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Home >> Volvo >> 2020 >> S90 T6 R-Design >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Hydraulic/Vacuum-Hydraulic - Removal, Replacement And Installation >> (Brake Booster) >> Brake Booster [2020, 2022, B4204T28 | 2021-2022, B420T] >> Removal And Installation

Removal And Installation

REMOVAL 

NOTE:

Removal steps in this procedure may contain installation details.

Battery, disconnection. Refer to: [BATTERY DISCONNECTING AND CONNECTING]

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

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

GLL1056825Courtesy of VOLVO CARS CORPORATION

Remove the marked part.

  1. Torque:  Strut and spring assembly bar to spring strut turret, 30Nm
  2. Torque:  M6, 10Nm

ALTERNATIVE 1 

GLL1048031Courtesy of VOLVO CARS CORPORATION

Disconnect the connector.

Remove the screw.

Fold marked part aside.

Torque:  M8, 24Nm

ALTERNATIVE 2 

GLL1046041Courtesy of VOLVO CARS CORPORATION

Disconnect the connector.

Remove the screw.

Fold marked parts aside.

Torque:  M8, 24Nm

ALL VEHICLES 

GLL1042262Courtesy of VOLVO CARS CORPORATION
CAUTION:

Pull carefully.

Loosen the nuts.

Fold marked parts aside.

Torque:  Ø6 mm diameter brake line, 14Nm

GLL1046393Courtesy of VOLVO CARS CORPORATION

Disconnect the connector.

Fold marked part aside.

GLL1049899Courtesy of VOLVO CARS CORPORATION

Remove the nuts.

Torque:  Master cylinder, to Brake booster, 27Nm

GLL1045038Courtesy of VOLVO CARS CORPORATION

Remove the marked part.

Remove the part carefully

TRANSFERRING COMPONENTS 

GLL1051700Courtesy of VOLVO CARS CORPORATION

Remove the marked part.

INSTALLATION 

To install, reverse the removal procedure.

Perform Battery, connecting. Refer to: [BATTERY DISCONNECTING AND CONNECTING]

Perform bleeding air brake system. Refer to: [BRAKE SYSTEM BLEEDING]

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

NOTE:

The following steps are only necessary when installing a new component.

Order and download the appropriate software according to: VIDA/Software/Hardware Changes