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Thermostat
Removing the thermostat in the following order:
| Fig. 4.1. Engine cooling system SOHC: 1 - a radiator; 2 - the thermostat; 3 - connecting pipe; 4 - a broad tank; 5 - the top cover; 6 - the air intake; 7 - Mount the fan (EZ); 8 - Mount the fan (RV, RP); 9 - Mount the fan; 10 - additional fan; 11 - the drive belt; 12 - electric fan
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| Fig. 4.2. Engine cooling system DOHC: 1 - a radiator; 2 - pump; 3 - thermostat ;, 4 - a broad tank; 5 - water heat exchanger; 6 - the back cover; 7 - an arm of the fan; 8 - an arm of the fans; 9 - electric fan; 10 - additional fan; 11 - the drive belt; 12 - the top cover; 13 - air intake
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- The thermostat 2 (see. Fig. 4.1) and 3 (see. Fig. 4.2) is located in the base of the water pump; - Drain the coolant from the cooling system; - Unscrew the two screws and remove the thermostat; - Remove the O-ring; - Remove the thermostat from the body at the bottom of the water pump.
A WARNING Before removing the thermostat, mark its position in the housing. |
Check the thermostat in the following order:
| Fig. 4.5. Working positions of the thermostat: a - the thermostat is closed; b - the thermostat is open
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- If the thermostat is in an open position (Fig. 4.5) at room temperature, then it must be replaced;
| Fig. 4.6. Check thermostat
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- To check the thermostat lower to the splits in a container with water (Fig. 4.6). Gradually heating the water, measure the temperature at which the thermostat starts to open and is fully open. Remove the thermostat from the water and check that it is completely closed after cooling. Replace the thermostat if its parameters are different from the specifications. The thermostat setting in the following order: - Clean the thermostat housing and the mating surfaces; - Set the thermostat to the body in the position in which the thermostat is before removal; - Install a new O-ring; - Replace the cover and tighten bolts to torque; - Set the water hoses, bracket, power steering pump; - Set the pump drive belt; - Fill the cooling system with liquid.
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