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Removal and installation of the main brake cylinder

Details of installation of the GTZ (for example, models with AT, version 1)

Details of installation of the GTZ (for example, models with AT, version 2)

Removing / installing the brake booster

Removing / installing the brake booster

21 - Hoses	28 - Bracket

PERFORMANCE ORDER

Illustrative material on the procedure for removal / installation of the brake booster is shown in the illustrations, which include all the links in the text, unless otherwise indicated. Open the hood and fix it in an upright position. Remove the trim panel of the power unit and the cover mounting fuse / relay box. Disconnect the electrical wiring from the tank GTZ (10). Disconnect vacuum line (8) of the brake booster (16). On diesel models, release the latches on the bulkhead of the vacuum line (8a), as well as an auxiliary line. Disconnect from the vacuum pump (24), hose (27). Release the hose (21) from the bracket (28). Separate hoses from mounting fuse / relay box and take out the engine. Preliminary having marked, disconnect the brake lines from the GTZ (5), - immediately plug the open ends of choke sockets. With the appropriate equipment, disconnect the wiring from the sensors 1 and 2 brake pressure ESP (B4 / B34 and 1/2), - release the tabs on the bottom side of the connector. Give the self-locking nuts (19) securing the GTZ (1), - the nuts must be replaced without fail. At a corresponding complete set remove thermofilter (1b). At a corresponding complete set remove the engine compartment bulkhead anti-theft alarm siren. Pull horizontally and remove the GTZ with the brake servo unit and transfer it to the workbench. Check cylinder for signs of leakage from the back side of the primary piston, if necessary, replace the assembly. On models with Manual transmission disconnect the hose from the tank GTZ operator clutch (10b), - immediately plug the open end of the choke connector. Pump out of the reservoir (10), brake fluid, then pulling vertically, remove it from the assembly of the GTZ (1). Check the condition of the sealing seat bushing (9), if necessary, replace. Installation is performed in reverse order - do not forget to replace the O-ring (1a) and self-locking nuts of the cylinder. In summary pump over brake system (see. Section Bleeding brake system).