Bleeding - Conventional
CAUTION:- Make sure that the vehicle is standing on a level surface or supported on a non-wheel free hoist.
- If brake fluid is spilled on the paintwork, the affected area must be immediately washed down with cold water.
NOTE:
- The system consists of separate circuits for each front and diagonally opposite rear wheel. Each front to rear circuit and each wheel circuit can be bled individually of each other.
- If the ABS hydraulic unit needs to be purged, first bleed the system conventionally and then run the bleed option on the NGS diagnostic menu following the instructions given.
1. Disconnect the battery ground cable.
2. Remove the reservoir filler cap.
1 Disconnect the low fluid level warning light switch electrical connector.
2 Remove the cap.
CAUTION: Make sure that the filler cap does not become contaminated.
3. Fit a bleed tube to the front left-hand caliper bleed nipple.
4. Bleed the circuit.
- Make sure the bleed tube is a firm fit.
- Immerse the end of the tube in a bleed jar containing a small quantity of approved brake fluid.
- Position the bleed jar base at least 300 mm above the bleed nipple to maintain fluid pressure and prevent air leaking past the threads of the bleed nipple.
- Unscrew the bleed nipple by one turn.
- Depress the brake pedal fully (pumping brake fluid and/or air into the bleed jar) and allow the pedal to quickly return to the rest position.
- Fill up the master cylinder.
- Continue pumping the brake pedal until air-free fluid is being pumped into the jar.
- With the pedal fully depressed tighten the bleed nipple.
NOTE: The master cylinder must remain filled up with new, clean brake fluid at all times during bleeding.
5. Repeat the procedure for the rear right, front right and rear left-hand brake circuits.
6. Fill up the fluid reservoir to the MAX mark.
7. Install the components in reverse order.
8. When required, bleed the hydraulic unit by running the bleed option on the NGS diagnostic menu following the instructions given.