See also:

Heated Exhaust Gas Oxygen (HEGO) sensor - removal and refitting
Note: A new sealing ring will be required on refitting. Removal 1 Apply the handbrake, then jack up the front of the vehicle and support it on axle stands (see “Jacking and Vehicle Support”). 2 ...

Hydraulic system - bleeding (conventional braking system)
Note: On cars equipped with the Anti-lock Braking System, refer to Section 23. Warning: Hydraulic fluid is poisonous; wash off immediately and thoroughly in the case of skin contact, and seek imm ...

Valve block (ABS) - removal and 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 beco ...