Mercedes-Benz:: M-class W163:: Suspension bracket and steering

12. Suspension bracket and steering

Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type.

General parameters
Wheel base, track, diameter of a turn, mm	See Specifications to the Head Governing bodies and methods of safe operation
Bridges
Control sizes of geometrical parameters of the unit of forward and back bridges, mm
V1, V2, V3, N8, N9, N10	3
Forward suspension bracket
Design	Completely independent, 4-lever, with telescopic shock-absorbers, the torsion springs, a stretcher and the stabilizer of cross stability (the torsion bar).
Back suspension bracket
Design	Completely independent, multilever, rack-mount type (telescopic shock-absorbers and screw springs), with a stretcher and the stabilizer of cross stability (the torsion bar).
Steering
Design
Drive	The hydrostrengthened rack transfer with valvate entrance knot and two cross steering drafts, hydrostrengthening is organized according to the scheme (SPS), sensitive to speed of the movement of the car
Steering column	Safety, telescopic, with function of shift when landing and adjustment of an inclination
Steering mechanism	With the circulating balls
Quantity of turns of a steering wheel at rotation from an emphasis against the stop	2.8
Type and volume of GUR liquid See.	Specifications to the Head the Current leaving and service
Pressure in a path of GUR, bar	92 ÷ 100
Road gleam
Control corner
Forward axis
Except models 163.174 (ML 55 AMG)	6.4 °
Model 163.174 (ML 55 AMG)	4.0 °
Back axis
Except models 163.174 (ML 55 AMG)	4.7 ° ± 1.0 °
Model 163.174 (ML 55 AMG)	2.9 °
Angles of installation of wheels
Forward wheels
Convergence
At the rectilinear provision of forward wheels	0 °10' ± 10'
In turns (at an angle 20 °)	2 °06' ± 30'
Disorder depending on installation of a road gleam of a forward axis (with the admission ± 20')
Nominal rates
Except models ML 55 AMG
- 2.6 °	- 0 °20'
- 1.9 °	- 0 °20'
- 1.2 °	- 0 °20'
- 0.5 °	- 0 °20'
- 0.2 °	- 0 °20'
0.9 °	- 0 °21'
1.6 °	- 0 °22'
2.2 °	- 0 °24'
2.9 °	- 0 °25'
3.6 °	- 0 °27'
4.3 °	- 0 °29'
5.0 °	- 0 °32'
5.7 °	- 0 °35'
6.4 °	- 0 °38'
7.0 °	- 0 °42'
7.7 °	- 0 °46'
8.4 °	- 0 °50'
9.1 °	- 0 °54'
9.8 °	- 0 °59'
10.5 °	- 1 °04'
11.2 °	- 1 °09'
Models ML 55 AMG	Data are not provided
The maximum admissible difference between disorders of the right and left wheel	20'
Выбег depending on installation of a road gleam of axes (with the admission ± 30')
Except models ML 55 AMG	See Tab. 1
Models ML 55 AMG	Data are not provided
Back wheels
Convergence	0 °20' ± 7'
Disorder depending on installation of a road gleam of a back axis (with the admission ± 20')
Nominal rates
Except models ML 55 AMG
7.8	- 0 °52'
7.2 °	- 0 °48'
6.6 °	- 0 °45'
6.0 °	- 0 °44'
5.5 °	- 0 °40'
4.9 °	- 0 °37'
4.3 °	- 0 °35'
3.7 °	- 0 °33'
3.2 °	- 0 °32'
2.6 °	- 0 °31'
2.0 °	- 0 °30'
1.4 °	- 0 °29'
0.9 °	- 0 °29'
0.3 °	- 0 °29'
- 0.3 °	- 0 °29'
- 0.9 °	- 0 °30'
- 1.4 °	- 0 °31'
- 2.0 °	- 0 °32'
- 2.6 °	- 0 °33'
- 3.2 °	- 0 °35'
- 3.7 °	- 0 °37'
Models ML 55 AMG	Data are not provided
The maximum admissible difference between disorders of the right and left wheel	20'
Выбег depending on installation of a road gleam of axes (with the admission ± 0.5 °)	See Tab. 2
Except models ML 55 AMG	See Tab. 2
Efforts of tightening of threaded connections, Nanometer
Forward suspension bracket
Bolts of fastening of a stretcher to a car frame	200
Самоконтрящиеся bolts of fastening of the driveshaft to a connecting flange of forward differential	40
Bolts of fastening of shock-absorbers to the lower cross levers	130
