Removal and installation camshaft sprockets (Opel Vectra C)

Removal

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, as a rule, the exhaust camshaft wheel is removed. To remove the gear wheel, install the devices KM-6347 and KM-956-1 (see illustration) so that the grooves of the device KM-6347 engage with the wheel and, turning the device clockwise, tighten the 2 mounting bolts.

Note: If the front of the camshaft is hexagonal, you can remove the timing belt mounting bolt by holding the shaft with a wrench (see below).

28. Use an assistant to hold the wheel from turning with the installed tool, unscrew the wheel mounting bolt and remove the wheel. Remove the tool from the pulley. Repeat the procedure to remove the remaining (on the corresponding models) gear wheels.





29. To remove the sprockets (gears - on some models) the camshaft drive, it is necessary to unscrew the fastening bolt, hold the corresponding shaft from turning by the hexagonal part using a second key (see illustration).

Installation

30. Install the wheels/sprockets one by one into their places - tighten their mounting bolts by hand.

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. When installing, the timing marks on the wheel and camshaft must match - they are usually made in the form of guide pins or keys.