Remove/install front axle transverse control arm

AR33.20-B-1452B

Remove/install front axle transverse control arm

04.08.2020

Front axle

739.39 in model 382.189

1

Transversal control arm

3.2

Outer lock ring

2

Joint adapter

3.3

Inner lock ring

3

Pivot shaft on the frame

4

Castle nut

3.A

Pivot shaft on the front axle

5

Front axle

3.B

Tapered portion of the pivot shaft

6

Fastening bolt

3.C

Screw of the castle nut

7

transverse strut bracket

3.D

Cotter pin hole

8

Cotter pin

3.1

Swinging elastic pad



Remove

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

1

Place the vehicle on a suitable lift

 The most convenient and safe way to work under this vehicle is using a lift with adequate capacity.
Subsequently, to remove and install the suspension components of each axle, the vehicle should be supported by the frame, both at the front and at the rear, on four or six large stands.

2

If necessary, remove the wheels

AR40.10-B-1101A

 Where a suitable lift is used, remove the wheels is not necessary.

3

Remove the screws (6) securing the transversal armature (1) to the bracket (7) embedded in the frame structure

 Lift the front axle with the lift so that the bar is not forced.

4

Remove the cotter pin (8), the castle nut (4) and remove the pivot support shaft (3.A) from the front axle (5)

 Removal:
To remove the transverse strut from the front axle, you have to remove the cotter pin (8) and the castle nut (4). Even removing the lock rings (3.2, 3.3), the joint is not released from the axle.
Take care when removing so as not to damage the housing on the front axle or the thread.
Use a copper billet or an appropriate conventional extractor.



Clean

5

Clear all the components of the transverse armature (1)

 Clean the pivot support shaft and the respective mounting on the.
Avoid the contact of the rubber buffers and bushings with solvents or other detergent fluids.



Check

6

inspect all components of the transverse armature (1) and the support shaft secured to the front axle

Replace:



Cross strut damaged or deformed.

Deformed or worn strut support shaft secured to the front axle.

Castle nut, if necessary.

Cotter pin of the castle nut.

7

Inspect the condition of the transverse strut pivot pads

AR33.20-B-1452-01B

 In case they show any signs of wear, replace the eye rubber buffers.



Install

8

Install the joint shaft (3.A) on its housing on the front axle

 Apply to the contact surface a light coat of lubricant to prevent further oxidation.

Grease, DB supply specification 6804 - Class 267.0

*BR00.45-Z-1107-06A

9

Install and tighten the castle nut (4) and the new cotter pin (8)

 Apply the specified torque and control the position of the castle nut, so that the new cotter pin enters seamlessly into its housing.

 Pivot axis of the front cross arm on the axle

*BA32.22-B-1007-03C

10

With the vehicle supported by the frame, move the front axle (5) until the pivot shaft (3.A) of the transverse armature rubber buffer matches the hole on the frame brackets (7)

 Lubricate the thread with a light coat of grease and use new flanged nuts on the screws.

Grease, DB supply specification 6804 - Class 267.0

*BR00.45-Z-1107-06A

11

Introduce the screws with flange (6) on the joint axle (3) and on the embedded mounting brackets on the structure (7)

 Front control arms on the frame

*BA32.22-B-1003-03C

12

Install the wheels in case they have been removed

AR40.10-B-1101A

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

13

Lower the vehicle from the lift

14

Check all steering adjustment values on both the front and rear axles corresponding to the vehicle

 use a suitable updated alignment device.

15

Run a test drive and check the vehicle behavior

 Air suspension

Number

Designation

Model 382.155/189

BA32.22-B-1003-03C

Front control arms on the frame

M14x1.5

Nm

150...180

M16x1.5

Nm

230...270

M18x1.5

Nm

330...390

M22x1.5

Nm

520...620

 Air suspension

Number

Designation

Model 382.155/189

BA32.22-B-1007-03C

Pivot axis of the front cross arm on the axle

M14x1.5

Nm

150...180

M16x1.5

Nm

230...270

M18x1.5

Nm

330...390

M36x1.5

Nm

950...1030

M40x1.5

Nm

600...640

Repair materials

Number

Designation

Order number

BR00.45-Z-1107-06A

Grease, DB supply specification 6804 - Class 267.0

Use corresponding commercially available repair materials.