Toyota
Ford Kuga
 Service Manual
Engine- 2.5L Duratec (147kW/200PS) - VI5 » Engine (Overview)
Cylinder head

The cylinder head consists of two parts. The top half of the cylinder head consists of a valve cover with integral camshaft bearing caps.

Cylinder head

Item Description
1 Camshaft bearings
2 Valve cover
3 Cylinder head
4 Spark plug well sealing ring
5 Exhaust camshaft
6 intake camshaft

A conventional cylinder head gasket is installed between the cylinder head and the cylinder block.

The gaskets between the other mating faces are fluid gaskets.

Camshafts

Camshafts

Item Description
1 Exhaust camshaft
2 intake camshaft
3 Valve cover
4 CMP Sensor - intake camshaft
5 Intake camshaft reference mark
6 Exhaust camshaft reference mark
7 CMP Sensor - exhaust camshaft

CAUTION: Before removal, mark the camshafts as the intake and exhaust camshafts can be mixed up.

A reference mark for the CMP sensor is machined into each camshaft. When the camshafts are set precisely to the timing marks, the machined mark on the exhaust camshaft is located roughly at the 5 o'clock position and the machined mark on the intake camshaft is located at 8 o'clock.

When changing the toothed belts it is not necessary to dismantle the camshaft adjustment units. A special tool prevents the VCT control units from turning during the adjustment process by locking the two VCT control units to one another.

A further special tool is needed to fix the camshafts in the adjustment position. The special tool engages in corresponding recesses for the reference marks on the CMP sensors.

Each camshaft is fixed in place using four bearing caps and the bearing cap VVT. The bearing caps must not be changed around and must always be fitted in their original positions.

The VCT control units for the intake and exhaust camshafts are moved into the locked base position when the engine is stopped through the engagement of a spring-loaded locking pin. The movement to the locked base position is assisted by the tensile force of the timing belt for the intake VCT control unit. With the exhaust VCT control unit, a spring inside the control unit additionally assists in reaching the locked base position. The intake VCT control unit is in the "retarded timing" position and the exhaust VCT control unit is in the "advanced timing" position when in the locked base position. The lock is hydraulically released when the engine is started depending on the oil pressure.

The mechanical valve tappets are maintenance free.

Timing marks

Timing marks

Item Description
1 Exhaust camshaft pulley timing mark
2 Engine front cover with timing marks
3 Intake camshaft pulley timing mark
4 Intake camshaft drive gear
5 Exhaust camshaft drive gear
6 Crankshaft timing belt pulley timing mark
7 Crankshaft timing belt pulley
8 Crankshaft

The front engine cover must always be fitted when checking and adjusting the valve timing or timing belt tension, as the timing marks for both camshaft pulleys are provided on its front end.

Correct timing belt tension is ensured by the automatic timing belt tensioner.

No direction of movement is specified when using a new timing belt. If, however, the old timing belt is reused, the direction of movement must be marked prior to removal.

Once the timing belt has been correctly tensioned, the engine must be rotated by hand two turns clockwise at the crankshaft in order to allow a subsequent check of the timing belt tension and adjustment.

    More about «Engine (Overview)»:

    General

    Cylinder head

    Cylinder block

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