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1.After the ignition switch
is turned to the LOCK (OFF) position, depress the brake
pedal 40 times or more until the pedal force is felt heavy
so that pressure in HBB supply system can be
released.
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2.
caution |
Never turn the ignition switch
to the ON position since driving the pump motor
without brake fluid would cause the pump motor
to get damaged.
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Drain the brake fluid from the front brake
system.
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![](../../../img/35/AC604873AB00ENG.png)
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3.
caution |
When removing the accumulator,
use a rag to prevent the brake fluid from
dripping on the pump motor.
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Use the special tool accumulator wrench (MB991926)
shown in the figure to remove the
accumulator. 4.Remove O-ring between HBB and the
accumulator. 5.Install the new O-ring to the
accumulator to be replaced. 6.Use the special tool
accumulator wrench (MB991926) to install the
accumulator. Tightening torque: 54 ± 5
N·m 7.Refill brake fluid for air
bleeding. 8.Check the power supply system and its
operation. 9.Erase the diagnosis
code. 10.Discard the old accumulator.
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