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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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W123
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Automatic Transmission
Design and specifications
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Automatic Transmission




Design and specifications

Automatic, planetary, four-speed transmission with a torque converter of the company ?«Mercedes-Benz?»


Lever

The lever has six positions:

  • P - Parking
  • R - Reverse
  • N - neutral
  • D - Automatic inclusion of all forward gears
  • 3 - switch I, II and III programs
  • 2 - switch I and II programs

Index

Gearbox
722,402 *
722,112 **

Number of gears

5

5

5

Engine model

M 102

M 123 M 110

M 110 M 123

Broadcast
Ratios

I transfer

4.25

3.98

3.68

II transfer

2.41

2.39

2.41

III transmission

1.49

1.46

1.44

IV transmission

100

100

100

Reverse

5.67

5.47

5.14

* Automatic transmission for vehicles manufactured after 1980
** An automatic transmission is available in two variants of gear ratios.

Characteristic

Value

Control pressure, type 722.402 / 722.400 kg / cm

modulating pressure

2.3 / 2.9

working pressure

11,5 ?± 1,0 / 13,8 ?± 1,0

pressure centrifugal regulator

  • at a speed of 30 km / h

1.0 / 1.0

  • at a speed of 90 km / h

2.5 / 2.5


Torque converter

Characteristic

Value

The diameter of the torque converter, mm

245

Rotation frequency converter (for verification) with the brakes blocked, however, rev / min

1600-1800


Transmission Oil

Characteristic

Value

Fuel capacity of the transmission case, l

  • at the first gas station

6.6

  • When changing the oil

5.5

Used oil

ATF

Replacement interval

every 60,000 kilometers


Due to a malfunction of an automatic transmission are almost always low urovenmasla or improper adjustment of the selector or thrust enable low gear.

The oil level, if it has a temperature of about 80 ?° C, should be near the mark "MAX" on the dipstick. When the oil temperature between 20 ?° -30 ?° C level should be at the level of ?«X?» on the mark ?«MIN?».

Model

The value "X", mm

200 5.83

thirty

230

230E to 4.83

250 8.81

280

280E to 8.81

200 6.83

12

230E with 5.83

250 9.81

10

280E with 9.81


Tightening torques of the main threaded connections kgs.m

Connection Type

Value

Bolt hydraulic unit

0.8

Bolt oil sump

0.8

Drain plug oil sump and transformer

14

Bolt vacuum regulator

0.8

Phillips head screws securing the oil filter

0.4

Nut output flange

12.0

Bolt back the pump

0.8

Bolt the front cover to the front pump

20

Bolt flange leading transformer

4.2

Bolt transformer or the front cover to the gearbox housing

13

Bolt back cover to the gearbox housing

13

The nut bracket centrifugal regulator

0.6

Starter switch and reverse gear

0.8

The solenoid valve control foot gearshift

20

Plugs Socket

13

Bolt the automatic transmission to the engine block

  • M 10

5.5

  • M 12

6.5

The solenoid valve control pedal gearshift

20

Plugs Socket

13


Details automatic gearbox

1 - torque converter
2 - the front of the pump
3 - the input shaft
4 - Front planetary gear
5 - output shaft and the rear planetary gear
6 - outdoor Satellite
7 - ring gear
8 - a gear parking brake
9 - the speedometer drive gear
10 - output flange
11 - a nut of fastening of a flange
12 - Bearings
13 - cup clutch

14 - clutch drum
15 - a sealing ring
16 - piston front clutch
17 - outer clutch plates
18 - Internal clutch discs
19 - a lock ring
20 - drum rear grip
21 - the piston
22 - band brake front clutch
23 - rear band brake clutch
24 - the piston of the clutch
25 - pushers
26 - a centrifugal regulator





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