Engine Cooling System: Removal & Installation Toyota Sequoia I рестайлинг

REPLACEMENT

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1. REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT Remove the radiator cap. Remove the 3 drain plugs on the engine and radiator, and drain the coolant. Close the 3 drain plugs. Torque: 12.7 N.m (130 kgf.cm, 9 ft.lbf) for engine
3. REFILL WITH ENGINE COOLANT Slowly fill the system with coolant. Capacity: 11.6 liters (12.3 US qts, 10.2 Imp. qts) NOTE: Do not use plain water alone. HINT: Use of improper coolants may damage the engine cooling system. Use "Toyota Super Long Life Coolant" or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology. New Toyota vehicles are filled with Toyota Super Long Life Coolant (color is pink, premixed ethylene glycol concentration is approximately 50 % and freezing temperature is -35° C (-31° F)). When replacing the coolant, Toyota Super long Life Coolant is recommended. Observe the coolant level inside the radiator by pressing the inlet and outlet radiator hoses several times by hand, if the coolant level goes down, add the coolant. Install the radiator cap. Bleed the cooling system. Start the engine, and open the heater water valve. Maintain the engine speed at 2,000 - 2,500 RPM, and warm up the engine. Stop the engine, and wait until the engine coolant cools down. Refill coolant into the reservoir until it is "FULL".
4. CHECK FOR ENGINE COOLANT LEAKS
5. CHECK ENGINE COOLANT SPECIFIC GRAVITY CORRECTLY
6. REINSTALL ENGINE UNDER COVER

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1. DRAIN ENGINE COOLANT
2. REMOVE TIMING BELT (See «REMOVAL»(ref-227588-S04936813212006040600000) )
3. REMOVE NO. 2 IDLER PULLEY (See «REMOVAL»(ref-227588-S04936813212006040600000) )
4. REMOVE WATER INLET AND INLET HOUSING ASSEMBLY Disconnect the water bypass hose from the water inlet housing. Remove the 2 bolts holding the water inlet housing to the water pump. Disconnect the water inlet housing from the front water bypass joint, and remove the water inlet and inlet housing assembly. Remove the O-ring from the water inlet housing.
5. REMOVE WATER PUMP Remove the 5 bolts, 2 stud bolts, nut, water pump and gasket. Remove the O-ring from the water bypass pipe.

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1. INSPECT WATER PUMP Visually check the air hole and water hole for coolant leakage. If leakage is found, replace the water pump and timing belt. Turn the pulley, and check that the water pump bearing moves smoothly and quietly. If necessary, replace the water pump.
2. INSPECT FLUID COUPLING Remove the 4 nuts and fan from the fluid coupling. Check that the fluid coupling is not damaged and that no silicon oil leaks. If necessary, replace the fluid coupling. Reinstall the fan to the fluid coupling with the 4 nuts. Torque: 8.5 N.m (85 kgf.cm, 75 in.lbf)
3. INSPECT FAN PULLEY BRACKET Check the turning smoothness of the fan pulley. If necessary, replace the pulley bracket.
4. INSPECT TIMING BELT COMPONENTS (See «INSPECTION»(ref-227588-S07253668192006040600000) )

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1. INSTALL WATER PUMP Install a new O-ring to the water bypass pipe end. Apply soapy water to the O-ring. Connect the water pump to the water bypass pipe end. Install the water pump and a new gasket with the 5 bolts, 2 stud bolts and nut. Uniformly tighten the bolts, stud bolts and nut in several passes. Torque: Bolt: 21 N.m (215 kgf.cm, 15 ft.lbf) Stud bolt and nut: 18 N.m (185 kgf.cm, 13 ft.lbf)
2. INSTALL WATER INLET AND INLET HOUSING ASSEMBLY Remove any old packing (FIPG) material and be careful not to drop any oil on the contact surfaces of the water inlet housing and water pump. Using a razor blade and gasket scraper, remove all the old packing (FIPG) material from the gasket surfaces and sealing groove. Thoroughly clean all components to remove all the loose material. Using a non-residue solvent, clean both sealing surfaces. Apply seal packing to the sealing groove of water inlet housing as shown in the illustration. Seal packing: Part No. 08826-00100 or equivalent Install a nozzle that has been cut to a 2 - 3 mm (0.08 - 0.12 in.) opening. Parts must be assembled within 3 minutes of application. Otherwise the material must be removed and reapplied. Immediately remove nozzle from the tube and reinstall cap. Install a new O-ring to the water inlet housing. Apply soapy water on the O-ring. Attach the water inlet housing end to the front water bypass joint hole. Install the water inlet and housing assembly with the 2 bolts. Alternately tighten the bolts. Torque: 18 N.m (185 kgf.cm, 13 ft.lbf) HINT: Each bolt length is indicated in the illustration. Bolt length: 76 mm (3.00 in.) for A 22 mm (0.87 in.) for B Connect the water bypass hose to the water inlet housing.
3. INSTALL NO. 2 IDLER PULLEY (See «INSTALLATION»(ref-227588-S35363131742006040600000) )
4. INSTALL TIMING BELT (See «INSTALLATION»(ref-227588-S35363131742006040600000) )
5. FILL WITH ENGINE COOLANT
6. START ENGINE AND CHECK FOR ENGINE COOLANT LEAKS
7. RECHECK ENGINE COOLANT LEVEL

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REMOVAL

HINT

Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat.

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1. DRAIN ENGINE COOLANT
2. DISCONNECT WATER INLET FROM WATER INLET HOUSING Remove the 3 nuts and disconnect the water inlet from the water inlet housing.
3. REMOVE THERMOSTAT Remove the thermostat. Remove the gasket from the thermostat.