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
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ gear shifting Box
- Автоматичеcкая transmission
   Search of malfunctions - the general information
   - Automatic transmission 722.5
      Removal, check of a condition and installation of the converter of rotation (hydrotransformer)
      Removal and installation of a centrifugal regulator
      Removal and installation of the sensor switch of blocking of a starter (start permission)
      Vacuum knot - installation details
      Removal, service and installation of the secondary pump (AT to No. 3652931)
      Removal and installation of a forward cover with the secondary pump
      Removal and LB3 piston installation
      Removal and installation of a back cover of transmission
      Dismantling and assembly of klapanny assembly of AT
      Dismantling and transmission assembly
      Installation and gap check in multidisk brake В3
      Gap measurement in brake В1
      Coupling of raising transfer
      Removal, installation and check of components of a brake of BS of raising transfer and KS coupling
      Dismantling and assembly of the coupling of a free wheeling
      Dismantling and assembly of planetary mechanisms
      Dismantling and assembly of coupling К1
      Coupling К2
      Lever of the selector of gear shifting
   + Automatic transmission 722.6
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Dismantling and assembly of coupling К1


Design of coupling К1

1 — the Support of external disks
2 — the Piston
3 — the Spring
4 — the Spring plug
5, 11, 16 — Lock rings
6 — the Internal disk
7, 8, 10 — External disks

12, 13, 17 — Sealing rings
15 — the Disk spring
18 — the Directing ring of the piston
19 — the Ball
020 — the Stripper
A — the Gap in coupling К1


1. Remove a lock ring (11) from an external support of external disks (1) of coupling.
2. Remove disks (6), (7), (8), (10) and a disk spring (15). Check disks on lack of wear and damages.
3. Establish a stripper (020) on the spring plug (4) and compress it until the lock ring (5) will not be released.
4. Remove a lock ring (5).
5. Remove the spring plug (4) from a spring (3).
6. Take the piston (2) of a support (1).
7. Remove sealing rings (12) and (13) from the piston.
8. Remove a lock ring (16) from a support of external disks (1).
9. Remove directing ring of the piston (18).
10. Remove a sealing ring (17).



1. Establish a new sealing ring (17).
2. Establish directing ring of the piston (18).
3. Establish a lock ring (16) in a support of external disks (1).
4. Insert sealing rings (12) and (13) into the piston (2), - sealing edges should be directed down (in the direction of arrows); establish plugs (021) and (022) in a support of external disks (1).
5. Grease plugs and sealing rings transmission liquid, carefully insert the piston (2) and press it in a support of external disks (1) without a distortion.
6. Establish the spring plug (4) and springs (3).
7. Establish a stripper (020) on the spring plug (4) and compress it.
8. Establish a lock ring (5).
9. Establish a disk spring (15) and disks (6), (7), (8) and (10) in a support (1).
10. Establish a lock ring (11). After installation press a lock ring up on the periphery before complete installation.

Gap check

Measure «A» gap, in case of need adjust it by a selection of a lock ring (11) demanded thickness (see an illustration 20.1). The nominal size of a gap of "A" in coupling К1 lies within a range of 0.7-1.3 mm. Lock rings in thickness 2.0, 2.6 and 3.0 mm are issued.