Hydraulic pipes and hoses - renewal

Note: Before starting work, refer to the warning at the beginning of Section 3 concerning the dangers of hydraulic fluid.

1 Always disconnect a flexible hose by prising out the spring anchor clip from the support bracket and then, using two closefitting spanners, disconnect the rigid line from the flexible hose (see illustration).

15.1 Removing a flexible hose spring anchor clip
15.1 Removing a flexible hose spring anchor clip

2 Once disconnected from the rigid pipe, the flexible hose may be unscrewed from the caliper or wheel cylinder.

3 When reconnecting pipelines, or hose fittings, remember that all union threads are to metric sizes. No copper washers are used at unions and the seal is made at the swaged end of the pipe, so do not try to wind a union in if it is tight yet still stands proud of the surface into which it is screwed.

4 A flexible hose must never be installed twisted, but a slight “set” is permissible to give it clearance from an adjacent component. Do this by turning the hose slightly before inserting the bracket spring clip.

5 Rigid pipelines can be made to pattern by factors supplying brake components.

6 If you are making up a brake pipe yourself, observe the following essential requirements.

7 Before flaring the ends of the pipe, trim back the protective plastic coating by a distance of 5.0 mm.

8 Flare the end of the pipe as shown (see illustration).

15.8 Brake pipe flare
15.8 Brake pipe flare

A Protective coating removed before flaring

9 The minimum pipe bend radius is 12.0 mm, but bends of less than 20.0 mm should be avoided if possible.

    See also:

    Aiming the headlamps
    The headlamps on your vehicle are properly aimed at the assembly plant. If your vehicle has been in an accident, the alignment of your headlamps should be checked by your authorized dealer. Verti ...

    Rear shock absorber - removal and refitting
    Saloon and Hatchback models 1 With the weight of the vehicle resting on the roadwheels, work under the vehicle to unscrew and remove the shock absorber lower mounting bolt and nut from the relevan ...

    Manual transmission
    All vehicles CAUTIONS: Do not engage reverse gear when the vehicle is moving. This can cause damage to the transmission. Do not apply any undue lateral force to the gear lever when changing from ...