Ford 1W7Z-8592-AB
Thermostat Housing, Upper

The procedure to service thermostat housing begins with shutdown of the fire suppression system if present along with cooling system draining. The installation requires two bolts on the coolant outlet adapter and hose which need removal followed by storage until reinstallation where you should torque them to 25 Nm (18 ft. lbs.). The service predecessor involves extracting both the coolant thermostat and the O-ring seal from the intake manifold. Check the O-ring seal before installing a new replacement if replacement is needed. It is essential to depower the fire suppression system if present before installing new components and then repower the system.Closure ends with filling and bleeding the cooling system to achieve proper operation.

You must disconnect the battery ground cable together with draining the engine cooling system when servicing the thermostat housing of a 4.0L SOHC engine. You need to disconnect the electrical connector attached to the Engine Coolant Temperature (ECT) sensor before removing the clamp holding the upper radiator hose as well as the heater hose. The bypass hose clamp should be released before lowering the clamp down the hose. The housing requires removal after you detach the thermostat housing bolts. Stepping into reinstallation requires bolt tightening until it reaches 12 Nm (9 ft. lbs.). You should check the thermostat housing O-ring while also installing a replacement if it needs replacement. You need to follow the opposite steps for finishing the installation.

Service of the thermostat along with the housing requires first draining the cooling system of a 4.0L SOHC engine. Start by draining the engine cooling system then proceed to remove components in the stated sequence but follow only the procedures for each component independently. Begin the installation procedure by doing the opposite of removal steps. The installation process requires filling and bleeding of the system. Examine the condition of the thermostat housing gasket during installation because a new gasket will be required when damage is present. The same process should be followed for installing the thermostat housing cover where the gasket must be examined for damage and a new one used when necessary.

The procedure to service thermostat housing begins with shutdown of the fire suppression system if present along with cooling system draining. The installation requires two bolts on the coolant outlet adapter and hose which need removal followed by storage until reinstallation where you should torque them to 25 Nm (18 ft. lbs.). The service predecessor involves extracting both the coolant thermostat and the O-ring seal from the intake manifold. Check the O-ring seal before installing a new replacement if replacement is needed. It is essential to depower the fire suppression system if present before installing new components and then repower the system.Closure ends with filling and bleeding the cooling system to achieve proper operation.

A proper start to servicing the thermostat housing requires draining the cooling system. Then work to disconnect the two bolts that secure the coolant outlet adapter and its hose before setting them aside. During reinstallation secure the two bolts at 25 Nm tension strength (18 ft. lbs.). First you must remove the O-ring seal together with the coolant thermostat from the intake manifold before checking the O-ring seal for replacement with a new unit. You will reach installation completion by undoing the removal steps before you refill and perform a cooling system bleed operation.