Removal and installation camshaft sprockets/wheels (Opel Corsa C)

26. On engines with a timing belt drive, it is necessary to first remove the toothed belt (see Section 8). On engines with a timing chain drive, the bolts securing the sprockets can be loosened with the chain on, and when performing some operations this is simply necessary.

27. First of all, the exhaust camshaft sprocket/wheel is usually removed. Depending on the design, the sprocket/wheel can be removed in one of two ways. If the front part of the camshaft is made in the form of a hexagon, the sprocket/wheel mounting bolt must be unscrewed using a socket head, holding the shaft from turning with a second open-end wrench (see accompanying illustration) If such a hexagon is missing, or in some cases access to it is closed, removal is carried out using special devices installed in the holes of the wheel/sprocket (see below).



28. Install devices KM-6347 and KM-956-1 (see accompanying illustration) so that the grooves of the KM-6347 device engage with the wheel and, turning the device clockwise, tighten the 2 mounting bolts. Use an assistant to hold the wheel/sprocket from turning using the installed devices, unscrew the mounting bolt and remove the wheel/sprocket. Remove the device. Repeat the procedure to remove the other wheel/sprocket (when properly executed).





29. When performing assembly operations, install the wheels/sprockets one by one into their places - tighten their mounting bolts manually.

Note: On some models the intake and exhaust camshaft gears have different designs - please pay attention.

Then, holding the wheels/sprockets from turning (see above), tighten the mounting bolts to the required torque. At the same time, the installation marks of the wheel and camshaft should match - they are usually made in the form of guide pins or keys.