Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car

+ Mercedes-Benz cars of class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
+ Manual transmission
- Automatic transmission
   + The automated box of gear shifting 716.6
   - Automatic transmission 722.6
      Search of malfunctions - the general information
      Problems of the block of electronic control and the operating signals
      Removal and the AT installation with the hydrotransformer
      The AT electrohydraulic control unit (AT is established)
      Dismantling and assembly of the electrohydraulic control unit
      Dismantling and assembly of a plate of gear shifting
      Case of transmission and hydrotransformer
      Multidisk brakes of B2, B3 and gear wheel of blocking at "Parking"
      Dismantling and assembly of a back hollow shaft with the back coupling of a free wheeling
      Removal and installation of a multidisk brake B1 and oil pump
      Dismantling and assembly of the oil pump
      Dismantling and assembly of a multidisk brake of B1
      Dismantling and assembly of a multidisk brake of B2
      Dismantling and assembly of an output shaft with the central and back block of planetary gear wheels
      Removal and installation of multidisk couplings K1, K2 and K3
      Dismantling and assembly of coupling of K1
      Dismantling and assembly of the leading shaft with coupling by K2 and the forward block of planetary gear wheels
      Dismantling and assembly of coupling of K3
      The blocking mechanism at "parking"
      Removal and installation of the lever of the selector of gear shifting
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Dismantling and assembly of coupling of K3

Dismantling and assembly of coupling of K3

44a — the External support
44b — the Sealing ring
44s — the Piston
44d — the Spring plate
44e, 44h — Lock rings
44f — the Disk spring
44g — the Block of disks
072 — the Stripper

Check of a gap between a lock ring (44g) and an external disk (41a)

37 — Frictional disks thickness 1.6 mm thick/new is 2.1 mm
41a — the External disk 4.0 mm thick
41b — the External disk thickness 3.5 mm thick/new is 2.8 mm
41s — the External disk 1.8 mm thick
44a — the External support of coupling K3
44g — the Lock ring
44h — the Disk spring
L — the Gap



1. Remove a lock ring (44h) from an external support.
2. Remove the block of disks (44g) and a disk spring (44f) from an external support.
3. Establish a stripper (072) on a spring plate (44d) and press it until the lock ring (44e) is not released.
4. Remove a lock ring (44e).
5. Remove a spring plate (44d) and the piston (44s) from an external support.



Assembly is carried out as it should be, the return to dismantling. Check a gap between a lock ring (44g) and an external disk (41a).

The size of gaps in coupling of K3 is specified in the table. Adjust a gap by means of a lock ring (44g). Thickness of a lock ring: 2.0, 2.3, 2.6, 2.9, 3.2 and 3.5 mm.
Gaps in coupling of K3, mm
Disk 2
Disk 3
Disk 4