Toyota 90916-03093
Thermostat

As a first step to serve the thermostat you must drain the engine coolant. The first step for servicing the thermostat involves removing the water inlet using 2 nut removal and disconnecting its connection to the cylinder block. Then, remove the thermostat. Install the new gasket to the thermostat before placing the device inside the cylinder block with its jiggle valve pointing up into a 10 degrees range of each indication mark. Reinstall the water inlet onto the cylinder block then tighten its 2 nuts to 9.0 Nm (92 kgf-cm, 80 inch lbs.) torque while verifying that the gasket remains outside the water inlet to cylinder block space. Complete the repair by pouring engine coolant after checking for fluid leaks from the system.

The first step for replacing the thermostat requires drain of engine coolant. The next step is to disconnect the water inlet from the cylinder block through removing its two nuts. Install the new thermostat by placing a fresh gasket on it before setting the jiggle valve upward at a 10-degree angle. The jiggle valve requires a 10-degree alignment either to the left or right side. Reinstall the water inlet after applying 9.0 Nm of torque (92 kgf-cm or 80 inch lbs.) yet maintain caution against perserving the gasket between these parts. Instructions to complete the task include adding engine coolant and inspecting the area for fluid leaks.

Service operations for the thermostat need to begin by draining engine coolant. The first step for servicing the thermostat includes removing the water inlet by detaching its 2 nuts and separating it from the cylinder block. Then, remove the thermostat. Install the new gasket on the thermostat before inserting it with the jiggle valve pointing upward at a 10 degrees orientation relative to each side as marked by symbols. Fasten the water inlet back to the cylinder block by using its 2 nuts with 9.0 Nm (92 kgf-cm, 80 inch lbs.) torque but check for gasket placement between the water inlet and cylinder block. To finish the replacement process add engine coolant and inspect for any leakages.

Service of the thermostat begins with removing the engine coolant through drainage. Service owners should begin by disconnecting the wire harness clamp from the water inlet then use a wrench to remove the 2 nuts which disconnect the water inlet from the cylinder block before ultimately removing the thermostat with its gasket. Reviews must establish the correct operating temperature of the thermostat by immersing it in water and heating it slowly while monitoring the valve opening from 80 - 84 degrees Celsius (176 - 183 degrees Fahrenheit). A thermostat requiring replacement should display these criteria. Check the thermostat valve lift when the temperature reaches 93 degrees Celsius (199 degrees Fahrenheit) because the lift should be between 8.5 and 10.345 inches otherwise replace it. Within cold conditions below 40 degrees Celsius (104 degrees Fahrenheit), check the valve closure status; non-closed valves require immediate thermostat replacement. You must install the new gasket on the thermostat before installing it facing upward from the prescribed position while keeping the jiggle valve within a 10 degrees window. After installing the water inlet with its 2 nuts you must reconnect the wire harness to the water inlet and torque it to 9.0 Nm (90 kgf-cm, 80 inch lbs.). To complete the process you should add engine coolant while testing for leaks during engine operation.

The service process for the thermostat begins with draining engine coolant before continuing. Begin by disconnecting the wire harness clamp from the water inlet before taking off the 2 nuts which detach the water inlet from the cylinder block and finally removing the thermostat together with its gasket. Luxury and precision serve as criteria for testing the thermostat after hydrating it in water as you heat it up to measure its valve-opening capability - it needs to be between 80 - 84 degrees Celsius (176 - 183 degrees Fahrenheit); if this specification fails then replace the component. Examine the valve lift of the thermostat because it needs replacement if it does not extend past 8.5 mm (0.345 inch) at 93 degrees Celsius (199 degrees Fahrenheit). The valve needs to be checked for its ability to close completely when temperatures drop below 40 degrees Celsius (104 degrees Fahrenheit). Any exceptions indicate the need for thermostat replacement. The install procedure requires you to position the thermostat inside the cylinder block using a new gasket while placing the jiggle valve in an upward direction with a 10 degrees tolerance. The water inlet needs two nuts before installation while the wire harness needs to be reconnected to the water inlet and tightened to 9.0 Nm (90 kgf-cm, 80 inch lbs.). Complete the engine system by adding coolant and then start the engine while inspecting for any coolant leakage.

