermometer.

Track, that the thermometer and the thermostat did not adjoin to walls and a capacity bottom.

8. Start to warm up slowly water, watching change of indications of the thermometer, – operation of the valve of the thermostat should occur in exact conformity to requirements of Specifications.
9. Estimate size of full opening of the valve, the rating value makes 8 mm (address to an accompanying illustration).


Details of installation of the thermostat on the petrol engine


1. Disconnect a negative wire from the battery.

If the stereosystem established on the car is equipped by a security code before to disconnect the battery make sure that have a correct combination for audiosystem input in action!

2. Merge cooling liquid (see the Head of Adjustment and car routine maintenance).
3. At a corresponding complete set disconnect from a thermostat casing vacuum hoses.
4a. Separate a casing of the thermostat from the engine (address to an illustration above), prepare for gathering of a spilt cooling liquid.
4b. The radiatornyj hose if it does not require replacement, can be left connected to a casing (address to an accompanying illustration).
5. Take the thermostat from a casing, try to remember its adjusting position. Carefully smooth out sealing surfaces of a cover and a casing of the thermostat a scraper, then wipe their rags moistened in solvent.
6. Establish a new rubber sealing lining.
7. Establish the thermostat and its casing on the regular places, at a corresponding complete set track, that assemblage has appeared is developed by the prorolling valve upwards.
8. Tighten all fixture with demanded effort. Operating as it should be the return to a dismantle order, establish into place all acting in film components.
9. Fill cooling system (see the Head of Adjustment and car routine maintenance). Start the engine and check up it on presence of leaks and serviceability of functioning of the thermostat (paragraphs with 2 on 4, Check see).