Самоконтрящиеся nuts of fastening of shock-absorbers to longitudinal beams of a frame	30
Nuts of bolts of fastening of racks of the stabilizer of cross resistance (torsion bar) to a frame	100
Bolts of fastening of a bar of the stabilizer of cross resistance (torsion bar) to cross levers	68
Nuts of bolts of fastening of assembly brackets of racks of the stabilizer of cross stability (torsion bar)	50
Nut of a bolt of a coupling collar of fixing of the torsion bar	15
Bolts of profile plugs of the torsion springs	23
Screws of face covers of persistent levers of the torsion springs	23
Bolts of fastening of the lower cross levers to a stretcher
Lobbies	135
Back	30
Самоконтрящиеся nuts of fastening of the top spherical support in rotary fists	50
Koronchaty nuts of fastening of the lower spherical support in rotary fists	300
Bolts of fastening of the top cross levers to a frame	120
Back suspension bracket
Самоконтрящиеся bolts of fastening of a stretcher to a frame	200
Самоконтрящиеся nuts of fastening of shock-absorbers to the lower levers	85
Самоконтрящиеся nuts of fastening of shock-absorbers to side beams of a frame	20
Bolts/nut of fastening of a control sheaf to a stretcher and a frame	20
Самоконтрящиеся nuts of fastening of the top cross levers to side beams of a frame	120
Самоконтрящиеся nuts of fastening of the top spherical support in stupichny assemblies	50
Koronchaty nuts of fastening of the lower spherical support in stupichny assemblies	300
Drain stopper of back differential	50
Самоконтрящиеся bolts of fastening of the back driveshaft to a connecting flange of back differential	50
Bolts of fastening of a longitudinal bracket of fixing of the fuel tank	20
Nuts of connecting bolts of fastening of the stabilizer of cross resistance (torsion bar) to the lower cross levers	28
Bolts of collars of fastening of a bar of the stabilizer of cross resistance to a stretcher	28
Самоконтрящиеся nuts of fastening of the lower cross levers to a stretcher	135
Самоконтрящиеся nuts of fastening of shock-absorbers to screw springs of rack-mount assemblies	30
Самоконтрящиеся nuts of fastening of the lower spherical support to cross levers	125
Самоконтрящиеся nuts of fastening of longitudinal extensions to a stretcher	100
Самоконтрящиеся nuts of fastening of longitudinal extensions to stupichny assemblies	55
Steering
Самоконтрящиеся nuts of fastening of entrance knot of the steering mechanism to a shaft of a steering column and rack transfer	28
Carving unions of connection of pressure head and returnable lines to a case of the steering mechanism	15
Hollow bolts of nipple sockets of pressure head and returnable lines on a case of the steering mechanism	33
Fastening of the pressure head line hydraulic the treatise of GUR to the steering pump (M16x1.5)	45
Fastening of the returnable line to the steering pump	2
Pressure head hose of a tandem component of pump assembly	25
Bolts of fastening of the steering pump
Standard	25
Self-cut
The carving is not cut	35
The carving is cut	20
Самоконтрящиеся nuts of fastening of tips of steering thirsts for rotary fists	55
Lock-nuts of fixing of steering drafts in internal tips	50
Fastening of internal tips of steering thirsts for a steering rack	110
Bolts of fastening of the steering mechanism to a stretcher	50
Nut of fastening of the lever of adjustment of a steering column	4
Bolt of fastening of the contact switch to the lever of adjustment of a steering column	1
Bolt of fastening of a steering wheel to a shaft of a steering column	80
Bolts of fastening of a shirt of a steering column (top and lower)	20

