Mercedes S-Class W-220

since 1998 release

Repair and operation of the car

Mercedes W220
+ Mercedes-Benz cars of the class S (W220)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
- Automatic transmission
   Problems of the block of electronic control and the operating signals
   Search of malfunctions - the general information
   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 V2, VZ 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
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment

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 of 44 g and an external disk 41 and

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 of KZ
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 44c 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 KZ is specified in table 5. 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.