Important!

This replacement procedure can be used for:
MERCEDES-BENZ M-Class (W163) ML 270 CDI (163.113)

The steps may slightly vary depending on the car design.

How to change upper rear suspension arm on MERCEDES-BENZ M W163 TUTORIAL | AUTODOC

Replacement: rear upper arm – Mercedes ML W163. List of the tools you'll need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Combination spanner #13
                      
                        Combination spanner #18
                      
                        Combination spanner #19
                      
                        Combination spanner #21
                      
                        Impact socket №10
                      
                        Impact socket №13
                      
                        Impact socket №21
                      
                        Wheel impact socket #17
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Hammer
                      
                        Flat Screwdriver
                      
                        Hydraulic transmission jack
                      
                        Wheel chock

All the parts you need to replace – Control Arm for M-Class (W163) and other MERCEDES-BENZ models

MERCEDES-BENZ M-Class (W163) ML 270 CDI (163.113)

Replacement: rear upper arm – Mercedes ML W163. Tip from AUTODOC experts:

The replacement procedure is identical for the right and left upper control arms.
All work should be done with the engine stopped.

Replacement: rear upper arm – Mercedes ML W163. Use the following procedure:

Step 1

Secure the wheels with chocks.

Step 2

Loosen the wheel mounting bolts.Use wheel impact socket #17.
Step 3

Raise the rear of the car and secure on supports.

Step 4

Unscrew the wheel bolts.

AUTODOC recommends:

Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Mercedes ML W163

Step 5

Remove the wheel.
Step 6

Unscrew the ABS sensor fastening from the steering knuckle.Use a drive socket #10.Use a ratchet wrench.
Step 7

Clean the fastener connecting the ball joint to the steering knuckle.Use a wire brush.Use WD-40 spray.

Step 8

Unscrew the top fastening of the ball joint.Use a combination spanner #19.
Step 9

Disconnect the ball joint from the steering knuckle.Use a hammer.
Step 10

Remove the shock strut mount cap.Use a flat screwdriver.
Step 11

Clean the fasteners of the shock strut upper mount. Use a wire brush.Use WD-40 spray.

Step 12

Loosen the upper fastener of the shock strut mount.Use a combination spanner #13.Use a drive socket #13.Use a ratchet wrench.
Step 13

Clean the stabiliser link fasteners.Use a wire brush.Use WD-40 spray.

Step 14

Unscrew the fastener connecting the stabilizer link to the control arm.Use a combination spanner #13 (2 pieces).
Step 15

Unscrew the fasteners connecting the stabiliser link to the stabiliser bar.Use a combination spanner #13.
Step 16

Unscrew the front arm fastener. Use a combination spanner #18 (2 pieces).
Step 17

Remove the fastening bolt. Use a hammer.

Step 18

Unscrew the rear fastener connecting the control arm to the subframe.Use a combination spanner #18 (2 pieces).
Step 19

Unscrew the lower arm fastening.Use a combination spanner #21.Use a drive socket #21.Use a ratchet wrench.

Step 20

Remove the fastening bolts.

Step 21

Detach the lower control arm.
Step 22

Remove the fastening bolt.

Step 23

Remove the upper control arm.
Step 24

Clean the mounting seats and the thread of the suspension arm. Use a wire brush.Use WD-40 spray.

Step 25

Install a new upper control arm.

Replacement: rear upper arm – Mercedes ML W163. Professionals recommend:

During the installation process, use only new bolts and nuts.Do not damage the ball joint cover.Position the control arm according to its mounting holes.
Step 26

Install the fastening bolts.

Step 27

Attach the lower control arm.Use a flat screwdriver.

Step 28

Install the fastening bolts. Use a hammer.
Step 29

Connect the ball joint to the steering knuckle.

Step 30

Screw the fasteners of the ball joint.Use a combination spanner #19.
Step 31

Tighten the upper fastener of the shock absorber strut mount.Use a combination spanner #13.Use a drive socket #13.Use a torque wrench.Tighten it to 40 Nm torque.

Step 32

Install the shock strut mount cap.
Step 33

Tighten the top fastening of the ball joint.Use a combination spanner #19.Use a torque wrench.Tighten it to 70 Nm torque.
Step 34

Screw in the fastener that connects the ABS sensor to the rear knuckle. Use a drive socket #10.Use a ratchet wrench.

Step 35

Support the arm. Use a hydraulic transmission jack.
Step 36

Tighten the lower arm fastening.Use a combination spanner #21.Use a drive socket #21.Use a torque wrench.Tighten it to 70 Nm torque.
Step 37

Tighten the rear fastener connecting the control arm to the subframe.Use a combination spanner #18 (2 pieces).Use a torque wrench.Tighten it to 75 Nm torque.
Step 38

Tighten the front fastener connecting the control arm to the subframe. Use a combination spanner #18 (2 pieces).Use a torque wrench.Tighten it to 75 Nm torque.
Step 39

Remove the support from under the arm.

AUTODOC recommends:

Replacement: rear upper arm – Mercedes ML W163. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.

Step 40

Tighten the fastener connecting the stabilizer link to the stabilizer bar.Use a combination spanner #13.Use a torque wrench.Tighten it to 55 Nm torque.
Step 41

install the rod fastening to the stabilizer and tighten it.Use a combination spanner #13.Use a torque wrench.Tighten it to 55 Nm torque.
Step 42

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.

Step 43

Clean the brake disk surface.Use a brake cleaner.

Replacement: rear upper arm – Mercedes ML W163. Tip from AUTODOC:

After applying the spray, wait a few minutes.
Step 44

Install the wheel.

AUTODOC recommends:

Important! Hold the wheel while screwing in the fastening bolts. Mercedes ML W163
Step 45

Screw in the wheel bolts.Use wheel impact socket #17.

Step 46

Lower the car and working in a cross order, tighten the wheel bolts.Use a torque wrench.Tighten it to 120 nm torque.

Step 47

Remove the jacks and chocks.

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