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Acura RL. Manual - part 403

Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Heat the water and check the temperature with a thermometer. Check the temperature when the

thermostat first opens, then check the temperature when the thermostat is fully open.

3. Measure the lift height of the thermostat when it is fully open.

Standard Thermostat:

Lift Height: Above 10.0 mm (0.39 in.)

Starts Opening: 169-176°F (76-80°C)

Fully Open: 194°F (90°C)

WATER PUMP INSPECTION

1. Remove the timing belt (see TIMING BELT REMOVAL ).

2. Turn the water pump counterclockwise, and make sure that it turns freely. If it doesn't, replace the

water pump (see WATER PUMP REPLACEMENT ).

Fig. 6: Turning Water Pump Counterclockwise And Checking It Turns Freely
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Install the timing belt (see TIMING BELT INSTALLATION ).

WATER PUMP REPLACEMENT

1. Drain the engine coolant (see COOLANT CHECK ).

2. Remove the timing belt (see TIMING BELT REMOVAL ).

3. Remove the timing belt adjuster (see TIMING BELT DRIVE PULLEY REPLACEMENT ).

4. Remove the water pump (A) by removing the five bolts.

NOTE:

When you check the water pump, you may see a small amount of
"weeping" from the bleed holes (A). This is normal.

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2005-08 ENGINE Cooling System - RL

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Fig. 7: Identifying Water Pump With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Inspect and clean the O-ring groove and the mating surface of the engine block.

6. Install the water pump with a new O-ring (B) in the reverse order of removal.

7. Clean up any spilled engine coolant.

8. Install the timing belt adjuster (see TIMING BELT DRIVE PULLEY REPLACEMENT ).

9. Install the timing belt (see TIMING BELT INSTALLATION ).

10. Refill the radiator with engine coolant, then bleed the air from the cooling system (see step 8 ).

COOLANT CHECK

1. Look at the coolant level in the coolant reservoir. Make sure it is between the MAX mark (A) and

MIN mark (B).

Fig. 8: Identifying Coolant Reservoir Coolant Level Marks
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. If the coolant level in the coolant reservoir is at or below the MIN mark, add coolant to bring it

between the MIN and MAX marks, then inspect the cooling system for leaks.

2007 Acura RL

2005-08 ENGINE Cooling System - RL

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COOLANT REPLACEMENT

1. Start the engine. Set the heater temperature control dial to maximum heat, then turn off the ignition

switch. Make sure the engine and radiator are cool to the touch.

2. Remove the radiator cap.

3. Loosen the drain plug (A) and drain the coolant.

Fig. 9: Loosening Radiator Coolant Drain Plug
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Install a rubber hose (A) on the drain bolt (B) located at the rear of the cylinder block, then loosen the

drain bolt.

Fig. 10: Draining Coolant At Rear Of Cylinder Block With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. When the coolant stops draining, tighten the drain bolt. Remove the rubber hose.

6. Tighten the radiator drain plug securely.

7. Remove the coolant reservoir and drain the coolant, then reinstall the coolant reservoir.

8. Fill the coolant reservoir to the MAX mark (A) with Acura Long Life Antifreeze/Coolant Type 2 (P/N

2007 Acura RL

2005-08 ENGINE Cooling System - RL

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OL999-9011A).

Fig. 11: Identifying Coolant Reservoir Coolant Level Marks
Courtesy of AMERICAN HONDA MOTOR CO., INC.

9. Pour Acura Long Life Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck.

Engine Coolant Capacities (Including the reserve tank capacity of 0.58 L (0.153 US gal)):

After Coolant Change: 6.0 L (1.59 US gal)

After Engine Overhaul: 8.6 L (2.27 US gal)

Fig. 12: Pouring Acura Long Life Antifreeze/Coolant Type 2 Into Radiator
Courtesy of AMERICAN HONDA MOTOR CO., INC.

10. Install the radiator cap loosely.

NOTE:



Always use Acura Long Life Antifreeze/Coolant Type 2 (P/N
OL999-9011A). Using a non-Acura coolant can result in corrosion,
causing the cooling system to malfunction or fail.



Acura Long Life Antifreeze/Coolant Type 2 is a mixture of 50%
antifreeze and 50% water. Do not add water.

2007 Acura RL

2005-08 ENGINE Cooling System - RL

Friday, June 05, 2009 3:11:22 PM

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