Tab. 1

Road gleam
forward axis

Выбег forward wheels

hail

1.6

- 22.6

6 ° 06'

6 ° 12'

6 ° 18'

6 ° 23'

6 ° 26'

6 ° 32'

6 ° 38'

6 ° 44'

6 ° 50'

6 ° 53'

6 ° 59'

7 ° 06'

7 ° 11'

7 ° 14'

2.0

- 19.7

6 ° 04'

6 ° 10'

6 ° 16'

6 ° 22'

6 ° 25'

6 ° 31'

6 ° 37'

6 ° 43'

6 ° 49'

6 ° 52'

6 ° 57'

7 ° 03'

7 ° 09'

7 ° 12'

2.4

- 16.6

6 ° 02'

6 ° 08'

6 ° 14'

6 ° 20'

6 ° 23'

6 ° 29'

6 ° 36'

6 ° 41'

6 ° 47'

6 ° 50'

6 ° 56'

7 ° 02'

7 ° 07'

7 ° 10'

2.8

- 13.9

6 ° 01'

6 ° 07'

6 ° 13'

6 ° 18'

6 ° 22'

6 ° 28'

6 ° 34'

6 ° 40'

6 ° 45'

6 ° 48'

6 ° 54'

7 ° 00'

7 ° 06'

7 ° 09'

3.2

- 10.9

6 ° 00'

6 ° 05'

6 ° 11'

6 ° 17'

6 ° 20'

6 ° 26'

6 ° 32'

6 ° 38'

6 ° 43'

6 ° 46'

6 ° 52'

6 ° 58'

7 ° 04'

7 ° 07'

3.6

- 8.0

5 ° 58'

6 ° 04'

6 ° 09'

6 ° 15'

6 ° 18'

6 ° 24'

6 ° 30'

6 ° 36'

6 ° 42'

6 ° 44'

6 ° 50'

6 ° 56'

7 ° 02'

7 ° 06'

4.0

- 5.1

5 ° 56'

6 ° 02'

6 ° 08'

6 ° 13'

6 ° 16'

6 ° 22'

6 ° 28'

6 ° 34'

6 ° 40'

6 ° 43'

6 ° 48'

6 ° 55'

7 ° 01'

7 ° 04'

4.4

- 2.2

5 ° 54'

6 ° 00'

6 ° 06'

6 ° 12'

6 ° 15'

6 ° 21'

6 ° 26'

6 ° 32'

6 ° 38'

6 ° 41'

6 ° 47'

6 ° 53'

6 ° 59'

7 ° 02'

4.7

0.0

5 ° 53'

5 ° 59'

6 ° 05'

6 ° 10'

6 ° 14'

6 ° 19'

6 ° 25'

6 ° 31'

6 ° 37'

6 ° 40'

6 ° 46'

6 ° 52'

6 ° 58'

7 ° 01'

5.0

2.2

5 ° 52'

5 ° 58'

6 ° 04'

6 ° 09'

6 ° 12'

6 ° 18'

6 ° 24'

6 ° 30'

6 ° 36'

6 ° 39'

6 ° 45'

6 ° 51'

6 ° 57'

7 ° 00'

5.4

5.1

5 ° 50'

5 ° 56'

6 ° 03'

6 ° 08'

6 ° 11'

6 ° 17'

6 ° 22'

6 ° 29'

6 ° 34'

6 ° 37'

6 ° 43'

6 ° 49'

6 ° 55'

6 ° 58'

5.8

8.0

5 ° 48'

5 ° 54'

6 ° 00'

6 ° 06'

6 ° 09'

6 ° 15'

6 ° 21'

6 ° 27'

6 ° 33'

6 ° 36'

6 ° 41'

6 ° 47'

6 ° 53'

6 ° 56'

6.1

10.0

5 ° 47'

5 ° 53'

5 ° 59'

6 ° 05'

6 ° 08'

6 ° 14'

6 ° 20'

6 ° 28'

6 ° 32'

6 ° 35'

6 ° 41'

6 ° 46'

6 ° 52'

6 ° 55'

6.4

12.4

5 ° 46'

5 ° 52'

5 ° 58'

6 ° 04'

6 ° 07'

6 ° 13'

6 ° 19'

6 ° 25'

6 ° 30'

6 ° 33'

6 ° 39

6 ° 45'

6 ° 51'

6 ° 54'

6.8

15.3

5 ° 44'

5 ° 50'

5 ° 56'

6 ° 02'

6 ° 05'

6 ° 11'

6 ° 17'

6 ° 23'

6 ° 29'

6 ° 32'

6 ° 38'

6 ° 44'

6 ° 49'

6 ° 52'

7.2

18.2

5 ° 43'

5 ° 49'

5 ° 54'

6 ° 00'

6 ° 03'

6 ° 09'

6 ° 15'

6 ° 21'

6 ° 28'

6 ° 30'

6 ° 36'

6 ° 42'

6 ° 48'

6 ° 51'

7.4

19.7

5 ° 41'

5 ° 47'

5 ° 53'

5 ° 58'

6 ° 02'

6 ° 08'

6 ° 14'

6 ° 20'

6 ° 27'

6 ° 29'

6 ° 35'

6 ° 41'

6 ° 47'

6 ° 50'

7.6

21.2

5 ° 41'

5 ° 47'

5 ° 53'

5 ° 55'

6 ° 02'

6 ° 08'

6 ° 14'

6 ° 19'

6 ° 26'

6 ° 28'

6 ° 34'

6 ° 40'

6 ° 46'

6 ° 49'

7.8

22.6

5 ° 40'

5 ° 48'

5 ° 52'

5 ° 56'

6 ° 01'

