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Home >> Audi >> 2018 >> RS 7 Performance >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Differential System (General & Service Information - Rear Final Drive 0B5A, 0BKA Sport Differential) >> Final Drive, Differential >> Rear Final Drive, Disassembling And Assembling >> Hydraulic Control Unit, Removing And Installing >> Removing

Hydraulic Control Unit, Removing And Installing: Removing

-- Place the vehicle on a lift.

-- Lower the back section of the exhaust system just a little and secure it. If necessary remove the back section of the exhaust system. Refer to EXHAUST PIPES/MUFFLERS CEUC, CRDB, CTGE, CWUB, CWUCEXHAUST PIPES/MUFFLERS CLAB, CLAA, CDUC, CGQB, CKVB, CKVC, CDUD, CPNB, CTCB, CTCC, CVUA, CVUBEXHAUST PIPES/MUFFLERS CREC, CRED, CREHEXHAUST PIPES/MUFFLERS CGXB, CTUA .

NOTE:

A second technician is needed to help remove the rear section of the exhaust system.

-- If equipped, remove the bolts -arrows- and remove the wiring harness bracket -1- from the rear final drive. 

GWWA39-10360Courtesy of AUDI OF AMERICA, LLC
NOTE:

Mark the Oil Pressure/Temperature Sensor -- and the Clutch Valves -- connectors -2-.

-- Disconnect the connectors -2- from the Oil Pressure/Temperature Sensor -- and the Clutch Valves --.

-- Disconnect the connector -4- from the All Wheel Drive Pump -V415-.

-- Unclip the wiring harness -3- from the final drive and the subframe and tie it up -5 through 7-.

-- Place the Drip Tray under the rear final drive.

-- Drain the ATF from the rear final drive. Refer to ATF ON REAR FINAL DRIVE 0BF AND 0BE, DRAINING .

-- Drain the gear oil from the rear final drive. Refer to GEAR OIL ON REAR FINAL DRIVE 0BF AND 0BE, DRAINING .

-- Remove the All Wheel Drive Pump -V415-. Refer to All Wheel Drive Pump -V415-, REMOVING AND INSTALLING .

NOTE:

The All Wheel Drive Pump -V415- must be removed in order to loosen and tighten the nut on the right line to the hydraulic control unit. Refer to Removing .

-- Loosen the left -6- and right -7- lines to the hydraulic control unit -1- one turn -arrows A- and remove them from the chambers -arrows B-. 

GWWA39-10376Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -2 through 5- and remove the hydraulic control unit -1- with the seal.