Mercedes S-Class W-140

1991-1999 of release

Repair and car operation



Mercedes S-Class
+ Mercedes-Benz Cars of a class S (W-140)
+ Operation manual
- Routine maintenance
   Specifications
   Active system of the prevention of term of approach planned THAT (ASSYST)
   Schedule of routine maintenance
   General information on control
   Check of levels of liquids, control of leaks
   Check of a condition of tires and pressure in them, designation of tires and disks of wheels, rotation of wheels
   Replacement of impellent oil and oil filter
   Check of brake system
   Check of fuel system, replacement of the fuel filter
   Check of a condition and replacement of hoses of an impellent compartment, localization of leaks
   Check of a condition of ridge belts of a streaming drive of auxiliary units
   Check of functioning of system of cooling and frost resistance of cooling liquid, liquid replacement
   Check of a condition of system of production of the fulfilled gases
   Check of level of ATF, AT filter replacement
   Visual check of tightness of automatic transmission
   Check of a condition of components of a suspension bracket and steering
   Check of a condition of protective covers of power shafts
   Check of central air of air
   Greasing of limiters of doors and cylinders of locks
   Visual control of a seat belt and safety cushion block
   Check of operability of headlights and horn
   Condition check, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery, care of it and charging
   Replacement of the salonny filter
   Replacement of brake liquid
   Check and replacement of spark plugs, check of a condition of high-voltage wires (petrol models)
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ gear shifting Box
+ Avtomaticheckaya transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



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Check of a condition of ridge belts of a streaming drive of auxiliary units

Check of a belt of a streaming drive of auxiliary units

Schemes of laying of a belt of a streaming drive of auxiliary units

The scheme of laying of a belt of a streaming drive of auxiliary units on the S280 and S320 models

1 — the Tension roller with a natyazhitel
2 — the Cranked shaft
3 — the conditioner Compressor
4 — the Fan
5 — the Air pump

6 — the Generator
7 — the Directing roller
8 — the Pump of the hydraulic booster of a steering
9 — the Water pump
10 — the Air pump


The scheme of laying of a belt of a streaming drive of auxiliary units on the S420 and S500 models

1 — the Tension roller with a natyazhitel
2 — the Cranked shaft
3 — the conditioner Compressor
4 — the Fan
5 — the Air pump

6 — the Generator
7 — the Directing roller
8 — the Pump of the hydraulic booster of a steering
9 — the Water pump
10 — the Air pump


The scheme of laying of a belt of a streaming drive of auxiliary units on the S600 models

1 — the Tension roller with a natyazhitel
2 — the Cranked shaft
3 — the conditioner Compressor
4 — the Fan
5 — the Air pump

6 — the Generator
7 — the Directing roller
8 — the Pump of the hydraulic booster of a steering
9 — the Water pump
10 — the Air pump


The scheme of laying of a belt of a streaming drive of auxiliary units on the S300TDI models

1 — the Tension roller with a natyazhitel
2 — the Cranked shaft
3 — the conditioner Compressor
4 — the Fan
5 — the Air pump

6 — the Generator
7 — the Directing roller
8 — the Pump of the hydraulic booster of a steering
9 — the Water pump
10 — the Air pump


Fingers (and using a small lamp if it is necessary) walk on all length of a belt, feeling on existence of cracks and stratifications. Also check, whether is not present on a belt of attritions and zapolirovanny sites to shine. The belt should be examined from both parties that means need of its perekruchivaniye for check of a condition of seamy side. Be in passing convinced of lack of a rust, cracks and agnails on pulleys. On a working surface of a belt existence of superficial perpendicular cracks is allowed. If these cracks do not overstep the bounds of one edge and not so deep, to replace a belt there is no need.

Check of a belt of a drive of auxiliary units

A — the New belt
B — Wear of walls - edges are pointed (at new belts they trapetseidalny)
C — Ogoleniye of a cord
D — Cracks on a back part of a belt
E — Otsloyeniye of rubber from a basis
F — Wear of an external cord

G — the Rupture of a lateral cord
H — Cracks across edges
J — Injury of edges
K — Cracks of separate edges
L — Pollution or jamming of stones between edges
M — Vyryvaniye of rubber on edges


The tension of a ridge belt is made automatically. It is necessary to check periodically a belt condition, and at detection of defects, to replace a belt.

The tension of a belt is carried out by an automatic natyazhitel and check does not need.

 PERFORMANCE ORDER

1. Switch off the engine, establish transmission in neutral situation. Lift and establish the car on supports.
2. Mark chalk a belt on well foreground.
3. A head turn the engine for a pulley of a cranked shaft in the rotation direction, i.e. to the right side so that cretaceous marking was visible. Thus a site behind a site see a belt.


Establishing a driving belt, correctly place it on pulleys - it should be strictly on the pulley center (even short-term work of incorrectly established belt can lead to its damage)


The tension of a belt can be checked by a way of strong pressing on it a thumb and definitions of degree of its deflection. Size of a deflection measure by a ruler. If the distance between centers pulleys makes from 180 to 280 mm, the size of a deflection should equal 6 mm. If the distance between centers pulleys is in limits between 300 and 400 mm, the deflection should be 13 mm.

In the presence of one or several of the specified damages maple it is necessary to replace a belt with the new.