JAC HFC4DA1-2C, Руководство по обслуживанию

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ABS
ABS
ABS ABS Anti-lock
Anti-lock
Anti-lock Anti-lock Brake
Brake
Brake Brake System
System
System System
- 82 -
Diagnosis
Diagnosis Diagnosis
Diagnosis and
and and
and Testing
Testing Testing
Testing
Brake Brake Brake Brake bleeding bleeding bleeding bleeding
Note:
Brake bleeding can be performed in the first and second
circuits.
Brake bleeding should be performed after the
replacement of brake system components (such as
change of brake fluid, replacement of brake system
components and hydraulic unit) or when the brake pedal
is soft.
The hydraulic unit for replacement must be wet-type
ABS hydraulic governor with ECU.
During exhaust, please ensure the brake system is of
complete structure and all hydraulic units are properly
connected.
Before brake bleeding, shift to P gear (for AMT) or N
gear (for MT) and apply the parking brake lever.
Brake fluid is toxic, so please clean your skin if any
fluid touches your skin.
1. Manual brake bleeding procedures
Step Operation
1 Fill the brake fluid reservoir.
2
Repeat the procedures below for bleeding of
each wheel cylinder in order of left rear, left
front, right front and right rear.
3 Open the bleed screw.
4 Depress and release brake pedal repeatedly.
5 Close the bleed screw.
6 Release the brake pedal.
7 Check the pedal travel.
8 If failed, repeat bleeding.
9
Check if brake fluid level is within upper and
lower limit marks.
Remarks: Brake fluid level in reservoir shall be over the
lower limit mark during the whole bleeding process.
2. Manual brake bleeding schematic diagram
Manual brake bleeding schematic diagram for 4-channel ABS X type circuit: Left front wheel
Function mode:
The brake fluid flows into wheel cylinder through master cylinder and hydraulic unit. Open the bleed screw on the left
front wheel with the screws on other wheels closed. Depress and release brake pedal until air bubbles and impurities
are fully drained and the brake fluid is pure. Perform the same process on the other three wheels.