Hydraulic unit accumulator (ABS) - removal and refitting

Note: A new O-ring must be used between the accumulator and the hydraulic unit on refitting.

Caution: Refer to the
precautions in Section 1.

Removal
1 Disconnect the battery negative lead.

2 Depressurise the hydraulic system by pumping the brake pedal at least 20 times, or until it becomes hard.

3 Wrap a clean rag round the base of the accumulator to catch any spilt fluid.

4 Unscrew the accumulator using a hexagon key. Remove the accumulator, noting the sealing ring and being prepared for fluid spillage (see illustration). If fluid is accidentally spilt on the paintwork, wash off immediately with cold water.

17.4 Unscrew the accumulator and remove it, noting the O-ring (arrowed)
17.4 Unscrew the accumulator and remove it, noting the O-ring (arrowed)

Refitting
5 Fit a new O-ring to the base of the accumulator, fit the accumulator and tighten it.

6 Reconnect the battery. Switch on the ignition and check that the hydraulic unit pump stops within 60 seconds; if not, the accumulator is likely to be faulty.

7 On completion, bleed the complete hydraulic system and check for leaks around all disturbed components.

    See also:

    Exhaust manifold - removal and refitting
    Note: A new gasket will be required on refitting. Removal 1 Disconnect the battery negative lead. 2 On carburettor and CFI engine models remove the air cleaner as described in the appropriate Pa ...

    Distributor (OHC models) - removal and refitting
    Note: During production the engine ignition timing is accurately set using a microwave process, and sealant is applied to the distributor clamp bolt. Removal of the distributor should be avoided e ...

    Front tie-bar - removal and refitting
    Pre-May 1983 1.1 litre models Removal 1 Jack up the front of the car and support it on stands (see “Jacking and Vehicle Support”). 2 Unscrew and remove the nut which holds the tie-bar to the larg ...