Lexus IS250 IS220d GSE20 ALE20 2AD-FHV COOLING

INSTALL WATER PUMP ASSEMBLY

INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY

INSTALL V-RIBBED BELT

INSTALL RADIATOR RESERVE TANK ASSEMBLY

ADD ENGINE COOLANT

CHECK FOR ENGINE COOLANT LEAKAGE

INSTALL ENGINE UNDER COVER

INSTALL NO. 1 ENGINE COVER

INSTALL NO. 1 INLET AIR CLEANER

INSTALL COOL AIR INTAKE DUCT SEAL

WATER PUMP - INSTALLATION

1. INSTALL WATER PUMP ASSEMBLY

Align the protrusions and install a new gasket onto the timing chain cover.

Apply adhesive to the bolt (A) shown in the illustration.

Bolt length
Item	Length (mm)
Bolt (B)	30
Bolts except (B)	45

Install the 2 bolts (*1), then tighten the other bolts.

Torque:
32 N*m{ 326 kgf*cm, 24 ft.*lbf}

2. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY

Install the No. 2 idler pulley sub-assembly with the bolt and No. 2 idler pulley cover plate.

Torque:
40 N*m{ 408 kgf*cm, 30 ft.*lbf}

3. INSTALL V-RIBBED BELT

Install the V-ribbed belt.

While turning the belt tensioner counterclockwise, remove the bar.

NOTICE:

Put the backside of the V-ribbed belt on the tensioner pulley and idler No. 1 pulley.

Check that the V-ribbed belt is properly seated on each pulley.

After installing the V-ribbed belt, check that it fits properly in the ribbed grooves. Check to confirm that the belt has not slipped out of the grooves on the bottom of the crank pulley by hand.

After installing a new belt, run the engine for approximately 5 minutes and then recheck the tension.

If it is difficult to install the V-ribbed belt, perform the following procedure.

Put the V-ribbed belt on every part except the tensioner pulley as shown in the illustration.

While releasing the belt tension by turning the belt tensioner counterclockwise, put the V-ribbed belt on the tensioner pulley.

NOTICE:

Put the backside of the V-ribbed belt on the tensioner pulley and idler pulley.

Check that the V-ribbed belt is properly seated on each pulley.

4. INSTALL RADIATOR RESERVE TANK ASSEMBLY

Install the radiator reserve tank to the upper radiator support with the 2 bolts.

Torque:
5.0 N*m{ 51 kgf*cm, 44 in.*lbf}

Install the reserve tank hose to the radiator reserve tank and secure it with the clip.

HINT:

Make sure that the claws on the clip are positioned as shown in the illustration.

Install the reserve tank outlet hose to the radiator reserve tank and secure it with the clip.

HINT:

Make sure that the claws on the clip are positioned as shown in the illustration.

5. ADD ENGINE COOLANT

Tighten all the plugs.

Torque:
for cylinder block drain cock plug:
20 N*m{ 204 kgf*cm, 15 ft.*lbf}

Add engine coolant.

Specified capacity:
8.9 liters (9.4 US qts, 7.8 lmp. qts)

HINT:

The coolant reserve tanks of TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology that consists of a combination of low phosphates and organic acids).

Contact your TOYOTA dealer for further details.

Slowly pour coolant into the radiator reservoir until it reaches the FULL line.

Squeeze the inlet and outlet radiator hoses several times by hand, and then check the level of the coolant.

If the coolant level is low, add coolant.

Install the radiator cap.

Bleed air from the cooling system.

NOTICE:

Before starting the engine, turn the A/C switch off.

Warm up the engine until the thermostat opens. While the thermostat is open, allow the coolant to circulate for several minutes.

HINT:

The thermostat open timing can be confirmed by squeezing the inlet radiator hose by hand, and sensing vibrations when the engine coolant starts to flow inside the hose.

NOTICE:

When squeezing the radiator hose:

Wear protective gloves.

Be careful as the radiator hoses are hot.

Keep your hands away from the radiator fan.

Maintain the engine speed at 2,000 to 2,500 rpm.

Squeeze the inlet and outlet radiator hoses several times by hand to bleed air from the system.

NOTICE:

When squeezing the radiator hoses:

Wear protective gloves.

Be careful as the radiator hoses are hot.

Keep your hands away from the radiator fan.

Stop the engine and wait until the engine coolant cools down to ambient temperature.

CAUTION:

Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

Check the coolant level in the reserve tank.

If the coolant level is low, add coolant to the reserve tank FULL line.

6. CHECK FOR ENGINE COOLANT LEAKAGE

CAUTION:

Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

NOTICE:

Before performing each inspection, turn the A/C switch off.

Fill the radiator with coolant and attach a radiator cap tester.

Warm up the engine.

Using a radiator cap tester, increase the pressure inside the radiator to 177 kPa (1.8 kgf/cm, 26 psi), and check that the pressure does not drop.

If the pressure drops, check the hoses, radiator and water pump for leaks. If no external leaks are found, check the heater core, cylinder block and cylinder head.

7. INSTALL ENGINE UNDER COVER

8. INSTALL NO. 1 ENGINE COVER

Install the No. 1 engine cover.

9. INSTALL NO. 1 INLET AIR CLEANER

Install the inlet air cleaner with the bolt and clip.

Torque:
5.0 N*m{ 51 kgf*cm, 44 in.*lbf}

10. INSTALL COOL AIR INTAKE DUCT SEAL

Install the intake duct seal with the 11 clips.

LEXUS IS250, IS220d / GSE20 ALE20

2AD-FHV COOLING

Lexus IS250 IS220d GSE20 ALE20

WATER PUMP