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Hyundai Equus: Radiator Repair procedures - Cooling System - Engine Mechanical System - Hyundai Equus VI 2009-2026 Service ManualHyundai Equus: Radiator Repair procedures

Second generation VI (2009–2026) / Hyundai Equus VI 2009-2026 Service Manual / Engine Mechanical System / Cooling System / Radiator Repair procedures

Inspection
Radiator Cap Testing
1.
Remove the radiator cap, wet its seal with engine coolant, then install it to pressure tester.

2.
Apply a pressure of 93 ~ 123kPa (0.95 ~ 1.25kgf/cmx, 14 ~ 19psi).
3.
Check for a drop in pressure.
4.
If the pressure drops, replace the cap.
Radiator Leakage Test
1.
Wait until engine is cool, then carefully remove the radiator cap and fill the radiator with engine coolant, then install a pressure tester (A) on it.

2.
Apply a pressure of 93 ~ 123kPa (0.95 ~ 1.25kgf/cmx, 14 ~ 19psi).
3.
Inspect for engine coolant leaks and a drop in pressure.
4.
If the pressure drops, check hoses, the radiator and the water pump for leakage. If there is no leakage, inspect the heater core, the cylinder block and the cylinder head.
5.
Remove the tester and reinstall the radiator cap.
   
Check for engine oil in coolant and/or coolant in engine oil.
Removal
   
System is under high pressure when the engine is hot. To avoid danger of releasing scalding engine coolant, remove the cap only when the engine is cool.
1.
Disconnect the negative terminal (A) from the battery.
Tightening torque :
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)

2.
Remove the engine room cover (A), engine cover (B) and radiator grill upper cover (C).

3.
Loosen the drain plug (A) and drain the engine coolant. Remove the radiator cap (B) to speed draining.
   
Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator.

4.
Remove the air cleaner assembly.
(1)
Remove the air duct (A).
(2)
Disconnect the breather hose (B).
(3)
Loosen the clamp (C) and then disconnect the air intake hose from the throttle body.
Tightening torque :
2.9 ~ 4.9 N.m (0.3 ~ 0.5 kgf.m, 2.2 ~ 3.6 lb-ft)
(4)
Remove the chamber air cleaner (D) and air cleaner assembly (E).
Tightening torque
Air cleaner assembly bolts:
7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

5.
Disconnect the radiator upper hose (A) and lower hose (B).

6.
Disconnect the ATF cooler hoses (A).

7.
Disconnect the fan motor connector (A). If necessary, loosen the fuse box fixing bolt for your convenience.

8.
Remove the radiator mounting brackets (A).
9.
Remove the radiator & condenser mounting bolts (B).
Tightening torque :
7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

10.
Remove the radiator & cooling fan assembly from the vehicle.
11.
Installation is reverse order of removal.
Fill the radiator with coolant and check for leaks.
    Radiator Components and Components Location
    Components 1. Cooling fan assembly2. Radiator lower hose3. Radiator upper hose4. Coolant reservoir tank5. Radiator6. Mounting insulator7. Mounting bracket ...

    Water pump Components and Components Location
    Components 1. Drive belt2. Drive belt tensioner3. Drive belt idler4. Water pump pulley5. Water pump6. Water pump gasket ...

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