Amanti V6-3.8L (2007)
3. Bleeding brakes after replacement of the Hydraulic Control Unit (HCU)
NOTE:
The repair part HCU is completely filled
3.1 Vehicle preparation
1)
a. Connect bleeder bottle tube to bleed screws of FL and RL caliper and open them,
b. Actuate the brake pedal > 60 mm and secure it by using a pedal support. This closes the TMC central valves and prevents fluid flowing out
of the opened brake system.
c. Close FL and RL caliper bleeder screws and remove bleeder bottle.
d. Remove defective HCU.
NOTE:
Remove brake tubes which lead from the HCU to the TMC first and close open ports of the HCU with protection caps immediately. Then
remove brake tubes from HCU to the brakes and close these ports of the HCU with protection caps, too.
e. Install new HCU
NOTE:
The new repair part HCU is totally pre-filled. To keep the brake fluid inside the HCU, remove port protection caps of the brake circuit
connections first and assemble these brake tubes. When all brake circuits are connected, remove port protection caps of TMC ports of HCU
and connect TMC tubes to HCU.
f.
Remove pedal support.
g. Remove fluid reservoir cap and fill reservoir to "MAX" with new DOT 4 brake fluid.
h. Lift vehicle or use inspection pit.
3.2 Bleeding conventional brake system
See section 1.2
3.3 Vehicle disconnection according to 1.3
4. Brake bleeding after caliper replacement.
4.1 Vehicle preparation
1)
a. Connect bleeder bottle tube to bleed screw of FL and RL caliper and open them.
b. Actuate the brake pedal > 60 mm and secure if by using a pedal support. This closes the TMC central valves and prevents fluid flowing out
of the opened brake system.
c. Close FL and RL caliper bleeder screws and remove bleeder bottle.
d. Replace defective caliper with a new one.
e. Remove fluid reservoir cap and fill reservoir to "MAX" with new DOT 4 brake fluid.
4.2 Bleed procedure
Only the new caliper has to be bled according to the conventional bleeding method. (See section 1.2)
4.3 Vehicle disconnection according to 1.3
5. Brake fluid renewal
5.1 Vehicle preparation
1)
a. Connect bleeder unit to brake fluid reservoir.
Fill pressure max. 3 bar.
b. Lift vehicle
5.2 Bleed procedure
2)
a. Connect bleeder bottle tube to FL caliper bleed screw and open it.
b. Leave screw open until new, clear, bubble free fluid is observed in tube.
c. Close bleed screw.
d. Repeat above procedure for the remaining wheel calipers.