Draining the engine coolant should be the first step when replacing the 2TR-FE thermostat. Begin by removing the water inlet after undoing its bolt and 2 nuts before detaching the water inlet and extracting the gasket installed on the timing chain cover. After extracting the thermostat relocate it to the timing chain cover. The installation process requires you to set the jiggle valve upward on the thermostat while positioning it between 10 degrees of both sides of the recommended alignment. You should place a new gasket and the water inlet onto their positions and tighten the bolt and 2 nuts to 20 Nm (204 kgf-cm, 15 ft. lbs.). Last step is to pour the engine coolant while conducting a leak test.

The engine coolant needs draining before starting any servicing or repairing work on the thermostat. The next step requires removal of the water inlet by unfastening its 2 nuts to separate it from the cylinder block while removing the radiator hose. You should start by removing the thermostat from the cylinder block and then eliminating the gasket from the surface. Before replacement verify the thermostat functions by heating water then evaluate its valve opening temperature between 80 to 84 degrees Celsius (176 to 183 degrees Fahrenheit). Check that the 8.5 mm (0.335 in.) minimum valve lift measurement is present at 95 degrees Celsius (203 degrees Fahrenheit) temperature while validating that the valve closes completely under 77 degrees Celsius (171 degrees Fahrenheit) conditions. Thermostat replacement is needed if either of these criteria fails. The installation process requires a new gasket on top of the thermostat followed by installation orientation with the jiggle valve upward at an angle tolerance of 10 degrees. The radiator hose water inlet needs to be installed with its 2 nuts tightened to 9.0 N m (92 kgf cm and 80 in. lbf). Finish the process by pouring engine coolant into the system followed by a leak inspection.

The first step in servicing the thermostat requires engine coolant drainage. The first step involves removing the water inlet through the process of detaching its bolt and two nuts before detaching the water inlet and extracting the gasket from the timing chain cover. Extract the thermostat by taking it away from the timing chain cover. To perform the inspection you should heat the thermostat over time while submerged in water to verify that it opens at a programmed temperature between 80 to 84 degrees Celsius (176 to 183 degrees Fahrenheit); replace the damaged thermostat. A valve lift measurement must reach 8.5 mm (0.355 inch) when the thermostat temperature reaches 95 degrees Celsius (203 degrees Fahrenheit) and this check demands that a replacement thermostat be installed when the measurement fails to meet the specified level. Thermostat replacement is necessary if the valve remains open beyond 77 degrees Celsius (171 degrees Fahrenheit). Start by laying a new gasket across the thermostat and position the component with its jiggle valve oriented upward while keeping in mind that this component should face within a 10° range to either direction of the recommended setting. After placing a fresh gasket you must install the water inlet with the bolt and two nuts according to a torque setting of 20 Nm (204 kgf-cm, 15 ft. lbs.). Engine coolant addition is followed by leak inspection during the final stage of the installation process.

Remove the water inlet by taking off the 2 nuts and disconnecting it from the cylinder block.

Be careful not to let the gasket get caught between the water inlet and cylinder block.

The jiggle valve should be facing upward, which may be set within 10 degrees of either side.

Ensure it is within 10° of the prescribed position.

Immerse it in water and gradually heat it to check the valve opening temperature, which should be between 80 - 84°C (176 - 183°F).

Place a new gasket on the thermostat with the jiggle valve facing upward, ensuring it is within 10° of the prescribed position.

Begin by removing the radiator support opening cover.

A torque of 9.0 Nm (90 kgf-cm, 80 inch lbs.).

Drain the engine coolant.

Confirm that the gasket is not trapped between the water inlet and the cylinder block.

Attach a new gasket to the thermostat and position it with the jiggle valve facing upward, set within 10° of either side.

Add engine coolant and check for any engine coolant leakage.

Tighten them to a torque of 9.0 Nm (92 kgf-cm, 80 in-lbf).

Remove the gasket from the timing chain cover.

Add engine coolant and check for any coolant leakage.

Install a new gasket and the water inlet using the bolt and 2 nuts, applying a torque of 20 Nm (204 kgf-cm, 15 ft-lbf).

Tighten them to a torque of 9.0 Nm (92 kgf-cm, 80 in-lbf).