Cooling, heating and ventilation systems The heating system includes: fan and radiator mounted under the front panel; hoses for supplying and discharging coolant from the engine cooling system; interior heating/cooling control panel. The air conditioning...
Technical data of the cooling and heating system Radiator Plug Valve Setting Pressure 0.6 - 1.0 bar Thermostat opening temperature 80 - 85°C Type of refrigerant in the air conditioning system R – 134A Quantity 600 - 700 g Tightening torques (in Nm) Oil cooler bypass...
Cooling system thermostat — replacement Thermostat 4-cylinder engine 1. Thermostat; 2. Gasket; 3. Inlet pipe Engine thermostat V6 3.4L (or 3.0 l) 1. Thermostat; 2. Gasket; 3. Collar; 4. Hose; 5. Inlet pipe If the lower radiator hose is cool on a warm engine,...
Fan impeller and fluid coupling — check, removal and installation 1. If cracks are found on the blades or impeller play on the shaft, replace the impeller. 2. If leakage is detected from the coupling, also if the rotation of the impeller is too loose or too tight, replace the...
Radiator and tank — removal and installation Radiator and related parts 1, 4. Hose; 2, 15, 22. Rack; 3, 21. Cork; 5. Battery clamp; 6. Battery; 7. Tray; 8. Casing 1; 9. Casing 2; 10. Tank; 11. Lattice; 12. Side lamp; 13. Pump pulley; 14. Impeller and clutch; 16,...
Oil cooler — removal and installation Oil cooler parts 1. Ring; 2, 4. Gasket; 3. Oil cooler; 5. Bypass valve; 6. Hose 1; 7. Hose 2 Removing 1. Disconnect the battery from the ground. 2. After the engine has completely cooled down, drain the fluid. 3. Remove...
Checking the water pump 1. With the engine running, pinch the upper radiator hose and release gradually. With a working pump, fluid pressure should be felt in the hose. 2. The pump has a control hole for draining fluid (shown by arrow). If the...
Removal and installation of the water pump Coolant pump on 4-cylinder engines 1. Gasket; 2. Pump; 3. Belt; 4. Pulley; 5. Coupling; 6. Impeller; 7. Casing 1; 8. Casing 2 4-cylinder engines 1. Disconnect the battery from the ground and drain the coolant (see...
Coolant temperature sensor — check and replace Location of the temperature sensor on 4-cylinder engines 1. Temperature sensor 2. Oil pressure sensor Temperature sensor on V6 3.0L engine 1. Temperature sensor 2. Oil pressure sensor Temperature sensor on V6 3.4L...
Heater fan motor and circuit — check and replace Heater motor with front panel removed Rear blower parts Attention! When performing work on the heater, turn the ignition key to the LOCK position, disconnect the battery from the mass and start work no earlier than...
Heater radiator — removal and installation Front heater 1. Radiator; 2. Ventilation channel; 3. Housing; 4. Tubes Rear heater 1. Front seats; 2. Rear center section; 3. Rear heater; 4, 6. Body; 5. Radiator; 7. Relay; 8. Wires; 9. Resistor; 10. Electric motor;...
Air conditioning unit control panel Typical location of cables for controlling the air conditioning unit 1. Air damper cable 2. Mixing flap cable 3. Ventilation flow control cable Removing 1. Disconnect the battery from the ground. 2. Remove the center...
Air conditioning system — design description Air conditioning system for Toyota 4 Runner/ Hilux/ Surt 1996 1. Main relay; 2. Heater radiator; 3. Front heater main relay; 4. Air conditioning; 5. Evaporator; 6. Expansion valve; 7. Fan resistor; 8. Thermistor; 9....
Checking the A/C Refrigerant Charge The main units of the air cooling system 1, 8. Suction hose; 2. Liquid refrigerant pipe; 3. Evaporator; 4. Expansion valve; 5. Outlet hose (engine 2.7 l); 6. Outlet hose (3.4 l engine); 7, 12, 13. Liquefied refrigerant...
Checking the heating system 1. If there is no air heating in the heater, then the reasons may be the following: the thermostat does not close, as a result of which the liquid does not warm up enough and heats up the heater radiator poorly -...
Air conditioning compressor — removal and installation Compressor mounting details on a 4-cylinder engine 1. Bracket; 2. Belt; 3. Engine guards; 4. Tighten with a torque wrench; 5. Outlet hose; 6. Suction hose; 7. Ring Compressor and related parts on a V6 3.4L engine 1....