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
- Coupling
   + Coupling
   Driveshaft
   + Power shafts
   - Differential
      Dismantling, assembly and check of differential
      Dismantling and assembly of a reducer of the main transfer and adjustment of gaps of gear wheels
      Determination of thickness of adjusting laying and its installation in the reducer case
      Check and adjustment of a gap of a flange
      Dismantling and assembly of a reducer of the main transfer and adjustment of gaps of gear wheels (model 140.28/032/O33 till 31.05.94 of the issue, 140.042/043/063/1 and with a diameter of 210 differential of mm)
      Dismantling and assembly of differential with automatic blocking
      Replacement of the cylinder of differential with automatic blocking (model 140.028/032/033 till 31.05.94 of the issue and 140.1 with a code 211a)
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Dismantling and assembly of a reducer of the main transfer and adjustment of gaps of gear wheels (model 140.28/032/O33 till 31.05.94 of the issue, 140.042/043/063/1 and with a diameter of 210 differential of mm)

Design of a reducer of the main transfer (model 140 28/032/033 till 31.05.94 of the issue, 140.042/043/063/1 and with a diameter of 210 differential of mm)

A — the Standard version
In — the Version with ASR
With — the Version with ASD
11a, 43e, 46b — External rings of the conic roller bearing
11b, 43d, 46a — Internal rings of the conic roller bearing
13 — Differential
13a, 27a, 56, 56b — Bolts
25, 42 — Sealing rings
26, 45, 48 — Laying
27b, 27c, 27d — Covers of bearings
30 — the Lock ring
31 b — Rings
33, 33a, 33b — Flanges of a power shaft

40 — the Nut
41, 41a — Flanges of the leading gear wheel of a reducer
43a — the Clamping plate
44 — the Plug
47 — the Leading gear wheel
47a — the Conducted gear wheel
49 — ABS Rotor
50 — the Reducer
54 — the Back cover of a reducer
55 — Sapun
32, 32a, 70j — Epiploons
70l — the Hydraulic tube

Dismantling

PERFORMANCE ORDER

1. Remove a reducer (50). Fix it in a vice.
2. Remove a back cover (54).
3. Remove a lock ring (30) from both flanges of power shafts (33)/(33a)/(33b).
4. Remove flanges of power shafts.
5. On models with ASD/ASR remove ball bearings from flanges.
6. On models without ASD remove rings (31b).
7. On models with ASD pick up the hydraulic phone (70l).
8. Uncover bearings (27b)/(27)) / (27d), mark them together with laying (260).
9. Remove differential (13) from a reducer.
10. Take the left and right epiploons (32) / (32a), (70j) from covers of bearings.
11. Vypressuyte both external rings (11a) bearings from covers of bearings.
12. Vypressuyte both internal rings (11b) bearings from covers of bearings.
13. Weaken and turn off bolts (13a) of fastening of the conducted gear wheel (47a).
14. Carefully remove the conducted gear wheel from differential (13).
15. Weaken and turn off a nut (40) of fastening of a flange (41)/(41a).
16. Remove a flange (41)/(41a).
17. Vypressuyte the leading gear wheel (47) from a reducer.
18. Vypressuyte a radial sealing ring (42) from a reducer.
19. Remove an internal ring of the conic roller bearing (43d) with a clamping plate (43a).
20. Remove an external ring of the conic roller bearing (46b), (43e) and laying (45) from a reducer.
21. Remove the plug (44) with laying (48) from the leading gear wheel.
22. Remove a rotor of ABS (49) from the leading gear wheel (47).

Check

PERFORMANCE ORDER

1. Check all details of a reducer for lack of wear and, if necessary, replace them.
2. Check leading (47) and conducted (47a) gear wheels on correctness of digital numbering.

Assembly and adjustment

PERFORMANCE ORDER

1. Press an internal ring of the bearing (46a) on the leading gear wheel (47).
2. Press a rotor of ABS (49) on the leading gear wheel (47).
3. Count thickness of laying (45) and establish it in a reducer.
4. Establish external rings (46b), (43e) in a reducer.
5. Install the plug (44) with laying (48) on both sides of the leading gear wheel.
6. Insert the leading gear wheel (47) into a reducer (50).
7. Fix a clamping plate (43a) on an internal ring of the conic roller bearing (43d).
8. Insert an internal ring of the conic roller bearing (43d) on the leading gear wheel and press it together with a sealing ring (42).
9. Establish a flange (41) / (41a) on the leading gear wheel and wrap a nut (40).
10. Adjust the friction moment in the bearing of the leading gear wheel.
11. Check adjusting distance of the leading gear wheel.
12. Tighten a nut (40).
13. Fix the conducted gear wheel (47a) on differential (13).
14. Press an internal ring of the conic roller bearing (11b) on differential.
15. Press an external ring of the conic roller bearing (11a) on differential.
16. Press epiploons (32) / (32a), (70j) in a reducer (50) and insert differential (13).
17. Establish a lock ring (30) on a flange.
18. Check and adjust a flange gap.
19. Attach a cover (54).
20. Replace сапун (55) on the case of a reducer (50).
21. Further assembly and installation are carried out as it should be the return to dismantling and removal.

Specifications:

PERFORMANCE ORDER

1. A tolerance from adjusting distance on the end of the leading gear wheel of-0.02/+0.01 mm.
2. A gap between a flange and the case of a reducer of 0.03 - 0.3 mm.
3. The volume of the filled-in oil of 1.3 l.
4. The friction moment in the bearing of the leading gear wheel of 125-150 Nanometers.