Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car


Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
+ Automatic transmission
+ Coupling
- Brake system
   Specifications
   Arrangement of components of the ASR/ETS traction control system
   Arrangement of components of the amplifier of emergency brake application (BAS)
   Arrangement of components of the ESP system
   Dismantling and assembly of the "Tandem" main brake cylinder (MBC) (model 140.028/032/033/135)
   Removal, installation and check of serviceability of functioning of the servo-driver of the vacuum amplifier of brakes
   Removal and installation of a brake support
   Check of thickness of a brake disk and overlays of brake shoes
   Removal and installation of blocks of the parking brake
   Removal and installation of a forward cable of the drive of the parking brake
   Adjustment of the parking brake
   Wheel ABS sensors - installation details
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment






Specifications

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

Design Hydraulic, double-circuit with the vacuum amplifier. Electronic antistrange system (stability stabilization - ESP), the amplifier of emergency brake application (BAS) and system of anti-blocking of brakes (ABS)
Brake mechanisms Disk
Brake disks From composite material aluminum + steel, ventilated on forward wheels, integral with perforation on back wheels
The parking brake foot, with the pedal drive

Brake mechanisms of forward wheels

Thickness of frictional overlays of blocks of back brake mechanisms, mm

Model 140.032/033 on 12.91, 140.134 on 12.91 and 140.135

New blocks
18.5
Admissible wear
Without a substrate
2
Taking into account a substrate (for THAT)
13
Operation of the indicator of wear
2.5

Model 140.134 till 12.91

New blocks
28
Admissible wear taking into account a substrate
25.4
Admissible wear for THAT
26

Model 140.28/042/043/050/051/056/057 / 063/070/076/135, 140.032/033 with 01.92 and 140.134 from 01.92

New blocks
19.3
Admissible wear
Without a substrate
2
Taking into account a substrate (for THAT)
13
Operation of the indicator of wear
2.5

Models 140.028/032/033/134/135 and 140.042/043 / 050/051/056/057/063/070/076

New blocks
15.5
Admissible wear
Without a substrate
2
Taking into account a substrate (for THAT)
11
Operation of the indicator of wear
2.5

Dimensional characteristics of forward brake disks, mm

Minimum admissible thickness
25.4 (with 91 g 27.4)

Models 140.134, 140.028/042/043/050/051/056 / 076/135 and 140.032/033 from 01.92

Thickness of a new disk
30
Admissible wear of a disk
27.4
Admissible wear for THAT
28

Model 140.032/033 from 01.92

Thickness of a new disk
28
Admissible wear of a disk
25.4
Admissible wear for THAT
26

Dimensional characteristics of components of the brake mechanism

Diameter of the new case of a support, mm
Support of a 2-piston design (model
140.03/1 on 12.91 (ATE 57)
56.99-57.04
Support of a 4-piston design
Model 140.02/04/05/06/07 (Girling/Lucas
with a diameter of 40/44)
39.98 - 40.03
Model 140.03/1 from 01.92 (Girling/Lucas
with a diameter of 40/44)
39.98 - 40.03
Width, mm
Support of a 2-piston design (model
140.03/1 on 12.91 (ATE 57)
90 + 0.2
Support of a 4-piston design
Model 140.02/04/05/06/07 (Girling/Lucas
with a diameter of 40/44)
43.98 - 44.03
Model 140.03/1 from 01.92 (Girling/Lucas
with a diameter of 40/44)
43.98 - 44.03
Diameter of a brake disk, mm
Support of a 2-piston design (model
140.03/1 on 12.91 (ATE 57)
310
Support of a 4-piston design
Model 140.02/04/05/06/07 (Girling/Lucas
with a diameter of 40/44)
100 + 0.2
Model 140.03/1 from 01.92 (Girling/Lucas
with a diameter of 40/44)
100 + 0.2
Thickness of a brake disk, mm
Support of a 2-piston design
(model 140.03/1 on 12.91 (ATE 57)
28

Brake mechanisms of back wheels

Minimum admissible diameter of brake drums, mm
160.2

Dimensional characteristics of back brake disks, mm

Minimum admissible thickness

On 90 g of the issue.
8.3
With 91 g of the issue.
Integral
9.8
Ventilated
19.4

Model 140.028/032/033, 140.134/135

Thickness of a new disk
12
Admissible wear of a disk
9.8
Admissible wear for THAT
10.5

Model 140.042/043/050/051/056, 140.057 / 063/070/076

Thickness of a new disk
22
Admissible wear of a disk
19.4
Admissible wear for THAT
20

Main brake cylinder

Diameter of the pushing GTTs piston, mm
25.4
Diameter of the GTTs floating piston, mm
19:05
Moving of the pushing piston to GTTs, mm
17
Moving of the floating piston to GTTs, mm
15

Hydraulic actuator

Dependence of pressure in a hydraulic actuator from effort of pressing a pedal of a foot brake (with a pressure in the inlet pipeline of 0.75-0.8 bars), bar

100 N
Model 140.02/03/1 (ATE T52 4A 225 210
or Lucas LSC 115)
35-45
Model 140.04/05/06/07 (ATE T52/4A 255 225)
35-47
150 N
Model 140.02/03/1 (ATE T52 4A 225 210
or Lucas LSC 115)
53-63
Model 140.04/05/06/07 (ATE T52/4A 255 225) 57-69
200 N
Model 140.02/03/1 (ATE T52 4A 225 210 or Lucas LSC 115)
71 - 81
Model 140.04/05/06/07 (ATE T52/4A 255 225)
78 - 92
250 N
Model 140.02/03/1 (ATE T52 4A 225 210
or Lucas LSC 115)
87-98
Model 140.04/05/06/07 (ATE T52/4A 255 225)
95-105

Vacuum amplifier of brakes

Diameter of the vacuum amplifier, mm

Model 140.02/03/1 (ATE T52/4A 225 210
or Lucas LSC 115)
203/228.6
Model 140.04/05/06/07 (ATE T52/4A 255 225)
228.6/254

Strengthening coefficient

Model 140.02/03/1 (ATE T52/4A 225 210 or Lucas LSC 115)
5.6
Model 140.04/05/06/07 (ATE T52/4A 255 225)
6.85

Efforts of tightening of threaded connections, Nanometer

The moments of an inhaling of fixture are given also in the text of the Head and on some illyustratsiyakh*.

* The moments of an inhaling highlighted in the text in bold type are subject to exact observance; the efforts which are not highlighted in bold type are given only approximately.

Back nave
320
Forward support to the holder
35
Back support to the holder (TDI)
115

The holder of a support to a fist

Forward wheels
115
Back wheels
To 07.93 g
115
After 08.93 g
50
Vacuum tube to the vacuum amplifier
30
Nut of fastening of the vacuum amplifier
to an arm
20
Brake hose to a brake tube
14
Brake hose to a brake support
18
Bolt of fastening of the sensor of frequency
rotations of a forward wheel
22
Bolt of fastening of the sensor of frequency
rotations of a back wheel
8

Nuts of tips of steering drafts

S280, S320, S300 TDI
50
S420, S500, S600
55

Wheel bolts

S280, S320, S420, S500, S600
150
S300 TDI
110