Service Manual — page 247 of 715

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COOLING SYSTEM 4-21
Thermostat
Thermostat Removal
• Drain:
   Coolant (see Coolant Change in the Periodic Mainte-
     nance chapter)
•   Remove:
     Throttle Body Assy (see Throttle Body Assy Removal in
     the Fuel System (DFI) chapter)
     Clamp [A]
•   Slide the clamp [B].
•   Disconnect:
     Water Hose [C]

• Remove:
   Thermostat Housing Bolts [A]
     Thermostat Housing Cover [B]
     Thermostat

Thermostat Installation
• Install the thermostat [A] in the housing so that the air
  bleeder hole [B] is on top.

• Replace    the O-ring [A] with a new one.
• Apply   grease to the O-ring, and install it.
• Install the thermostat housing cover.
                             NOTE
    ○Note that the thermostat does not move at the place
     when installing the thermostat housing cover.

• Apply  a non-permanent locking agent to the threads of
  the thermostat housing bolts.
• Tighten:
    Torque - Thermostat Housing Bolts: 5.9 N·m (0.60 kgf·m,
               52 in·lb)
• Fill the radiator with coolant (see Coolant Change in the
  Periodic Maintenance chapter).
• Install the removed parts (see appropriate chapters).