Brakes (Bleed): Adjustments

Service Repair No. 70.25.06

This procedure covers bleeding the high pressure system and must be carried out when any part of the ABS6 high pressure circuit is disconnected. If the braking system requires bleeding, it must be bled before the high pressure system.

CAUTION: Never re-use fluid which has been bled from the brake system. The ABS6 pump reservoir must be full to the MAX mark before bleeding. Check reservoir fluid level during bleeding and keep topped-up using recommended brake fluid. Do not fill to above the MAX mark.

CAUTION: Do not allow brake fluid to contact paint finished surfaces as paint may be damaged. If spilled, remove fluid and clean area with clean warm water.

Bleed

1. Disconnect vacuum pipe from air cleaner and intake trunking clips.
2. Disconnect intake trunking from air cleaner and release from clips.
3. Clean area around reservoir filler cap.
4. Check that all pipe and hose connections are tight and that there are no leaks in the system.
5. Top-up ABS6 pump reservoir with recommended brake fluid, see INFORMATION – CAPACITIES, FLUIDS AND LUBRICANTS
6. Clean area around bleed screw and remove cap from bleed screw.
7. Fit 'T' wrench of tool SMD 4081 to bleed screw. Ensure filler cap is fitted to 'T' wrench reservoir.
8. Connect ABS6 bleed control unit, SMD 4081 to multiplug under R.H. seat.
9. With the car in Neutral start the engine and allow to idle.
10. Apply the footbrake and hold down.
11. Press 'START CYCLE' button on the ABS6 bleed control unit to start the bleed sequence. While the bleed sequence is running the red 'BLEED CYCLE IN PROGRESS' LED will pulse and 'kickback' will be felt on the brake pedal. When the bleed is complete the red LED will extinguish and the green 'CYCLE COMPLETE' LED will illuminate.
12. Switch off the engine and SLOWLY open bleed screw using 'T' wrench, allow brake fluid to enter 'T' wrench reservoir. Close bleed screw when fluid stops rising or when reservoir is full.

CAUTION: Bleed screw must be opened very slowly to avoid aerating the fluid.

13. Remove filler cap and check condition of fluid in 'T' wrench reservoir.
    If aerated, dispose of fluid in 'T' wrench reservoir. Wait a few minutes for air to disperse in system. Repeat the bleed process until fluid in reservoir is air-free.
    If air-free, tighten bleed screw, top up reservoir and fit cap.
14. Wash away any brake fluid from around bleed screw with clean warm water. Fit protective cap to bleed screw.