Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car



Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
- Automatic transmission
   Specifications
   Search of malfunctions - the general information
   - Automatic transmission 722.5
      Removal, check of a state and installation of the converter of rotation (hydrotransformer)
      Removal and installation of the centrifugal regulator
      Removal and installation of the sensor switch of blocking of a starter (permission of start)
      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 installation of the LB3 piston
      Removal and installation of a back cover of transmission
      Dismantling and assembly of valvate assembly of AT
      Dismantling and assembly of transmission
      Installation and check of a gap in a multidisk brake of B3
      Measurement of a gap in B1 brake
      Coupling of the raising transfer
      Removal, installation and check of components of a brake of BS of the raising transfer and coupling of KS
      Dismantling and assembly of the coupling of a free wheeling
      Dismantling and assembly of planetary mechanisms
      Dismantling and assembly of coupling of K1
      Coupling of K2
      Gear shifting selector lever
   + Automatic transmission 722.6
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment






Dismantling and assembly of transmission

Section 1

Dismantling

Details of installation of components of transmission (section 1)

3 — AT case Pallet
3a — Laying
4, 7, 8, 108, 140 — Bolts
5 — the Oil filter
13 — the Lower cover
14 — the Big intermediate plate
15 — the Directing oil pipe

98 — a gear shifting Cable
135 — the Fixing finger
142 — the Lock spring
151 — the Adjusting spring and lock laying
152 — the Blocking lever
Y3/2 — the Electromagnetic valve


 PERFORMANCE ORDER

1. Remove the transmission from the rotation converter.
2. Remove a cable of gear shifting (98) with the vacuum drive.
3. Remove the electromagnetic valve (Y3/2).
4. Disconnect the transmission from arms.
5. Remove the case of valves (9).
6. Remove the lower cover (13) with an intermediate plate (14).
7. Remove single-channel valves, a brake tape of a brake B2, a maslootrazhatel and the temperature gate from the transmission case.

Assembly

Assembly is carried out as it should be, the return to dismantling.

Section 2

Dismantling

Details of installation of components of transmission (section 2)

10 — the Forward cover with the secondary pump
17, 44a, 48 — Sealing rings
18, 45, 58, 73 — Bolts
19, 72 — Laying
20 — the Secondary pump
43 — the Lock ring
44 — the Ventilating stopper
46 — the Cover

50 — the Centrifugal regulator
59 — pressure modulator Valve
59a — the Finger
60 — pressure Modulator
62 — the Nut
4 — the Flange
70 — the Back cover of the transmission
S16/4 — the Switch of blocking of a starter


 PERFORMANCE ORDER

1. Disassemble the transmission.
2. Remove the modulator (60).
3. Remove the switch of blocking of a starter (S16/4).
4. Remove the secondary pump (see the Section Removal, service and installation of the secondary pump (AT to No. 3652931)).
5. Remove a ventilating stopper (44) and a sealing ring (44a).
6. Remove a forward cover of the transmission (10) with the secondary pump (20).
7. Remove a flange (64).
8. Disconnect a lock ring (43), a cover (46) and a sealing ring (48).
9. Remove a back cover of the transmission (70).

Assembly

Assembly is carried out as it should be, the return to dismantling.

Section 3

Dismantling

Details of installation of components of transmission (section 3)

73 — the Plastic guide
74 — the Doggie of the parking brake
75 — Rastyazhnaya a spring
77 — the Sealing ring
82 — the Blocking plate with draft
82a — the Bolt
36 — the Output shaft

165, 188 — the Lock ring
170 — the Crown gear wheel
172 — the Basic clutch plate of the raising transfer
192 — the Piston of coupling of the raising transfer
Y3/1x1 — the Stopper


 PERFORMANCE ORDER

1. Disassemble the transmission (see sections 1 and 2).
2. Remove a rastyazhny spring (75) and unhook a doggie of the parking brake (74).
3. Take a plastic guide (73).
4. Remove a blocking plate (82) with draft, having turned off a bolt (82a).
5. Remove a stopper (Y3/1x1) of electromagnetic valves and a sealing ring (77) from the transmission case.
6. Remove a brake of the raising transfer and coupling.

Assembly

Assembly is carried out as it should be, the return to dismantling.

