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Home >> Volvo >> 2021 >> S90 T6 R-Design >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Hydraulic/Vacuum-Hydraulic - Removal, Replacement And Installation >> (Brake Booster) >> Brake Booster [2017-2019, B4204T23 | 2017-2022, B4204T27 | 2021, B4204T28] >> Removal And Installation

Removal And Installation

REMOVAL 

NOTE:

Removal steps in this procedure may contain installation details.

GLL1018492Courtesy of VOLVO CARS CORPORATION
NOTE:

Orientation view

Set the vehicle to Inactive mode, described in user mode. Refer to: [USAGE MODE]

Remove bushing push rod. Refer to: [BUSHING PUSH ROD]  

Remove the wiper mechanism, windscreen. Refer to: [WIPER MECHANISM, WINDSHIELD]

GLL1002479Courtesy of VOLVO CARS CORPORATION
  1. Loosen the screws.
  2. Remove the marked part.
  3. Torque:  M8, 24Nm
GLL1023063Courtesy of VOLVO CARS CORPORATION

Undo the hose from the connection.

Disconnect the connectors.

Loosen the clip.

GLL1027662Courtesy of VOLVO CARS CORPORATION

Disconnect the connector.

GLL1033534Courtesy of VOLVO CARS CORPORATION
WARNING:

Make sure that new nuts are installed.

Remove the nuts.

Torque:  Master cylinder, to Brake booster, 27Nm

GLL1014198Courtesy of VOLVO CARS CORPORATION
CAUTION:

Make sure that the components are not forcibly bent.

Fold marked part aside.

GLL1023628Courtesy of VOLVO CARS CORPORATION

Remove the screws.

Remove the marked part.

Torque:  M8, 24Nm

TRANSFERRING COMPONENTS 

GLL1010045Courtesy of VOLVO CARS CORPORATION

INSTALLATION 

To install, reverse the removal procedure.

GLL1017633Courtesy of VOLVO CARS CORPORATION
NOTE:

Use new seals.

NOTE:

Make sure that the seal is correctly located.

Use:  Thread locker normal, 1161053

Calibration according to: Diagnostics / Components / Control modules/ Central Electronic Module (CEM) / Diagnostic sequences / Calibration of brake pedal sensor and brake pedal angle sensor