Replacing Rear Axle Spring Actuator (Accumulator)

NOTE: Numbers in parentheses ( ) indicate a component or tool in the associated illustration.

REMOVAL

WARNING:
^ Risk of injury to the eyes and other parts of the body due to hydraulic oil spraying out under high pressure.
^ Wear protective clothing and safety glasses.
^ Before starting work on the hydraulic system, depressurize the system.
^ Seal open lines with blind plugs

NOTE: Refer to general notes for working on vehicles with level control/ADS. Service Precautions

1. Empty pressure oil system, refer to Emptying And Filling Pressure Oil System
2. Disconnect pressure lines (S1. P4) on spring actuator

3. Remove spare wheel cover
- Remove spring actuator through the trunk
4. Unscrew self locking nuts (4f) and spring actuator (4)

INSTALLATION
- Install in reverse order, noting the following:
- Replace self-locking nuts
- Dispose of spring actuator, refer to Disposing of Spring Actuator (Accumulator)

WARNING:
^ Risk of injury when drilling gas-filled components due to excaping gas (not flammable).
^ Eye protection must be worn

- Fill pressure oil system
- Tighten the following components as noted:
- Pressure line of level control/ADS to spring actuator:
- 10 x 1 mm: 14 Nm
- 16 x 1.5 mm: 30 Nm