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Высокие технологии Wrap the chain around the sprocket and measure the diameter
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With a spanner on the hexagonal section, slacken the sprocket bolt

Refitting

25 Align the locating hole on the VVT-i unit/ sprocket with the locating pin on the intake camshaft, then hold the camshaft in position with a spanner on the hexagonal section, and attempt to rotate the sprocket anti-clockwise whilst gently pushing it against the camshaft. This is to ensure it's locked in the

'retarded' position. If the VVT-i unit is already in the 'retarded' position (as it should be) the sprocket will not move. If it's not, the sprocket will rotate anti-clockwise slightly until the locating pin on the end of the camshaft aligns with a further locating slot inside the VVT-i assembly (see illustration). Fit the sprocket retaining bolt and tighten it to the specified torque, using a spanner on the hexagonal section of the camshaft to prevent it from rotating.

26 Align the locating hole in the exhaust sprocket with the locating pin on the exhaust camshaft, then fit the bolt and tighten it to the specified torque, using a spanner on the camshaft hexagonal section to prevent it

from rotating. Note that the sprocket must be fitted with timing mark facing outwards (see illustrations).

27 Check that the camshaft sprockets are aligned (see illustration). If necessary, using