Ford Mustang Repair Manual 2005-2010

INSTALLATION
(Refer to illustrations 8.29, 8.30, 8.34, 8.35 and 8.37)

26. The mating surfaces of the cylinder heads and block must be perfectly clean when the heads are installed. Use a gasket scraper to remove all traces of carbon and old gasket material, then clean the mating surfaces with lacquer thinner or acetone. If there's oil on the mating surfaces when the cylinder heads are installed, the gaskets may not seal correctly and leaks may develop.
    
    When working on the engine block, cover the open areas of the engine with shop rags to keep debris out during repair and reassembly. Use a vacuum cleaner to remove any debris that falls into the cylinders.



27. Check the engine block and cylinder head mating surfaces for nicks, deep scratches and other damage.



28. Use a tap of the correct size to chase the threads in the cylinder head bolt holes. Dirt, corrosion, sealant and damaged threads will affect torque readings.



29. Make sure the new gaskets are on the correct cylinder banks, and located on the dowels in the block. They are not interchangeable (see illustration).



30. Carefully position the cylinder heads on the engine block without disturbing the gaskets. Install new cylinder head bolts and following the recommended sequence (see illustration), tighten the bolts. First, install the eight 12 mm bolts and tighten, in the order shown, to the torque listed in Step 1 and 2 of this Chapter's Specifications. Then install and tighten the two 8 mm bolts to the torque listed in Step 3 of this Chapter's Specifications.

REPLACEMENT

Warning: Wait until the engine is completely cool before beginning this procedure.

5. Disconnect the cable from the negative battery terminal (see Chapter 5, Section 1).



6. Drain the cooling system (see Chapter 1). If the coolant is relatively new and still in good condition, save it and reuse it.



7. Remove the air duct between the air cleaner housing and the throttle body (see Chapter 4).



8. On V6 models, follow the upper radiator hose to the engine to locate the thermostat housing. On V8 models, the thermostat housing is located in between the engine and the cooling fan in front of the power steering.



9. On V6 models, remove the hose from the housing by loosening the hose clamp. Squeeze the ends of the clamp together with hose clamp pliers (regular pliers will work also). If the radiator hose is stuck, grasp it near the end with a pair of adjustable pliers and twist it to break the seal, then pull it off. If the hose is old or if it has deteriorated, cut it off and install a new one.



10. If the outer surface of the thermostat housing cover, which mates with the hose, is corroded, pitted, or otherwise deteriorated, it might be damaged even more by hose removal. If it is, replace the thermostat housing cover.

• Introduction: Vehicle identification numbers; Buying parts; Maintenance techniques, and more.
• Tune-up and routine maintenance
• Engine and overhaul procedures
• 4.0L SOHC-2V V6 engine
• 4.6L DOHC-3V V8 engine
• Cooling, heating and air-conditioning systems
• Fuel and exhaust systems
• Engine electrical systems
• Emissions control systems
• 5-speed manual transmission
• 6-speed manual transmission
• 4-spee automatic transmission
• Clutch and drivetrain
• Brakes, ABS
• Suspension and steering systems
• Body
• Chassis electrical system
• Wiring diagrams