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
- Power shafts
   + Driveshaft
   + Power shafts
   - Differential
      Differential
      Dismantling and assembly 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 differential with automatic blocking
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment

Dismantling and assembly of a reducer of the main transfer and adjustment of gaps of gear wheels

Dismantling and assembly of a reducer of the main transfer


11 and, 43e, 46b. — External rings of the bearing 11b, 43d, 46a. — Internal bearing ring 13 — the differential Case 13a — Bolts 29, 30 — Lock rings 32a — the Radial epiploon 33 — the Flange of a power shaft 40 — the Nut 41 — the Flange	42 — the Radial epiploon 44 — the Plug 45, 48 — Laying 47 — the Leading gear wheel 47a — the Conducted gear wheel 50 — the reducer Case 54 — the Back cover 55 — Sapun

Dismantling

PERFORMANCE ORDER

1. Remove the case a reducer 50. Merge oil from a reducer.
2. Fix a reducer in a vice.
3. Disconnect a back cover 54.

4. Remove a lock ring 30 from both flanges of power shafts 33.

5. Remove flanges of power shafts 33.

6. Vypressuyte left and right radial epiploons 32a.

7. Remove lock rings 29.
8. Insert a pin 046 for a shesterendifferentsial on the right side and press differential so that it on the left side concerned the reducer case. Take both external rings 11a roller bearings from the reducer case.

9. Take differential 13 of a reducer.

10. Take both internal rings 11b conic roller bearings from differential 13.

11. Weaken and turn off bolts 13a fastenings of the conducted gear wheel of the main transfer.
12. Remove the conducted gear wheel of the main transfer 47a from differential 13.
13. Weaken and turn off a nut of the 40th fastening of a flange 41.
14. Remove a flange 41.
15. Take the leading gear wheel of the main transfer 47 of a reducer.
16. Vypressuyte an epiploon 42 of a reducer.
17. Remove an internal ring of the bearing 43d.
18. Remove external rings of bearings 46b 43e from a reducer.
19. Remove laying 45.
20. Remove the plug 44 with laying 48 from the leading gear wheel.

Check

PERFORMANCE ORDER

1. Check all details for lack of wear and, if necessary, replace them.
2. Check the leading gear wheel 47 and the conducted gear wheel 47a for compliance of numbering.

Assembly and adjustment

PERFORMANCE ORDER

1. Press an internal ring of the bearing 46a on the leading gear wheel 47.
2. Count thickness of laying 45 and install it in the reducer case.
3. Install external rings of bearings 46b, 43e in the reducer case.
4. Install the plug 44 with laying 48 on both sides on the leading gear wheel.
5. Establish the leading gear wheel 47 in a reducer 50.
6. Establish an internal ring of the bearing 43d on the leading gear wheel and press them together with a radial epiploon 42.
7. Establish a flange 41 on the leading gear wheel.
8. Tighten a nut 40.
9. Adjust the friction moment in the bearing of the leading gear wheel.
10. Check a gap of the leading gear wheel.
11. Establish the conducted gear wheel 47a on differential 13. For this purpose it is necessary to heat the conducted gear wheel to temperature of 75-85 °C.
12. Press an internal ring of the bearing 11b on differential.
13. Further assembly is carried out as it should be, the return to dismantling.
14. Check and adjust an axial gap of a flange.
15. Fix a back cover 54.
16. Remove a reducer from a vice.

Installation

PERFORMANCE ORDER

1. Establish a reducer 50.
2. Fill in oil. Oil volume: 1.2 l.
3. Replace сапун 55 on a back cover 54.

Specifications:

The friction moment in the bearing of the leading gear wheel (new conic roller bearings): 215-245 N · m.

Tolerance from adjusting parameter on the end of the leading gear wheel:-0.02/mm.

Gap between the leader and the main transfer conducted by gear wheels: 0.08 - 0.014 mm.

Axial gap between a flange and the case of differential: 0.03 - 0.3 mm.