Acura TSX / Honda Accord CL. Manual - part 397

Fig. 19: Removing The Upper Radiator Hose, Heater Hose, Water Bypass Hose, And Connecting 
Pipe Mounting Bolt 

4. Remove the water outlet (A). 

 

2004 Acura TSX 

2004 ENGINES Cooling System - TSX

  

 

Fig. 20: Removing The Water Outlet 

5. Install the water outlet with a new gasket (B).  

6. Install the other parts in the reverse order of removal.  

7. Refill the radiator with engine coolant, and bleed air from the cooling system with the heater valve open 

(see COOLANT REPLACEMENT ).  

LOWER RADIATOR HOSE REMOVAL AND INSTALLATION 

REMOVAL 

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

2. Clean any dirt off the quick connector (A), radiator, and lower radiator hose. 

 

2004 Acura TSX 

2004 ENGINES Cooling System - TSX

  

 

Fig. 21: Removing Lower Radiator Hose 

3. Pull out the lock (B) by hand, then wiggle the quick connector, and remove it from the radiator. Do not 

use any tools to remove the quick connector.  

4. Remove the clamp (C) from both ends of the lower radiator hose and remove them from the thermostat 

and quick connector.  

INSTALLATION 

1. Check the quick connector (A) and set ring (B) for cracks or damage. If the connector and/or set ring are 

cracked or damaged, replace the connector. 

 

2004 Acura TSX 

2004 ENGINES Cooling System - TSX

  

 

Fig. 22: Checking The Quick Connector And Set Ring For Cracks Or Damage 

2. Make sure the set ring is in place inside the quick connector. If the set ring is off the connector, replace 

the quick connector.  

3. Replace the O-ring (C) in the quick connector.  

4. Check the lock (D). If the lock is damaged or deformed, replace it. When installing the new lock to the 

connector, slide it straight down along the groove.  

5. Install a new lower radiator hose on the quick connector, and install the clamp.  

6. Clean the connecting surface of the radiator (E), then apply clean engine coolant around the connecting 

surface.  

7. Push down the lock (A), then push the quick connector (B) onto the radiator until you hear it click. 

 

2004 Acura TSX 

2004 ENGINES Cooling System - TSX