Removal and installation air intake tract components (Opel Astra H)

Removal

1. The general connection diagram of the air supply system intake tract components is shown in the accompanying illustration. Basically, the fastening of pipelines and hoses is carried out using clamps of various types. In some cases, bolted connections are used for this purpose.



2. The most important element of the air supply system is the air cleaner. When performing maintenance work, it is sufficient to remove only the top cover (see Chapter 1), but when performing many repairs and replacing other elements of the engine compartment, it is necessary to dismantle the entire air cleaner assembly.

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3. On the Z16XEP engine, disconnect the air mass sensor wiring connector (see accompanying illustration), to do this, slide the yellow locking clip back and press the retainer, unscrew the mounting bolt, loosen the clamp and disconnect the intake manifold from the throttle body (or, depending on the type and brand of engine (see below), from the intake sleeve).



4. For other engines, you need to perform a few additional steps:

• Z14XEP/Z18XE Engines: Remove the PCV hose by first loosening the clamp and sliding it back along the hose;
• Z14XEP/Z22YH Engines: Disconnect the fuel tank vent hose;
• Z14XEP Engines: Disconnect the lower air cleaner rubber support and remove the front connecting sleeve;
• Z13DTH Engines: Disconnect 2 vacuum hoses;
• Z19DT(H)/Z17DT(L/H)/ Z13DTH engines: Disconnect the lower water drain tube from the air cleaner.

5. Remove the air cleaner with the intake manifold.

Installation

6. Installation is performed in the reverse order of dismantling the components. Make sure that the air duct clamps are tightened securely. On 2.0 L diesel engines, do not forget to replace the sealing ring at the junction of the metal sleeve with the turbocharger (if the sleeve was disconnected).