Removal and Installation
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(ref-255244) .
- Disconnect the battery ground cable. For additional information, refer to «BATTERY DISCONNECT»(ref-255287-S17788743492007053000000) .
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Disconnect the block heater electrical connector and position aside.
- Remove the block heater. To install, tighten to 21 N.m (15 lb-ft).
- To install, reverse the removal procedure.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
Scheme 3
Scheme 4
- For additional information, refer to the appropriate procedure.
Removal
- Remove the thermostat housing. For additional information, refer to «THERMOSTAT HOUSING»(ref-255255-S12488685572007053000000) and «THERMOSTAT AND THERMOSTAT HOUSING - EXPLODED VIEW»(ref-255255-S23530290862007053000000) .
- Remove the 3 thermostat housing bolts and separate the upper and lower thermostat housing.
- Remove the thermostat. Remove the O-ring seal and discard. Remove the thermostat.
Installation
- Align the thermostat bridge with the alignment marks and install it in the upper housing.
- Lubricate a new O-ring seal with clean engine coolant and install it in the upper housing.
- Install the lower thermostat housing and the 3 bolts. Tighten to 10 N.m (89 lb-in).
- Install the thermostat housing. For additional information, refer to «THERMOSTAT AND THERMOSTAT HOUSING - EXPLODED VIEW»(ref-255255-S23530290862007053000000) and «THERMOSTAT HOUSING»(ref-255255-S12488685572007053000000) .
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Remove the air cleaner assembly. For additional information, refer to «REMOVAL AND INSTALLATION»(ref-255254-S23832507712007053000000) .
- Disconnect the 2 thermostat housing coolant hoses and position aside.
- Disconnect the upper radiator-to-thermostat housing hose and position aside.
- Disconnect the bypass tube-to-thermostat housing hose and position aside.
- Disconnect the heater hose from the thermostat housing and position aside.
- Disconnect the lower radiator-to-thermostat housing hose and position aside.
- Remove the 2 bolts and the thermostat housing. Discard the O-ring seal. To install, tighten to 10 N.m (89 lb-in).
- To install, reverse the removal procedure. Install a new O-ring on the thermostat housing and lubricate with clean engine coolant.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
Scheme 5
Scheme 6
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Remove the air cleaner assembly. For additional information, refer to «REMOVAL AND INSTALLATION»(ref-255254-S23832507712007053000000) .
- Disconnect the thermostat housing-to-bypass tube hose and position aside.
- Remove the 2 thermostat housing bolts and position aside the thermostat housing. Discard the O-ring seal. To install, tighten to 10 N.m (89 lb-in).
- Remove the 4 roll restrictor bracket bolts and the roll restrictor bracket. To install, tighten to 55 N.m (41 lb-ft).
- Disconnect the bypass tube hose and position aside.
- Disconnect the bypass tube electrical connector.
- Remove the 2 bolts and the coolant bypass tube. Remove and discard the O-ring seal and gasket. To install, tighten to 10 N.m (89 lb-in).
- To install, reverse the removal procedure.
- Clean the sealing surfaces and install a new gasket and O-ring seals.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Remove the air cleaner assembly. For additional information, refer to «REMOVAL AND INSTALLATION»(ref-255254-S23832507712007053000000) .
- Disconnect the thermostat housing-to-bypass tube hose and position aside. To install, tighten to 5 N.m (44 lb-in).
- Remove the 2 thermostat housing bolts and position aside the thermostat housing. Discard the O-ring seal. To install, tighten to 10 N.m (89 lb-in).
- Disconnect the coolant pump hose and position aside.
- Remove the 4 coolant pump bolts and the coolant pump. To install, tighten in the following sequence: Tighten the coolant pump center bolt to 4 N.m (35 lb-in). Loosely install the 3 coolant pump outer bolts. Tighten the coolant pump center bolt to 25 N.m (18 lb-ft). Tighten the 3 coolant pump outer bolts to 10 N.m (89 lb-in).
- To install, reverse the removal procedure. Install a new sealing washer on the center coolant pump bolt. Install a new O-ring seal on the thermostat housing and lubricate with clean engine coolant.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
Scheme 7
Scheme 8
- Drain the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
- Remove the air cleaner assembly. For additional information, refer to «REMOVAL AND INSTALLATION»(ref-255254-S23832507712007053000000) .
- Remove the cooling fan motor and shroud. For additional information, refer to «COOLING FAN MOTOR AND SHROUD»(ref-255255-S00228578012007053000000) .
- Remove the front grille. For additional information, refer to «REMOVAL AND INSTALLATION»(ref-255290-S39122392182007053000000) FIVE HUNDRED, MONTEGO or «REMOVAL AND INSTALLATION»(ref-255290-S35093747792007053000000) FREESTYLE .
- Disconnect the upper radiator hose and position aside.
- Disconnect the lower radiator hose and position aside.
- Disconnect the horn assembly electrical connector.
- Remove the horn assembly bolt and the horn assembly. To install, tighten to 10 N.m (89 lb-in).
- Remove the 2 A/C condenser retaining bolts and position aside the A/C condenser. To install, tighten to 6 N.m (53 lb-in).
- Remove the 2 radiator support bracket bolts. To install, tighten to 6 N.m (53 lb-in).
- Remove the 2 radiator support brackets and position the radiator forward.
- Remove the transmission cooler bracket bolt. To install, tighten to 6 N.m (53 lb-in).
- Lift the transmission cooler off the retainers and position aside.
- Remove the radiator.
- To install, reverse the removal procedure.
- Fill and bleed the cooling system. For additional information, refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) .
Scheme 9
- Disconnect the battery ground cable. For additional information, refer to «BATTERY DISCONNECT»(ref-255287-S17788743492007053000000) .
- Disconnect the 2 coolant hose retainers from the fan shroud and position aside.
- Disconnect the cooling fan motor electrical connector.
- Remove the 2 cooling fan motor and shroud bolts and release the cooling fan motor and shroud from the lower brackets. To install, tighten to 6 N.m (53 lb-in).
- To install, reverse the removal procedure.
Scheme 10
- 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.
- Using hose clamps pliers, clamp the lower degas bottle hose.
- Using a suitable suction device, siphon the coolant from the degas bottle.
- Disconnect the upper degas bottle hose and position aside.
- Disconnect the lower degas bottle hose and position aside.
- Remove the 2 degas bottle bolts and position aside to access the electrical connector. To install, tighten to 9 N.m (80 lb-in).
- Disconnect the degas bottle electrical connector and remove the degas bottle.
- To install, reverse the removal procedure.
- Fill the degas bottle. refer to «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-255255-S00333417942007053000000) for the recommended coolant mixture and fill level.