6 ° 07'

6 ° 13'

6 ° 17'

6 ° 25'

6 ° 28'

6 ° 34'

6 ° 40'

6 ° 45'

6 ° 48'

8.0

24.1

5 ° 39'

5 ° 46'

5 ° 51'

5 ° 57'

6 ° 00'

6 ° 06'

6 ° 12'

6 ° 16'

6 ° 24'

6 ° 27'

6 ° 33'

6 ° 35'

6 ° 44'

6 ° 47'

40.5

35.5

30.1

25.0

22.3

17.0

11.8

6.6

1.4

- 1.2

- 6.4

- 11.7

- 16.9

- 19.5

Dorozh-
ny
gleam
back
axes

6.5

5.9

5.3

4.7

4.4

3.8

3.2

2.6

2.0

1.7

1.1

0.5

- 0.1

- 0.4

hail

* Way of calculation: Angle of installation of a gleam of a forward axis (5.8 °) x angle of installation of a gleam of a back axis (2.6 °) = Vybeg (6 °27' ± 30')

Tab. 2

Road
gleam
forward axis

Выбег back wheels

hail

1.6

- 22.6

- 8.0'

2.0

- 19.7

- 8.1'

- 8. 1'

2.4

- 16.6

- 8.2'

- 8. 2'

2.8

- 13.9

- 8.2'

- 8. 2'

3.2

- 10.9

- 8.3'

- 8. 3'

3.6

- 8.0

- 8.3'

- 8. 3'

4.0

- 5.1

- 8.4'

- 8. 4'

4.4

- 2.2

- 8.4'

- 8.5'

- 8. 5'

4.7

0.0

- 8.5'

- 8. 5'

5.0

2.2

- 8.5'

- 8. 5'

5.4

5.1

- 8.6'

- 8. 6'

5.8

8.0

- 8.7'

- 8. 7'

6.1

10.0

- 8.7'

- 8. 7'

6.4

12.4

- 8.7'

- 8.8'

- 8. 8'

6.8

15.3

- 8.8'

- 8. 8'

7.2

18.2

- 8.9'

- 8. 9'

7.4

19.7

- 8.9'

- 8. 9'

7.6

21.2

- 8.9'

- 8. 9'

7.8

22.6

- 9.0'

- 9. 0'

8.0

24.1

- 9.0'

- 9. 0'

40.5

35.5

30.1

25.0

22.3

17.0

11.8

6.6

1.4

- 1.2

- 6.4

- 11.7

- 16.9

- 19.5

Dorozh-
ny
gleam
back
axes

6.5

5.9

5.3

4.7

4.4

3.8

3.2

2.6

2.0

1.7

1.1

0.5

- 0.1

- 0.4

hail

* Way of calculation: Angle of installation of a gleam of a forward axis (5.0 °) x angle of installation of a gleam of a back axis (3.2 °) = Vybeg (8 °5' ± 0,5 °)

When performing repair or service of components of a suspension bracket and steering often there are problems with an otvorachivaniye of the "stuck" bolts and nuts. Fixture elements located under the car bottom constantly are exposed to external influences and there is nothing surprising that over time they begin to rust and to collapse partially. Use of brute force at an otpuskaniye of such "stuck" fixture is accompanied by risk of its damage. For a start moisten the element which is not giving in to an otvorachivaniye with a small amount of the special getting liquid (WD40 type), having allowed the last to impregnate rust layers properly. Remove with a wire brush external deposits from available sites of carving surfaces. Sometimes the sharp blow by the hammer on a nut through a drift helps to destroy the rust filling gaps between rounds of a carving joint, - try not to allow damages of a carving as a result of a drift soskakivaniye. Use at an otvorachivaniye of the "stuck" fixture of a long neck allows to increase considerably the enclosed torque, however it is necessary to remember that use of extenders complete with drives of ratchet type is accompanied by risk of failure of the returnable mechanism, not to mention a possibility of getting injured.

Fixture damaged in the course of an otpuskaniye is subject to replacement without fail.

As the majority of the procedures described in the present Chapter is made on the car lifted above the ground, it is necessary to take care beforehand of options of reliable fixing of the vehicle in the lifted situation, - prepare strong props. For a poddomkrachivaniye of the car use hydraulic jacks of podkatny type, - you remember that the onboard jack which is included in a basic equipment is intended only for a temporary poddomkrachivaniye of the car when replacing of the failed wheel. The hydraulic jack can be used also for posting of some components of a suspension bracket at implementation of this or that procedure.

Under no circumstances do not perform any works under the car withheld in the lifted situation only by means of a jack(s)!