General description
1. When checking the condition of the tubes and/or hoses of the system, make sure that they are not entangled with other similar components (for example, power steering tubes). With such contact, the hoses and tubes rub against each other, which leads to their rapid wear. If necessary, secure the brake system tubes and hoses with clamps or ties at a sufficient distance from other components.
Hard tubes
Removal
2. Some of the brake pipes can be purchased from Opel dealers ready-made - bent to the required profile and equipped with connecting sleeves. The rest of the brake pipes must be cut yourself from a specially designed pipe with a diameter of 4.75 mm. Kits for making brake pipes can be purchased at auto parts stores.
3. Before disconnecting the brake pipe, remove the brake fluid reservoir cap, cover the filler neck with a piece of polyethylene, and secure it with a rubber band or reinstall the cap. This will reduce fluid loss during the next procedure.
4. Jack up the vehicle and support it securely on axle stands.
5. To remove the brake pipe, unscrew the couplings at each end and release the pipe from the mounting brackets.
Installation
6. Perform installation in reverse order, taking care not to overtighten the connecting couplings.
7. Finally, remove the polyethylene from the filler neck of the replenishment tank and bleed the corresponding hydraulic line as described in Chapter 3.
Flexible hoses
Removal
8. Proceed as described above, but note that after installation the hose should not be kinked, although a slight curvature is acceptable to allow the hose to be moved away from adjacent components.
Installation
9. When connecting the flexible hose to the front brake caliper, replace the O-rings of the coupling bolt.
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