Replacing front axle support
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Car may slip off the vehicle hoist where components are supported
.
Danger! Immobilization period-threatening injuries!
Danger! Immobilization period-threatening injuries!
- Secure the vehicle hoist against lowering and lifting.
- Make sure that the vehicle does not lift off the mounting plates on the vehicle lift.
WARNING:
Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly
.
Danger! Immobilization period-threatening injuries!
Danger! Immobilization period-threatening injuries!
- Observe safety instructions on raising the vehicle using a vehicle hoist.
- For additional information see: 00... RAISE THE VEHICLE USING A VEHICLE LIFT .
WARNING:
Car may slip off the vehicle hoist if the weight is distributed unevenly
.
Danger! Immobilization period-threatening injuries!
Danger! Immobilization period-threatening injuries!
- Ensure there is a specific weight compensation on the car.
NOTE:
RISK OF DAMAGE
Damage to steering column switch cluster (SZL) .
The steering column switch cluster (SZL) or the coil spring cassette can be damaged by twisting the steering wheel if the lower steering shaft (or the universal joint) is separated from the steering gear or the steering column .
Damage to steering column switch cluster (SZL) .
The steering column switch cluster (SZL) or the coil spring cassette can be damaged by twisting the steering wheel if the lower steering shaft (or the universal joint) is separated from the steering gear or the steering column .
- After separating the lower steering shaft (or the universal joint) from the steering gear or from the steering column, secure the steering wheel against twisting.
NOTE:
TECHNICAL INFORMATION
Perform wheel alignment after installation.
Perform wheel alignment after installation.
Preliminary work
- Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING SUSPENSION STRUT BRACE .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE FRONT-END STRUT .
- Refer to REMOVING THE LEFT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
- Refer to RELEASING THE TRANSMISSION OIL LINES ON THE FRONT SUBFRAME .
- Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
- Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
- Refer to REMOVING THE SEALING FOR THE HOOD REAR .
- Refer to REMOVING LEFT AND RIGHT WIPER ARM .
- Refer to REMOVING WINDSHIELD PANEL COVER .
- Refer to REMOVING TRAILING LINK AT SPRING BOLT .
- Refer to REMOVING THE CENTER COWL UPPER PART .
- Refer to REMOVING THE SIDE HOOD SEAL .
- Refer to REMOVING THE COVER IN THE ENGINE COMPARTMENT TOP RIGHT REAR .
- Refer to REMOVING THE COVER IN THE ENGINE COMPARTMENT AT THE TOPPING REAR .
- Refer to REMOVING THE FILLER CHANNEL OF THE WASHER SYSTEM .
- Refer to RELEASING THE WIRING HARNESS SECTION ON THE LEFT SHOCK TOWER .
- Refer to RELEASING THE WIRING HARNESS SECTION AT THE RIGHT SHOCK TOWER .
- Refer to REMOVING ALL IGNITION COILS .
- Refer to REMOVING FUEL DELIVERY LINE .
- Refer to REMOVING THE FRONT LEFT AND RIGHT WHEELS .
- Refer to REMOVING THE COVER OF THE STEERING ASSEMBLY ON THE LEFT AND RIGHT .
- Refer to REMOVING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER ON THE LEFT AND RIGHT .
- Refer to REMOVING THE LEFT FRONT AND RIGHT FRONT BRAKE VENTILATION DUCT .
- Refer to REMOVING THE REAR SECTION OF THE WHEEL ARCH COVER ON THE FRONT LEFT AND RIGHT .
- Refer to REMOVING THE FRONT SPOILER .
- Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
- Refer to REMOVING THE BOTTOM FRONT LEFT AND RIGHT COVER .
- Refer to REMOVING THE LEFT AND RIGHT FRONT UNDERSHIELD .
- Refer to REMOVING THRUST FIELD .
- Refer to LOOSENING THE ANTI-ROLL BAR LINK ON THE LEFT AND RIGHT FROM THE ANTI-ROLL BAR .
- Refer to REMOVING THE ANTI-ROLL BAR .
- Refer to REMOVING THE BOTTOM STEERING SHAFT ON THE DOUBLE PIVOT .
- Refer to UNPLUGGING AND REMOVING THE WIRING HARNESS OF THE EPS .
- Refer to LOOSENING THE TIE ROD ON THE LEFT AND RIGHT FROM THE SWIVEL BEARING .
- Refer to REMOVING THE ELECTROMECHANICAL STEERING GEAR .
- Refer to PUTTING THE ENGINE INTO THE INSTALLATION POSITION .
- Refer to DETACHING THE LINE CONNECTION OF THE RIDE HEIGHT SENSOR .
- Refer to RELEASING THE COOLANT LINES FROM THE FRONT SUBFRAME .
- Refer to RELEASING THE REINFORCEMENT STRUT FROM THE FRONT SUBFRAME .
- Refer to LOOSENING THE TENSION STRUT ON THE LEFT AND RIGHT FROM THE FRONT AXLE SUPPORT .
- Refer to RELEASING THE ATTACHMENT ROD OF THE RIDE HEIGHT SENSOR FROM THE WISHBONE .
- Refer to RELEASING THE BOTTOM WISHBONE ON THE LEFT AND RIGHT FROM THE FRONT SUBFRAME .
