V8 engines Ford F150

This Part 2 is devoted to in-vehicle repair procedures for the 5.0L Dual Overhead Camshaft (DOHC) engine. The 5.0L (four-cam) engine has an aluminum block and heads and four valves per cylinder. Information concerning engine removal and installation can be found in Chapter 2C.

These engines are an interference design. In the event the timing chain breaks, the pistons will contact the valves and cause damage.

Top Dead Center (TDC) for number one piston – locating
Valve covers – removal and installation
Intake manifold – removal and installation
Exhaust manifolds – removal and installation
Crankshaft pulley and front oil seal – removal and installation
Timing chain cover – removal and installation
Timing chains, tensioners and sprockets – removal, inspection and installation
Roller followers and valve lash adjusters – removal, inspection and installation
Variable Camshaft Timing (VCT) system – general information
Camshaft(s) – removal, inspection and installation
Cylinder heads – removal and installation
Oil pan – removal and installation
Oil pump – removal and installation
Flywheel/driveplate – removal and installation
Rear main oil seal – replacement
Engine mounts – check and replacement

1. Many major repair operations can be accomplished without removing the engine from the vehicle.

2. If possible, clean the engine compartment and the exterior of the engine with some type of pressure washer before any work is started. It will make the job easier and help keep dirt out of the internal areas of the engine.

3. If vacuum, exhaust, oil or coolant leaks develop, indicating a need for gasket or seal replacement, the repairs can generally be made with the engine in the vehicle. The intake and exhaust manifold gaskets, timing cover gasket, oil pan gasket, crankshaft oil seals and cylinder head gaskets are all accessible with the engine in place.

4. Exterior engine components, such as the intake and exhaust manifolds, the oil pan, the water pump, the starter motor, the alternator and the fuel system components can be removed for repair with the engine in place.

5. Since the cylinder heads can be removed without pulling the engine, valve component servicing can also be accomplished with the engine in the vehicle. Replacement of the timing chain and sprockets is also possible with the engine in the vehicle.

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