Engine cover — removal and installation (Opel Vectra C)

1. During vehicle operation, especially in areas with increased air dustiness and in the autumn-winter period, all units located in the engine compartment are exposed to increased contamination. Before performing maintenance work, it is imperative to clean the joints of mating surfaces, pipeline connectors and electrical wiring before disconnecting them.

2. Various elements and pipelines of its systems are located on top of the engine. Depending on the type and configuration of the engine, this may be a fuel distribution line, high-pressure pipes of the fuel system, an ignition module, various types of supply hoses, cable lines, etc., which is especially typical for diesel engines. These elements form a complex configuration and do not allow for a high-quality cleaning of the engine surface from dust and dirt, although these systems are the most sensitive to contamination. Despite the misconception of many, the cover not only gives the engine a more presentable appearance, but also serves to reduce the degree of contamination and prevents accidental damage to the pipelines. Almost all diesel and some gasoline engines are equipped with an upper protective and decorative cover - do not forget to install it in its regular place after completing the work

Z19DTH Engine

3. The engine cover is installed on spherical supports fixed to various elements of the engine assembly (see illustration). The tight fit is ensured by rubber sealing supports.

4. To remove the cover, simply pull it up with sufficient force - the rubber seals should remain on the cover, otherwise remove them manually and install them in the corresponding slots on the cover.

5. To install, align the mounting sockets with the rubber seals of the top cover with ball-shaped tips and press on the cover until it is fixed on the supports - the cover should fit tightly to the mating surfaces.

Z16XE, Z18XE and Z19DT engines

6. To remove the cover, you must first remove the oil filler cap. Unscrew the fastening screws (see illustration), lift the cover slightly by the rear edge and slide it horizontally forward (to the radiator), then disconnect from the front rubber holders. Install the oil filler caps in place.

7. Install the cover in reverse order.

Y20DTH and Y22DTR engines

8. Remove the 3 mounting screws (see illustration) engine cover, carefully pull the cover up and away from the engine.

9. Installation is carried out in reverse order.