Section 4

Dismantling

Details of installation of components of transmission (section 4)

15 — B2 brake Piston
17 — B2 brake piston Cover
23, 41 — Lock rings
27 — the Brake tape of a brake B2
28 — the Finger
29 — B2 brake Bearing
30 — the Brake tape of a brake B1
31 — B1 brake Bearing
33, 60 — Bolts
34 — B1 Directing brakes
37 — B1 brake Piston
40 — B1 brake piston Cover
79 — the Basic flange
83 — Coupling of K1

85 — the Disk spring ring of a brake of LB3
87 — Planetary couple
88 — the Radial epiploon
88a — the Plastic directing B2 brake ring
90, 91, 197 — Sealing rings
95, 96 — Laying
97 — the Persistent bearing
100 — Coupling of K2
113 — Basic laying
115 — Teflon rings
133 — the Multidisk brake of B3
134 — the Damping spring
167 — the Output shaft
565 — the Sensor of protection of AT against an overload


 PERFORMANCE ORDER

1. Disassemble the transmission (see sections 1, 2 and 3).
2. Take the bearing of a brake B1 (31) to them cases, having turned off a bolt (33) or the valve of protection of AT against an overload (S65).
3. Attach a stripper (026) and tighten it on the transmission. Fix a stripper (026). Remove a lock ring (41).
4. Weaken a stripper (026). Remove the piston with a finger of a brake of B1 (37) together with a cover (40) and the return springs (35) and (36).
5. Take a guide of a brake tape of a brake of B1 (34). Replace a sealing ring in the transmission case.
6. Remove coupling of K1 (83) with a brake tape of a brake B1 (30). Remove a multidisk brake of B3 (shooter). Carefully remove the leading shaft (87).
7. Take a damping spring (134) from the transmission case.
8. Remove the piston of a brake B2 (15), having pressed a cover of a brake of B2 (17), having removed a lock ring (23).
9. Remove a plastic ring (88a) and a radial epiploon (88).
10. Remove coupling of K2 (100).
11. Shoot the brake film of a brake B2 (27).
12. Remove a basic ring (113) from a flange (79).
13. Remove a lock flange (79) from the transmission case, having turned off bolts (80).

Assembly

 PERFORMANCE ORDER

1. Install a flange (79) with a sealing ring (197) and teflon rings (115) in the transmission case. Before installation of a flange (79), be convinced that the greasing constrictor is established in a flange (79), - for installation of a flange (79) use two bolts about 80 mm long.
2. Establish basic laying (113) on a flange (79).
3. Insert the bearing of a brake B2 (29) with a finger (20) into the transmission case. Bigger diameter of a finger (28) has to be directed to a brake tape of a brake B2 (27).
4. Insert the plastic directing ring (88a) and a radial epiploon (88) into the transmission case. At installation, the sealing edge has to be directed to a cover of the piston (17) of a brake tape.

5. Check a persistent part of a brake of B2 (29) for a curvature. A persistent part, an opening and an ear (shooters), at removal, have to settle down water and same situation.
6. Install a new sealing ring in the transmission case. Insert a persistent part of a brake of B2 (29) an ear up.
7. Squeeze a brake tape of a brake B2 (27) as far as it is possible and insert it into the case, - the brake tape can be established by means of a lock ring for the B2 (23) piston.
8. Grease grooves on an output shaft (167) and insert teflon rings (167a).
9. Establish coupling of K2 (100) on planetary couple by means of the device (030).
10. Insert planetary couple into the transmission case, turning the leading shaft (87).
11. Install the transmission by an expert shaft (87) vertically up.
12. Check installation of planetary couple. Planetary couple is established correctly when the upper edge of a connecting support (shooter) is lower, than a basic surface (138) of an external multidisk brake of LB3. Establish a spring (134). The ledge (arrow A) on a spring has to be established inside. The damping spring has to be installed in a groove (arrow B) in the transmission case.
13. Install the piston of a brake B2 (15), having pressed a cover of the piston of a brake of B2 (17) and having inserted a lock ring (23).
14. Establish and check a gap in a multidisk brake of LB3.
15. Establish coupling of K1 (83) on planetary couple (87).
16. Establish the brake film B1 (30).
17. Check a gap of a brake tape of a brake of B1 (see the Section Measurement of a Gap in B1 brake) - the nominal rate makes 1.8-2.4 mm.
18. Check a gap in a brake tape of a brake B2, - the nominal rate makes 5.5-6.0 mm.
19. Check a gap in a multidisk brake of B3 (see the Section Installation and check of a gap in a multidisk brake of B3) - nominal rate makes 1.5 - 2.0 mm.
20. Further assembly is carried out as it should be, the return to removal.











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