ACCUMULATOR REPLACEMENT


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.
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.
Drain the brake fluid from the front brake system.

3.
caution When removing the accumulator, use a rag to prevent the brake fluid from dripping on the pump motor.
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.