Rear Subframe: Service and Repair
Rear subframe
Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.
Preparatory work
Remove the rear springs on both sides. Rear Suspension
Remove the rear anti-roll bar. Service and Repair
Removal
Removing the wheel sensor rear right-hand side
Note! Blow clean thoroughly around the sensor with compressed air before removing it.
Remove the sensor mounting screw and allow to hang in place.
Removing the brake caliper
Remove the following on both sides:
- the bolts, x2
- the brake caliper.
Remove the brake hose from its bracket. Hang the brake caliper in a suitable way.
Removing the shock absorber
Remove the following on both sides:
- 1 screw
- the shock absorber from the lateral link.
Removing the air baffle
Remove the following on both sides:
- the plastic nuts x 2 (1)
- the screw x 1 (2)
- the air baffle.
Note! The illustration shows the left side. When removing on the right side, the same procedure applies with the right air baffle.
Removing the connector to the differential electronic module (DEM) for four wheel drive
Disconnect the connector on the right-hand side. Release the connector from the clip.
Removing the lateral link
Remove the following on both sides:
- the 2 screws (1)
- the connector (2). Disconnect the connector and the cable harness from the clips.
Removing the clips for the brake cable
Remove:
- 1 screw
- the 1 clip.
Removing the propeller shaft
Remove the propeller shaft from the flange on the final drive. See: Propeller shaft Propeller Shaft.
Removing the sub-frame
Note! Ensure that no cables/hoses are trapped when lowering the sub-frame.
Use a post-lift with lifting table. Position the lifting table against the sub-frame.
Note! Make sure that the lifting table is centered under the subframe for optimal weight distribution. Check that the lifting table is correctly applied against the subframe.
Remove:
- the screw, 1 pc. (1), on both sides
- the screws, 2 pcs. (2), on both sides.
Lower the sub-frame approximately 5 cm.
Removing the leak diagnostic pump
Remove the screw that holds the pump's bracket on the sub-frame, 1 pc. M5.
Lay the pump aside.
Disconnect the cable harness to the pump from the sub-frame.
Removing the connections to the carbon filter container
Remove:
- the pipes, 2 pcs. with quick-couplings (1)
- the clamp with the hose (2).
Remove any auxiliary/extra cable harnesses from their holders on the sub-frame.
Removing the sub-frame, continued
Note! Make sure that no cables/hoses are trapped when lowering the subframe.
Lower the sub-frame.
Transferring components
Remove:
- the screws that hold the carbon filter holder on the rear sub-frame, 4 pcs. M6
- the bracket with carbon filter holder.
Only applies to vehicles with Bi-Xenon lights.
Remove the rear position sensor according to: Position sensor rear, headlamp Service and Repair.
Applies to all vehicles.
Remove the drive shafts on both sides according to: Rear drive axle Rear Drive Axle.
Remove the screws on both sides, 2 pcs.
Remove the following on both sides:
- screw, 1 pc.
- the longitudinal stay with the lower and upper link arm as well as the track rod as a single unit.
Remove:
- the 3 screws
- the cable harness from the sub-frame
- the final drive
- the sub-frame
Fitting parts on the new sub-frame
Install:
- the final drive
- the 3 screws. Tighten. See: Tightening torque, M56, MPS6, AW50/51 AWD, M66 AWD, M66, MMT6, MTX75, IB5, AW55-50/51SN Tightening Torque
- the cable harness.
Install on both sides:
- the longitudinal stay with both the lower and upper link arm as well as the track rod
- the screw, 1 pc., but do not tighten yet.
Install the screws on both sides, 2 pcs., but do not tighten yet.
Install the drive shafts on both sides according to: Rear drive axle Rear Drive Axle.
Only applies to vehicles with Bi-Xenon lights.
Fit the rear position sensor according to: Position sensor rear, headlamp Service and Repair.
Applies to all vehicles.
Install:
- the bracket with carbon filter holder
- the screws, 4 pcs. M6.
Installation
Note! For tightening torques, see Specifications. [1][2]Specifications
Installing the sub-frame
Note! Make sure that no cables/hoses are trapped when installing the subframe.
Carefully raise the sub-frame. Use a post-lift with lifting table.
Note! Make sure that the lifting table is centered under the subframe for optimal weight distribution. Check that the lifting table is correctly applied against the subframe.
Raise the sub-frame but stop 5 cm before the mounting point.
Installing the leak diagnostic pump
Install:
- the wiring for the leak diagnostic pump on the sub-frame
- the pump bracket
- the M5 screw (1) securing the pump bracket on the sub-frame.
Installing the connections to the carbon filter container
Install:
- the two pipes and quick-release connectors (1)
- the clamp and hose (2)
- any auxiliary/extra wiring in their holders on the sub-frame.
Installing sub-frame, continued
Lift up the sub-frame. Ensure that the locating pins engage in their holes in the bodywork.
Note! Make sure that no cables/hoses are loaded or trapped when installing the subframe.
Install on both sides:
- the 2 screws. Tighten. See: Tightening torque [1][2]Specifications
- the screw. Tighten. See: Tightening torque [1][2]Specifications
Remove the lifting table.
Installing the lateral link
Install on both sides:
- the 2 screws (1). Tighten acc. to Tightening torque [1][2]Specifications
- the connector (2)
- the connector in the clips.
Installing the connector to the differential electronic module (DEM) for four wheel drive
Connect the connector on the right-hand side.
Tightening the upper/lower control arm and tie rod
Install a transmission jack under the lateral link. Press up the lateral link to the normal position. For the correct value in the normal position, see: Normal position Service and Repair.
Tighten on both sides:
- - the 2 x screws for the upper and lower control arm. Tighten. See: Tightening torque. [1][2]Specifications
- the screw for the track rod, 1 pc. Tighten according to: Tightening torque. [1][2]Specifications
Installing the anti-roll bar
Install the anti-roll bar. Service and Repair
Installing the propeller shaft
Install the anti-roll bar. Propeller Shaft
Installing the rear spring
Install the springs. Rear Suspension
Installing the shock absorber
Install on both sides:
- the shock absorber
- the screw. Tighten. See: Tightening torque [1][2]Specifications
Installing the clips for the brake cable
Install on both sides:
- the clip
- the screw.
Installing the air baffle
Install on both sides:
- the air baffle
- the plastic nuts x 2 (1)
- the screw, x 1 (2).
Note! The illustration shows the left side. When installing on the right side, the same procedure applies with the right air baffle.
Installing the brake caliper
Install on both sides:
- the brake caliper
- the 2 screws. Tighten. See: Tightening torque Tightening Torque
- the brake hose in its bracket.
Installing the wheel sensor rear right-hand side
Install:
- the wheel sensor
- the screw. Tighten. See: Tightening torque [1][2]Specifications
Finishing
Install the wheels rear. Service and Repair
Carry out wheel alignment in accordance with: Wheel angles, check Service and Repair
Tighten the screw for the lower control arm. Tighten. See: Tightening torque. [1][2]Specifications
If the vehicle is equipped with Bi-Xenon lights, the position sensor shall be calibrated. Perform calibration according to VIDA Vehicle communication.