Honda Civic Service Manual: Radiator Removal and Installation (R18A9)

Honda Civic Service Manual / Powertrain / Engine / Engine Cooling / Radiator / Radiator Removal and Installation (R18A9)

1.	Radiator Cap

Wait until the engine is cool, then carefully remove the radiator cap.

2.	Vehicle Lift

Raise the vehicle on a lift, and make sure it is securely supported.

3.	Splash Shield

Remove the splash shield (A).

4.	Radiator Coolant - Replacement

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

5.	Front Grille Cover

Remove the front grille cover (A).

If necessary, remove the front bumper upper duct (A).

6.	Radiator Mounting Bracket, Upper Both

Remove the radiator mount upper brackets/cushions (A), and the A/C condenser upper mount brackets (B).

7.	Bulkhead - Removal

Disconnect the connectors (A).

Remove the harness clamps (B).

Remove the bulkhead (A).

8.	Radiator Assembly (Natural Gas Model)

Disconnect the upper radiator hose.

Disconnect the lower radiator hose (A).

Disconnect the connector (B).

Remove the harness clamp (C).

Pull up the radiator assembly.

9.	Coolant Reservoir

Remove the coolant reservoir.

10.	A/C Condenser Fan Shroud Assembly

Remove the A/C condenser fan shroud assembly.

11.	Radiator Fan Shroud Assembly

Remove the radiator fan shroud assembly.

12.	ECT Sensor 2 (for Radiator After Removing)

Remove ECT sensor 2.

1.	ECT Sensor 2 (for Radiator After Removing)

Install ECT sensor 2.

2.	Radiator Fan Shroud Assembly

Install the radiator fan shroud assembly.

3.	A/C Condenser Fan Shroud Assembly

x.nmm

Install the A/C condenser fan shroud assembly.

4.	Coolant Reservoir

Install the coolant reservoir.

5.	Radiator Assembly (Natural Gas Model)

Install the radiator.

Connect the upper radiator hose.

Install the clamp (A).

Connect the connector (B).

Connect the lower radiator hose (C).

6.	Bulkhead - Installation

Install the bulkhead (A).

Install the harness clamps (A).

Connect the connectors (B).

7.	Radiator Mounting Bracket, Upper Both

Install the radiator mount upper bracket/cushion (A), and the brackets (B).

8.	Front Grille Cover

Install the front bumper upper duct (A).

Install the front grille cover (A).

9.	Radiator Coolant - Replacement (Natural Gas Model)

Follow the chart and pour coolant into the radiator up to the base of the filler neck.

NOTE:

Use Honda Long Life Antifreeze/Coolant Type 2, and if necessary add Honda Extreme Cold Weather Antifreeze/Coolant Type 2 (concentrate). Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail.

Honda Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Honda Extreme Cold Weather Antifreeze/Coolant Type 2 is a 100% concentration coolant. Do not add water to either coolant.

If the vehicle is regularly driven in very low temperatures (below -22 °F ( -30 °C)), a 60 % concentration of coolant should be used.

Operation	Vehicle Usage (Desired Mixture)	Current Mixture	Coolant Drain	Add Amount of Honda Extreme Cold Weather Antifreeze/Coolant Type 2 (100% concentrate)	Then add Honda Long Life Antifreeze/Coolant Type 2 (50/50)
Coolant Change	Normal Area (50/50)	50/50 60/40 unknown	Drain radiator, engine block, and reservoir	None	Top off the cooling system
	Very Cold Area (60/40)	50/50 unknown	Drain radiator, engine block, and reservoir	About 1.3 L (44 fl oz)
	Very Cold Area (60/40)	60/40	Drain radiator, engine block, and reservoir	About 1.1 L (37 fl oz)
Engine Overhaul	Normal Area (50/50)	-	-	None
Engine Overhaul	Very Cold Area (60/40)	-	-	About 1.1 L (37 fl oz)
Coolant Winterizing	Very Cold Area (60/40)	50/50	Drain about 2.0 L (68 fl oz) from radiator	About 1.1 L (37 fl oz)
Coolant Winterizing	Very Cold Area (60/40)	unknown*	Drain radiator, engine block, and reservoir	About 1.1 L (37 fl oz)

*: When you want to winterize the coolant with the minimum amount of coolant change but the current coolant concentration in the vehicle is unknown, you must drain all coolant from the cooling system.

Engine Coolant Capacities (Including the coolant reservoir capacity of 0.475 L (0.1255 US gal))

At Coolant Change	5.50 L (1.453 US gal)
After Engine Overhaul	6.51 L (1.720 US gal)

10.	Splash Shield

Install the splash shield (A).

11.	Maintenance Minder Reset

After doing all procedures, select the individual maintenance item you wish to reset with the HDS..

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Honda Civic Service Manual: Radiator Removal and Installation (R18A9)

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