- Refer to PREPARING THE SPECIAL TOOL .
- Refer to REMOVING FRONT AXLE COMPLETELY .
- Loosen screws (1) .
- Feed out and remove the engine mount (1) .
- Loosen screw (2) .
- Guide out and remove holder (3) .
- Replace the front subframe.
Parts: front subframe
- Insert and install the holder (3) .
- Tighten down screw (2)
.TIGHTENING TORQUE SPECIFICATIONS
Holder to front axle support M6 Tightening torque 8 Nm - Feed in and install the engine mount (1) .
- Tighten the screws (1)
.TIGHTENING TORQUE SPECIFICATIONS
Engine mount to front axle support M8 Tightening torque 19 Nm
Follow-up work
- Refer to INSTALLING FRONT AXLE COMPLETELY .
- Refer to SECURING THE BOTTOM WISHBONE ON THE LEFT AND RIGHT TO THE FRONT SUBFRAME .
- Refer to ATTACHING THE ATTACHMENT ROD OF THE RIDE HEIGHT SENSOR TO THE WISHBONE .
- Refer to SECURING THE TENSION STRUT ON THE LEFT AND RIGHT TO THE FRONT SUBFRAME .
- Refer to ATTACHING THE REINFORCEMENT STRUT TO THE FRONT SUBFRAME .
- Refer to SECURING THE COOLANT LINE TO THE FRONT SUBFRAME .
- Refer to ATTACHING THE LINE CONNECTION OF THE RIDE HEIGHT SENSOR .
- Refer to INSTALLING THE ELECTROMECHANICAL STEERING GEAR .
- Refer to SECURING THE TIE ROD ON THE LEFT AND RIGHT OF THE SWIVEL BEARING .
- Refer to ATTACHING AND FIXING THE WIRING HARNESS OF THE EPS .
- Refer to INSTALLING THE DOUBLE PIVOT ON THE BOTTOM OF THE STEERING SHAFT .
- Refer to INSTALLING THE ANTI-ROLL BAR .
- Refer to SECURING THE ANTI-ROLL BAR LINK ON THE LEFT AND RIGHT TO THE ANTI-ROLL BAR .
- Refer to REMOVING THE ENGINE FROM THE INSTALLATION POSITION .
- Refer to INSTALLING THE STIFFENING PLATE .
- Refer to INSTALLING THE LEFT AND RIGHT FRONT UNDERSHIELD .
- Refer to INSTALLING THE REAR SECTION OF THE FRONT WHEEL ARCH COVER ON THE LEFT AND RIGHT .
- Refer to INSTALLING THE LEFT FRONT AND RIGHT BRAKE VENTILATION DUCT .
- Refer to INSTALLING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER ON THE LEFT AND RIGHT .
- Refer to INSTALLING THE COVER OF THE STEERING ASSEMBLY ON THE LEFT AND RIGHT .
- Refer to INSTALLING THE FRONT LEFT AND RIGHT WHEELS .
- Refer to INSTALLING FUEL DELIVERY LINE .
- Refer to INSTALLING ALL IGNITION COILS .
- Refer to INSTALLING THE CENTER COWL UPPER PART .
- Refer to INSTALLING TENSION STRUT ON SHOCK TOWER .
- Refer to INSTALLING WINDSHIELD PANEL COVER .
- Refer to INSTALLING LEFT AND RIGHT WIPER ARM .
- Refer to INSTALLING THE FILLER CHANNEL OF THE WASHER SYSTEM .
- Refer to FASTENING THE WIRING HARNESS SECTION TO THE LEFT SHOCK TOWER .
- Refer to FASTENING THE WIRING HARNESS SECTION TO THE RIGHT SHOCK TOWER .
- Refer to INSTALLING THE COVER IN THE TOP RIGHT REAR PART OF THE ENGINE COMPARTMENT .
- Refer to INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT THE TOPPING REAR .
- Refer to INSTALLING THE SIDE HOOD SEAL .
- Refer to INSTALLING THE REAR HOOD SEAL .
- Refer to SECURING THE TRANSMISSION OIL LINES ON THE FRONT SUBFRAME .
- Refer to INSTALLING THE INTAKE FILTER HOUSING ON THE LEFT (FRONT-END STRUT REMOVED) .
- Refer to INSTALLING THE FRONT-END STRUT .
- Refer to CONNECTING ALL BATTERY GROUND LEADS .
- Refer to INSTALLING ACOUSTIC COVER .
- Refer to INSTALLING THE STRUT BRACE .
- Refer to INSTALLING THE REAR RIGHT ENGINE COMPARTMENT COVER .
- Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
- Refer to TAKING HOOD OUT OF THE SERVICE POSITION .
- Refer to TIGHTENING THE SCREW CONNECTION OF THE TENSION STRUT ON THE FRONT SUBFRAME .
- Refer to TIGHTENING THE SCREW CONNECTION OF THE WISHBONE TO THE FRONT SUBFRAME .
- Refer to PERFORMING CHASSIS ALIGNMENT CHECK .
- Refer to INSTALLING COVERS AT FRONT BOTTOM ON LEFT AN RIGHT SIDES .
- Refer to INSTALLING FRONT UNDERBODY PROTECTION .
- Refer to INSTALLING THE FRONT SPOILER .