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Home >> Mercedes Benz >> 2019 >> SL550 >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Suspension - 231 Chassis >> Testing & Repair >> Remove/install rear axle pressure reservoir - AR32.50-P-0011RX

Remove/install rear axle pressure reservoir - AR32.50-P-0011RX

MODEL 230.456/458 with CODE (487) Active Body Control (ABC) 

MODEL 230.470/471/472/477 

MODEL 230.479 as of model year 2006 

MODEL 231 with CODE (487) Active Body Control (ABC) 

Fig 1: Rear Axle Pressure Reservoir Remove/Install Components
G11128700Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Notes on fitting hydraulic lines and hoses   AH32.50-P-0001-02A
NOTES Before opening the hydraulic system, thoroughly clean the area surrounding the separation point. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the hydraulic system    
IMPORTANT Notes on Active Body Control suspension   AH32.50-P-0001-01N
1 Remove rear axle ABC valve unit (Y36/2) Model 230 AR32.50-P-0002RX
    Model 231 AR32.50-P-0002RK 
2 Remove bolt (3) and remove hydraulic line (8) from pressure reservoir (2) IMPORTANT Detach hydraulic line (8) at the earliest 10 minutes after switching off the engine, as only then is the ABC system completely unpressurized.
INSTALLATION IMPORTANT Check sealing rings for damage and replace if necessary. Check support rings for damage and if necessary replace the complete hydraulic line (8).
TORQUE SPECIFICATION Model 230 *BA32.50-P-1027-01A 
    TORQUE SPECIFICATION Model 231 *BA32.50-P-1011-01C 
3 Unscrew nuts (4) and remove pressure reservoir (2) If necessary: ↓  
REFER TO FORMS Dispose of pressure reservoir. OS32.30-P-0620-01A
    TORQUE SPECIFICATION Model 230 *BA32.50-P-1025-01A 
    TORQUE SPECIFICATION Model 231 *BA32.50-P-1008-01C 
4 Install in the reverse order    
5 Fill and bleed ABC system Model 230 AR32.50-P-0021N
    Model 231 AR32.50-P-0021SX 
ACTIVE BODY CONTROL SUSPENSION

Number Designation Model 230
BA32.50-P-1025-01A Nut, rear axle pressure reservoir to valve unit bracket Nm 10
BA32.50-P-1027-01A Bolt, line to rear axle pressure reservoir Nm 20
ACTIVE BODY CONTROL SUSPENSION

Number Designation Model 231
BA32.50-P-1008-01C Nut, pressure reservoir to valve unit bracket on rear axle Nm 10
BA32.50-P-1011-01C Bolt, line to rear axle valve unit pressure reservoir Nm 20