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 a multidisk brake of B2

14a — the External support of a brake B2 or the VZ piston
14b-d — Sealing rings of a brake of VZ
27 — B2 brake Piston
28 — the Directing piston ring
28a-b — Sealing rings on the directing piston ring
29, 134b — Disk springs

30 — the Spring plate
31, 134a — Lock rings
32 — the Guide of the piston of a brake of B2 and VZ
32a — the Sealing ring
134 — the Block of disks


Dismantling and assembly of a multidisk brake of B2

31 — the Lock ring

074 — the Stripper


Dismantling and assembly of a multidisk brake of B2

27 — the Piston
28 — the Directing piston ring

137 — the Valve


Dismantling and assembly of a multidisk brake of B2

And — the Oil channel of the VZ piston
In — the Oil channel of the B2 piston from a reverse side

With — the Oil channel of coupling of KZ
D — the Oil channel of the B2 piston from gear shifting


Assembly of a guide of the piston and external support of a multidisk brake B2

2 — the transmission Case
14a — the External support of a brake B2, (VZ piston)

32 — a piston Guide


B1 brake section

14a — the External support of a brake B2
27 — the B2 Piston
134a — the External disk (thickness of 6.5 mm)
134b — the External disk (thickness of 1.8 mm)
134s — the External disk (thickness of 1.8 mm)

134d — Frictional disks
134e — the Disk spring
144a — the Lock ring
L — the Gap


Dismantling

 PERFORMANCE ORDER

1. Remove a lock ring 134a.
2. Remove the block of disks of a brake B2 134 and a disk spring 134b from an external support of a brake B2.
3. Establish a stripper 074 on a disk spring 29 and squeeze it until the groove for a lock ring is not released.
4. Remove a lock ring 31.
5. Remove a spring plate 30 and a disk spring 29.
6. Disconnect the directing ring of the 28th piston and the piston of a brake B2 27 from the B3 piston 14a, having given compressed air to an opening of D.
7. Press the directing ring 28 from the B2 27 piston.
8. Remove a guide 32 from the B3 piston 14a, having given compressed air to an opening And.


Assembly

 PERFORMANCE ORDER

1. Establish a guide 32 and the VZ 14a piston in the correct situation. For this purpose, insert a guide 32 into the case of transmission 2 and tighten. Press an external support of a brake B2 14a against the stop in a guide 32. Bore on vents or a cut on an external support of a brake B2 14a have to be directed (arrow) down.
2. Insert the piston of a brake B2 27 into VZ 14a brake piston. The rounded-off ends of sealing rings 14s, 28a and 28b have to be directed outside. The rounded-off end of a sealing ring 14d has to be directed in inside.
3. Insert the directing ring of the 28th piston. The valve 137 in the directing ring of the piston has to be from above.
4. Insert a disk spring 29 and a spring plate 30.
5. Establish a stripper 074 on a disk spring 29 and squeeze it until the groove for a lock ring is not released.
6. Insert a lock ring 31.
7. Insert a disk spring 134b and the block of disks 134 on an external support of a brake B2.
8. Establish VZ brake disks together in the order presented on an illustration 109 and insert them in turn.
9. Install a press 078 on an external drive 70c.
10. Squeeze the block of disks by means of a press against the stop until the otmetochny ring is visible (a small arrow).
11. Measure a gap of L in three points between a lock ring 144a and an external disk 134a. The size of gaps in a multidisk brake 82 are provided in the table.

12. Adjust a gap a lock ring 144a if it is necessary. Thickness of a lock ring: 2.9, 3.2, 3.5, 3.8 and 4.1 mm.
13. Establish a lock ring 134a.