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T11 Service Manual Chassis System
2.3 Installation of ABS Assembly Caution: only when mounting brake hard tube can the hydraulic opening plug of ABS assembly is taken off so as to avoid impurities coming into the brake system. 1. Mount the ABS assembly onto the bracket, and the tightening torque shall be 16~24Nm; 2. Remove the plug in the hydraulic opening and mount the brake hard tube, and then confirm that the hard tube connection is correct. 3. Mount the brake hard tube that leads to master cylinder, and the tightening torque of brake hard tube shall be 8~16Nm and 12~18Nm respectively. 4. Fill new brake fluid into liquid reservoir till the level reaches MAX, and then bleeding in accordance with specified method. 5. When turning the ignition switch to ON, the ABS warning lamp will be on for 3.7 seconds as well, and then it will be off. 2.4 The Bleeding and Oil Filling after Replacing HECU 1. Employ HECU (wet type) that is used for after-sales service as substitution, and then turn the ignition switch to the position ON, finally use analyzer to check if malfunction code exists. If there exist malfunction codes, firstly eliminate the malfunction code via analyzer. inspection. 2. Step on the brake pedal, and unscrew the venting bolts of brake caliper or drum brake of all of the wheels for air bleeding. The oil storage tank of master cylinder shall connect to a device, which can continuously supply brake fluid so as to ensure the oil storage tank is always full. The operation shall not be stopped until there is no air in the brake fluid, which comes through the venting bolt. In addition, the brake pedal shall be adequately stiff (the same as the bleeding /oil filling operation of the brake system without ABS). 3. Measure the pedal stroke, if it does not conform to specification, repeat the operation as described in item (2). Repeat the two operations above for over 10 times, if the brake pedal stroke does not conform to specification, rerun it after replacing and mount the HECU (wet type) that is used for after sales service. If the brake pedal stroke conforms to the specification, terminate the bleeding / oil filling operation. 4. Precautions of bleeding / oil filling: Run the ABS and if found brake pedal soft, then use analyzer to perform bleeding mode operation. If there is no counterforce when applying the brake pedal, repeat the action of applying/releasing the pedal till terminate bleeding mode. intervals, and close solenoid valve for 1 minute, then keep the drive motor running. After the bleeding mode operation, the operation of item 2 and 3 must be performed.
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