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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class W123 (from 1976 to 1985, the year of issue)

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Mercedes-Benz W123
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Mercedes-Benz
W123
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Driveline and rear axle
The front suspension
Rear suspension
Design and specifications
Removal, check and installation of shock absorbers
Removing and installing rear stabilizer bar
Removal and installation of the spring rear suspension
Removing and installing rear suspension assembly
The system automatically adjusting the position of the body
A steering
Brakes
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Rear suspension



Design and specifications

Independent rear suspension with helical coil springs, trailing arm, telescopic shock absorbers and stabilizer bar.

Coil springs and the upper bearing cup

Depending on the model and equipment installed on the vehicles of two types of springs in combination with the upper supporting three types of cups of different thicknesses.

Selection of spring to the supporting cup is produced at the factory and must be maintained throughout the lifetime of avoiding deterioration of the stability and controllability of the car. When replacing the spring or bearing cups sure to install parts that are identical to the former.

Characteristics of suspension springs

Type spring

Number of springs
Wire diameter, mm
Draft (P = 100 kg)
Length (P = 0 kg)

1

123.324.1404

15.95

18,45

355

2

123.324.1504

14.95

21.5

337

Characteristics of the upper support spring cups

Alphabetical index

Number of cups
The thickness of the bottom of the cup bearing, mm
The number of protrusions on the circumference of the cup

a

115.325.2244

9.5

1

b

115.325.2344

14.0

2

c

115.325.2444

19.0

3

Shock absorbers

For vehicles used gas-filled shock absorbers, oil, single-tube double acting. They are connected with the body and suspension arms.

Benchmarks rear shock absorbers

Number damper

Colour coding
Out of stock, mm

Type shock absorber

new
allowable

123.323.1700 *

One white longitudinal bar

0,0-2,0

32.0

The separating piston

123.323.6000

A white cross bar

0.0

32.0

Without separating piston

123.323.0800

A white cross bar

105,0-107,0

82.0

123.320.0413 *

A white cross bar

147,0-149,0

137.0

* Rare, as a possible equipment.

Additional combination of springs / shock absorbers for various car models

Engine model

Number of spring
Number damper

Without level adjustment

"200"

-

-

"230"

123.324.1404

-

"250"

-

123.326.0600

"280", "280E"

-

123.326.0800

With level control

"200"

-

-

"230"

123.324.1504

-

"250"

-

123.320.04113

"280", "280E"

-

-

Anti-roll bar

Characteristic

Value

The diameter of the stabilizer bar, mm

  • vehicles with 4-cylinder petrol engine

13.0 (12.0) *

  • cars with 6-cylinder petrol engine

14.5 (13.0) *

* In brackets are the data for the coupe.

Height adjuster body

The device controlling the position of the body height was installed on some models. It is hydraulically adjusts the height of the rear suspension consists of a hydraulic pump, a tank, two storage chambers and corrector position of the body.

Hydraulic pump

Hydraulic pump piston type is rotated Banded accessory drive belt from the crankshaft.

Characteristic

Value

Operating pressure at the speed of the crankshaft 900 ?± 100 min -1 kg / cm 2

130

  • minimum

125

  • maximum

160

Filing for n = 1500 min -1, l / min

0.7

Transfer (motor / pump)

0,667

Storage chambers

Each shock absorber hydraulic fluid is supplied from a separate collection chamber (pressure tank), which is under pressure hydraulic fluid designed for uniform and smooth its filing with the shock absorbers.

Characteristic

Value

The opening pressure of the valve, kgs.sm 2

  • nominal

21-25

  • minimum

15.0

Proof of body position

Mounted between the hydraulic pump and storage chambers in the cross regulator corrector position of the body determines the amount of fluid pressure supplied to the dampers via the storage chamber, in order to maintain a constant height of the rear.

Characteristic

Value

The opening pressure of the injection valve, kgf / cm2

30-36

Working fluid

Characteristic

Value

Fuel capacity hydraulic leveling system l

3.5

The difference between the liquid level marks ?«mini?» and ?«maxi?» on the dipstick, l

about 0.6

The used liquid

Aral Vitamol ZH-M or MB hydraulikol 000.989.9103

The frequency of inspection of oil when the engine

every 20,000 km

The corners of the rear axle

Characteristic

Value

Camber

from -0 ?° 20 '0 ?° to + 20'

Convergence 0.5 mm

0 ?° 0 ?° 20'-35 '

Rear wheel hub

The hub of the rear wheel is mounted on angular contact ball bearings closed.

Characteristic

Value

The thickness of the hub flange, mm

10,00

The beating of the bearing surface of the brake disc, no more, mm

0.02

  • in the assembled state

0.12

Tightening torques of the main threaded connections kgs.m

Connection Type

Value

The lower strut

4.5

Mounting anti-roll bar

  • with lock washers

19

  • without spring washers

thirty

Stabilizer coupling rod

  • metal

4.5

  • Plastic

thirty

Racks of adjusting the position of the body

  • Top Mount

thirty

  • Bottom bracket

4.5

  • hose connection

19

  • ball joint

6.5

  • hollow screw storage chamber

4.2

The pump control system of the body position

12

Proof of adjusting the position of the body

4.5

Front rear mount

  • to the bottom of the body

thirty

  • to the rear axle

11.9

Bolt drive shaft

thirty

Bolt Wheel

11.0


Rear Axle

1 - the main transfer
2 - parking brake cable
3 - half
4 - Disc
5 - outer bearing
6 - a spring suspension

7 - shock
8 - beam rear axle support
9 - propeller shaft
10 - Stabilizer
11 - trailing arm





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