Engine Cooling - (Except Hybrid): Removal & Installation Mercury Mariner II

REMOVAL AND INSTALLATION

All engines

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Disconnect the block heater electrical connector.
4. Remove the block heater. To install, tighten to 21 Nm (15 lb-ft).
5. Remove the block heater. To install, tighten to 25 Nm (18 lb-ft).
6. To install, reverse the removal procedure.
7. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the accessory drive belt. For additional information, refer to «ACCESSORY DRIVE - 2.3L»(ref-292197) article.
4. Disconnect the heater hose at the thermostat housing.
5. Disconnect the lower radiator hose at the thermostat housing.
6. Remove the 3 bolts, thermostat housing and gasket. To install, tighten to 10 Nm (89 lb-in).
7. To install, reverse the removal procedure. Clean and inspect the gasket, install a new gasket if necessary.
8. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

Thermostat - 3.0L (4V)

Material

Scheme 5

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the air cleaner outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING - 3.0L (4V)»(ref-292216) article.
4. Disconnect the lower radiator hose from the thermostat housing.
5. Remove the 3 bolts, thermostat housing cover, O-ring seal and thermostat. To install, tighten to 10 Nm (89 lb-in).
6. To install, reverse the removal procedure. Clean and inspect the O-ring seal. Install a new seal if necessary.
7. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

Scheme 6

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the air cleaner outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING - 3.0L (4V)»(ref-292216) article.
4. Disconnect the upper radiator hose from the thermostat housing.
5. Disconnect the lower radiator hose from the thermostat housing.
6. Disconnect the heater hose from the thermostat housing.
7. Reposition the 2 thermostat housing-to-engine clamps. Remove the thermostat housing.
8. To install, reverse the removal procedure.
9. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

Scheme 7

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the intake manifold. For additional information, refer to «ENGINE - 2.3L»(ref-292207) article.
4. Disconnect and remove the coolant bypass tube.
5. To install, reverse the removal procedure.
6. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the thermostat housing. For additional information, refer to «Thermostat Housing - 3.0L (4V)»(ref-292200-S13976692812008073100000) .
4. Remove the bypass tube-to-thermostat housing hose.
5. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
6. Remove the bolt, stud bolt and bypass tube. To install, tighten to 10 Nm (89 lb-in).
7. Remove and inspect the O-ring seals, install new seals if necessary.
8. To install, reverse the removal procedure. Lubricate the O-ring seals with clean engine coolant.
9. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the accessory drive belt. For additional information, refer to «ACCESSORY DRIVE - 2.3L»(ref-292197) article.
4. Remove the 3 bolts and the coolant pump pulley. To install, tighten to 20 Nm (15 lb-ft).
5. Remove the 3 bolts and the coolant pump. Remove and discard the O-ring seal. To install, tighten to 10 Nm (89 lb-in).
6. To install, reverse the removal procedure. Lubricate the new O-ring seal with clean engine coolant.
7. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

REMOVAL

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Disconnect the crankcase vent tube and position it aside.
4. Remove the coolant pump belt. For additional information, refer to «ACCESSORY DRIVE - 3.0L (4V)»(ref-292198) article.
5. Using the special tools, remove the coolant pump pulley.
6. Disconnect the heater hose from the coolant pump.
7. Disconnect the coolant pump-to-engine hose and position aside.
8. Remove the 3 bolts from the coolant pump assembly.
9. Reposition the coolant pump-to-thermostat housing hose clamp and remove the coolant pump and hose as an assembly.

INSTALLATION

1. Connect the coolant pump-to-thermostat housing hose and reposition the clamp.
2. Position the coolant pump assembly and install the 3 bolts. Tighten to 10 Nm (89 lb-in). Tighten the 3 bolts an additional 90 degrees.
3. Connect the coolant pump-to-engine hose and the heater hose.
4. Install the special tool on the camshaft as shown in the illustration. Adjust the collar on the special tool screw to get the best thread engagement in the rear of the camshaft.
5. Position the coolant pump pulley over the previously installed special tool and on the end of the camshaft. Install the special tools as shown in the illustration. Using the special tools, install the coolant pump pulley flush with the end of the camshaft.
6. Install the coolant pump belt. For additional information, refer to «ACCESSORY DRIVE - 3.0L (4V)»(ref-292198) article.
7. Connect the crankcase vent tube.
8. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

Scheme 8

All vehicles

1. With vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the front bumper cover. For additional information, refer to «BUMPERS»(ref-292171) article.
4. Remove the front impact severity sensor. For additional information, refer to «SUPPLEMENTAL RESTRAINT SYSTEM»(ref-292178) article.
5. Remove the 2 pin-type retainers.
6. Remove the 4 bolts and the 2 radiator brackets. To install, tighten to 10 Nm (89 lb-in).
7. Loosen the nut, remove the 2 bolts and position aside the hood latch. To install, tighten to 9 Nm (80 lb-in).
8. Remove the 2 wiring harness retainers from the front bumper bracket.
9. Remove the center support bolt. To install, tighten to 10 Nm (89 lb-in).
10. Disconnect the cooling fan resistor electrical connector.
11. Disconnect the coolant recovery hose from the radiator and position it aside.
12. Detach the lower degas bottle hose from the cooling fan motor and shroud.
13. Disconnect the cooling fan electrical connectors.
14. Remove the 2 cooling fan bolts and the cooling fan motor and shroud. To install, tighten to 8 Nm (71 lb-in).
15. To install, reverse the removal procedure.
16. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

Scheme 9

Scheme 10

1. With vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Remove the cooling fan motor and shroud. For additional information, refer to «Cooling Fan Motor and Shroud»(ref-292200-S21773007362008073100000) .
3. Disconnect the upper radiator hose from the radiator.
4. Disconnect the lower degas bottle-to-radiator hose from the radiator.
5. Disconnect the lower radiator hose from the radiator.
6. Remove the 2 A/C condenser-to-radiator bolts and position aside the A/C condenser from the radiator. To install, tighten to 8 Nm (71 lb-in).
7. Remove the radiator.
8. To install, reverse the removal procedure.

Scheme 11

Scheme 12

1. With vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(ref-292146) article.
2. Drain the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .
3. Remove the cooling fan motor and shroud. For additional information, refer to «Cooling Fan Motor and Shroud»(ref-292200-S21773007362008073100000) .
4. Disconnect the radiator-to-degas bottle hose and upper radiator hose from the radiator.
5. Disconnect the degas bottle-to-radiator hose from the radiator.
6. Disconnect the lower radiator hose from the radiator.
7. Remove the 2 A/C condenser-to-radiator bolts and position aside the A/C condenser from the radiator. To install, tighten to 8 Nm (71 lb-in).
8. Remove the radiator.
9. To install, reverse the removal procedure.
10. Fill and bleed the cooling system. For additional information, refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) .

Scheme 13

1. Release the pressure in the cooling system by slowly turning the pressure relief cap one half turn counterclockwise. When the pressure is released, remove the pressure relief cap.
2. Using hose clamp pliers, clamp the degas bottle-to-radiator hose.
3. Using a suitable suction device, siphon the coolant from the degas bottle.
4. Disconnect the radiator-to-degas bottle hose from the degas bottle.
5. Remove the 2 degas bottle nuts. To install, tighten to 6 Nm (53 lb-in).
6. Lift the degas bottle up and disconnect the degas bottle-to-radiator hose. Remove the degas bottle.
7. To install, reverse the removal procedure.
8. Fill the degas bottle. Refer to «Cooling System Draining, Filling and Bleeding»(ref-292200-S21453313042008073100000) for the recommended coolant mixture and fill level.