Quote:
Originally Posted by shiner
... you didn't run you're system dry. Had you done do you would have experienced, like others the need for a t4 or pscan to run the abs modulator to purge the system of air. k
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Hello Andy,
Whether the braking system is run dry or not is actually irrelevant.
In normal braking mode (ABS modulator inactive)
"... fluid from the master cylinder assembly flows through the open ... inlet solenoid valves to operate the brakes." (RAVE 70-21) It really is as simple as that.
As the ABS modulator has not operated no air can be drawn into the accumulator/pump assembly. It is therefore unnecessary to run the modulator to remove air that isn't there. Any air present in the modulator's pipework and open inlet solenoid valve will be purged by conventional bleeding methods. This is illustrated clearly in the modulator schematics in RAVE 70-19 (non-ETC) and 70-20 (ETC).
The MG Rover instructions for bleeding the brakes (Service procedures 70-4) describe the conventional method.
There is absolutely no mention of mandatory or optional use of Testbook.
Simon