Pressure regulating valve (Saloon and Estate models) - removal and refitting
1 The brake pressure regulating valve is located within the engine compartment, just above the aperture in the wing inner panel through which the steering tie-rod passes. On pre-1986 models the valves comprise a metal housing bolted to the inner panel. On later models the valves, one for each brake circuit, are individually located in a bracket attached to the inner panel (see illustrations).
13.1a Pressure regulating valve mounting bolts (A) - pre-1986 models
13.1b Pressure regulating valves and mounting bracket - 1986 models onward
Removal
Note: Before starting work, refer to the
warning at the beginning of Section 3
concerning the dangers of hydraulic fluid.
2 Unscrew the unions, noting their locations and disconnect the hydraulic pipes from the valve(s). Cap the ends of the pipes with bleed nipple dust caps to prevent fluid loss.
3 Unscrew the mounting bolts and remove the valve or mounting bracket as applicable.
On later models extract the retaining clips and remove the valves from the bracket (see illustration).
13.3 Pressure regulating valve-to-bracket retaining clip - 1986 models onward
4 On both versions the valves are sealed units and only serviced as complete assemblies.
Refitting
5 Refitting is the reverse sequence to removal
but bleed the hydraulic system as described
in Section 11 on completion.
See also:
Introduction
CALIFORNIA Proposition 65 Warning
WARNING: Engine exhaust, some of its constituents, and
certain vehicle components contain or emit chemicals known to
the State of California to cause cancer and bi ...
Vacuum servo (conventional braking system) - removal and refitting
Caution: Refer to the
precautions in Section 1.
Removal
1 To remove the servo, first remove the
master cylinder.
2 Disconnect the vacuum hose from the
servo (see illustration).
14.2 Servo vac ...
Coolant renewal (Every 24 000 miles or 2 Years)
Cooling system draining
1 It is preferable to drain the system when the
coolant is cold. If it must be drained when hot,
release the pressure cap on the thermostat
housing (or expansion tank on la ...