Removal And Installation

REMOVAL

WARNING:

Do not remove or loosen the coolant pressure cap, cylinder block drain plugs, or the draincock when the system is hot and under pressure because serious burns from the coolant can occur.

CAUTION:

The Thermostat and housing is serviced as an assembly. Do not remove the thermostat from the housing. Damage to the thermostat may occur.

Remove the engine cover. Refer to COVER, ENGINE, REMOVAL AND INSTALLATION .
Remove the battery and battery tray. Refer to TRAY, BATTERY, REMOVAL AND INSTALLATION .
Remove the belly pan. Refer to BELLY PAN, REMOVAL AND INSTALLATION or BELLY PAN, SIDE, REMOVAL AND INSTALLATION .
Drain the cooling system. Refer to STANDARD PROCEDURE .

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Loosen the band clamp (1a) and remove the degassing hose (1b).

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Loosen the band clamp (1a) and remove the radiator hose (1b).

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Loosen the band clamp (1a) and remove the heater core hose (1b).

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Unlock and disconnect the engine water heating coil wire harness connector (1).

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Remove the bolts (1) from the thermostat housing.

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Unlock and disconnect the Engine Coolant Temperature (ECT) wire harness connector (1b).
Disengage the wire harness (1c) from the clip on the thermostat.

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Remove the thermostat (1a) and DISCARD the seal (1b).

INSTALLATION

Clean the mating surfaces on the engine block and thermostat.

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Install a NEW seal (1) onto the thermostat.
Connect and lock the engine coolant temperature (ECT) wire harness connector.
Engage the wire harness in the clip on the thermostat.

Fig 1: Thermostat Bolts Tightening Sequence
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Install the thermostat and using the sequence shown in illustration tighten the four bolts to the proper torque specifications. Refer to TECHNICAL SPECIFICATIONS .
Connect and lock the engine water heating coil wire harness connector.
Install the heater core hose and tighten the band clamp.
Install the radiator hose and tighten the band clamp.
Install the degassing hose and tighten the band clamp.
Install the battery tray and battery. Refer to TRAY, BATTERY, REMOVAL AND INSTALLATION .
Install the engine cover. Refer to COVER, ENGINE, REMOVAL AND INSTALLATION .
Fill the cooling system. Refer to STANDARD PROCEDURE .
Install the belly pan. Refer to BELLY PAN, REMOVAL AND INSTALLATION or BELLY PAN, SIDE, REMOVAL AND INSTALLATION .