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ted. The cable assembly must lie flat on the actuator housing before fitting the
union nut. Tighten to 6 Nm.
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E70 Longitudinal Dynamics Systems
" Reinstallation takes place in the reverse order of removal. Fit the new EMF actuating
unit, cable assemblies first, in the package space. If it was necessary to slack off the
carrier from the EMF actuating unit, it must be resecured to the EMF actuating unit
and tightened to a torque of 4 0.5 Nm. The component carrier must be secured to
the rear axle carrier to a torque of 19Nm15 %. Before securing the cable assem-
blies to the wheel carrier (tightening torque 8 Nm), check that the brake cables are
securely attached in the brake shoe expander otherwise the EMF actuating unit may
be damaged as soon as it is operated.
Start-up
A new EMF actuating unit is always set to "service mode". This mode can be actively
reset with the diagnostic tester or it resets itself automatically on exceeding a defined
vehicle speed. The actuating unit is now in "standby mode". The EMF actuating unit
must then be encoded to the vehicle.
Initializing the Parking Brake
Note: The EMF must be initialized with the diagnostic tester after replacing
the drum brake linings.
Bedding in the Duo-servo Brake
If the brake shoes of the duo-servo brake are replaced as part of repair or maintenance
work, it is necessary to bed in the brake shoes before a sufficient holding effect may be
achieved. Also in this case, the special routine must be activated in the EMF with the
diagnostic tester.
The flashing indicator lamp in the instrument cluster signals that the bedding-in program
is ready.
The bedding-in program will be aborted and the normal parking brake function resumed
if the bedding-in is not started within 30 minutes of program activation or if the ignition is
switched off.
The bedding-in procedure can also be performed on the roller dynamometer.
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E70 Longitudinal Dynamics Systems
Function on Brake Rolling Dynamometer
The Operation of the E70 parking brake can be tested on the brake rolling dynamometer.
As part of the road inspection, the rear axle brake can be tested with the engine running
by pulling the EMF button.
As part of the road inspection, the rear axle brake can be tested with the engine running
by pulling the EMF button. As a result, the EMF actuating unit is applied, the duo-servo
brake is applied and the vehicle normally jumps out of the roller of the test rig.
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E70 Longitudinal Dynamics Systems
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