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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine Cooling System - (Hybrid)) >> Removal And Installation >> Thermostat Housing >> Removal and Installation

Removal and Installation

WARNING: This page is about a different variant/trim than selected.
NOTE: The thermostat and thermostat housing are serviced as an assembly.
  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .
  2. Drain the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .
  3. Remove the accessory drive belt tensioner. For additional information, refer to ACCESSORY DRIVE - HYBRID .
  4. NOTE: The view of the thermostat housing bolts is obstructed by A/C and engine components. However, the bolts can be removed using 1/4-in drive hand tools.
  5. Remove the 3 bolts and reposition the thermostat housing to gain access to the hose clamps.
    • Remove and discard the gasket.
    • To install, tighten to 10 Nm (89 lb-in).
      Fig 1: Locating Thermostat Housing Bolts
      G06096622Courtesy of FORD MOTOR CO.
  6. Disconnect the heater hose at the thermostat housing.
  7. Disconnect the lower radiator hose at the thermostat housing.
  8. To install, reverse the removal procedure.
    • Install a new gasket.
  9. Fill and bleed the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .