BMW 7_aya the E38 series from 1994 to 2002
1. Introduction
2. Governing bodies and methods of operation
3. Settings and routine maintenance of the car
4. Engine
5. Cooling systems of the engine, heating, ventilation and air conditioning
6. A power supply system and production of the fulfilled gases
7. Systems of electric equipment of the engine
8. Manual box of gear shifting and coupling
9. Automatic transmission
10. Cardan and power shafts, reducer, differential and stupichny assemblies
10.1. General information
10.2. Removal and installation of the driveshaft and elastic coupling
10.3. Replacement of the CV JOINT of the driveshaft
10.4. Replacement of an intermediate support of the driveshaft
10.5. Removal and installation of a reducer of the back bridge
10.6. Removal and installation of power shafts
10.7. Replacement of boots of power shafts
11. Brake system
12. Suspension bracket and steering
13. Body
14. Onboard electric equipment
15. Schemes of electric equipment



10-kardannyjj-i-privodnye-valy-reduktor-differencial-i-stupichnye-sborki.html

10. Cardan and power shafts, reducer, differential and stupichny assemblies

Specifications

Driveshaft

Lubricant of the sliding coupling of the driveshaft Molycote Longtherm 2
Type/weight (g) of lubricant of the CV JOINT of the driveshaft Optimol//80
Bending moment of cardan hinges with a crosspiece, N*sm 20 ÷ 70
Pretightness of an intermediate support on the course of the car, mm 2 ÷ 4
Driveshaft bend angles ("+": the shaft is unbent up, "-": the shaft is unbent down)

Models 725tds with AT, 728i with AT

  • AT - a shaft
- 0 °30 '÷ +0 °30'
  • Intermediate support
- 1 °04 '÷ -0 °04'
  • Shaft – a reducer of the main transfer
+1 °04 '÷ +2 °04'

Models 725tds with RKPP

  • RKPP - a shaft
- 0 °30 '÷ +0 °30'
  • Intermediate support
- 1 °07 '÷ -0 °07'
  • Shaft – a reducer of the main transfer
+1 °06 '÷ +2 °06'

Models 728i with RKPP

  • RKPP - a shaft
- 0 °27 '÷ +0 °33'
  • Intermediate support
- 1 °09 '÷ -0 °09'
  • Shaft – a reducer of the main transfer
+1 °06 '÷ +2 °06'

Models 728iL with AT

  • AT - a shaft
- 0 °30 '÷ +0 °30'
  • Intermediate support
- 0 °30 '÷ +0 °30'
  • Shaft – a reducer of the main transfer
+0 °30 '÷ +1 °30'

Models 750i with AT, 740i (M60/2 engine), 735i (M62 engine) with RKPP

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 1 °14 '÷ -0 °14'
  • Shaft – a reducer of the main transfer
+1 °13 '÷ +2 °13'

Models 750iL with AT, 740iL (M62 engine) with AT

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 0 °45 '÷ +0 °15'
  • Shaft – a reducer of the main transfer
+0 °43 '÷ +1 °43'

Models 730i (M60/1 engine) with AT

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 1 °08 '÷ -0 °08'
  • Shaft – a reducer of the main transfer
+1 °07 '÷ +2 °07'

Models 730iL (M60/1 engine) with AT

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 0 °41 '÷ +0 °19'
  • Shaft – a reducer of the main transfer
+0 °40 '÷ +1 °40'

Models 730i (M60/1 engine) with RKPP

  • AT - a shaft
- 0 °26 '÷ +0 °43'
  • Intermediate support
- 1 °13 '÷ -0 °13'
  • Shaft – a reducer of the main transfer
+1 °09 '÷ +2 °09'

Models 730iL (M60/1 engine) with RKPP

AT - a shaft

- 0 °29 '÷ +0 °31'

Intermediate support

- 0 °42 '÷ +0 °18'

Shaft – a reducer of the main transfer

+0 °41 '÷ +1 °41'

Models 740iL (M60/2 engine) with AT

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 0 °44 '÷ +0 °16'
  • Shaft – a reducer of the main transfer
+0 °43 '÷ +1 °43'

Models 735i (M62 engine) with AT

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 1 °06 '÷ -0 °06'
  • Shaft – a reducer of the main transfer
+1 °06 '÷ +2 °06'

Models 735iL (M62 engine) with AT

  • AT - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 0 °30 '÷ +0 °30'
  • Shaft – a reducer of the main transfer
+0 °29 '÷ +1 °29'

Models 740i (M62 engine)

  • AT (RKPP) - a shaft
- 0 °29 '÷ +0 °31'
  • Intermediate support
- 1 °10 '÷ -0 °10'
  • Shaft – a reducer of the main transfer
+1 °10 '÷ +2 °10'

Reducer of the back bridge

Reducer type
Models with M52, M51 and M62 B35 engines 188K
Models with M62 B40, M57, M67 and M73 engines 220K
Main transfer
  • Models 725tds
2.93/2.79 (((from 05.1996 g of the issue)
  • Models 725tds A
3.38
  • Models 728i, 728i A, 730i, 730i A
3.23
  • Models 735i, 735i A, 740i, 740i A
3.15
  • Models 740i (M62 engine), 740i A (M62 engine)
2.93
  • Models 750i A
2.81
The moment of friction forces of the bearing of the leading gear wheel depending on type of the main transfer and type of the bearing, Nanometer
  • Brand K FAG
1.60 ÷ 3.36
  • Brand K SKF
1.40 ÷ 2.60
  • Brand K Timken
1.45 ÷ 2.65
  • Brand K Koyo
1.27 ÷ 2.65
  • FAG brand M
1.58 ÷ 3.26
  • SKF brand M
1.30 ÷ 2.50
  • M Timken brand
1.25 ÷ 3.40
  • M Koyo brand
1.23 ÷ 2.73
  • Brand G FAG
2.20 ÷ 5.19
  • Brand G SKF
2.00 ÷ 4.30
  • Brand G Timken
2.30 ÷ 5.16
  • Brand G Koyo
2.38 ÷ 4.76
Radial beating of a flange of the leading gear wheel, mm no more than 0.07
The moment of friction forces of both bearings of a box of differentials depending on type of a reducer of the back bridge and brand of the bearing, Nanometer
  • Brand K FAG
1.18 ÷ 2.62
  • Brand K SKF
1.20 ÷ 2.40
  • Brand K Timken
1.28 ÷ 2.60
  • Brand K Koyo
1.20 ÷ 2.62
  • FAG brand M
1.10 ÷ 2.44
  • SKF brand M
1.00 ÷ 2.00
  • M Timken brand
0.70 ÷ 2.56
  • M Koyo brand
1.4 ÷ 2.60
  • Brand G Timken
1.80 ÷ 3.80
  • Brand G Koyo
1.40 ÷ 3.40
Gap between a dish-shaped spring / a compensation washer and a gear wheel of a half shaft, mm 0 ÷ 0.07

Power shafts

Amount of lubricant for internal//the external CV JOINT, 80/120

Efforts of tightening of threaded connections, Nanometer

The elastic coupling to the driveshaft and a flange of an output shaft of transmission
  • M10 8.8
48
  • M10 10.9
64
  • M14
140
  • M12 8.8
81
  • M12 10.9
100
The cardan hinge with a crosspiece to the transmission 60
Tightening ring of the sliding coupling of the driveshaft after installation on the car 10
Reducer of the back bridge to a beam (in front//behind) 150/102
Case cover
  • 188K (M10 8.8//M10 10.9)
45/55
  • 220K (M10x25//M10x75//M10x67)
90/110///130
Side cover of the bearing of a reducer 10 then to hold on on a corner 45 °
Traffic jams of drain and jellied openings of a reducer 65
Power shaft to a reducer of the back bridge and an output flange
  • M10 bolt (cylindrical and Torx//with ratchet teeth)
83/96
  • M12 bolt (with ratchet//direct teeth)
110/135
  • Black bolt with direct teeth (M8//M10)
64/100
  • Silvery bolt with direct teeth (M8//M10)
52/80
Flange to a power shaft of a wheel (M27//M24//M22) 300/250///200
The longitudinal lever of a suspension bracket to a beam of the back bridge 72
The directing lever to a beam of the back bridge 60
The top cross lever of a back suspension bracket to a support of the wheel bearing 160
The top cross lever of a suspension bracket to a beam of the back bridge 110
The additional lever to the longitudinal lever of a suspension bracket and a beam of the back bridge 127
The shaking lever to a beam of the back bridge (in front//behind) 60/130
The integrated lever to a wheel bearing support in front 105
The threaded connection of the shaking lever, the integrated lever and a support of the wheel bearing 236
The shock-absorber to the longitudinal lever to a suspension bracket/support of the wheel bearing / to the shaking lever / to the cross lever of a back suspension bracket (to tighten at normal loading) 127
Rod of the cylinder of a depreciation rack to the top support of a depreciation rack (M10//M14) 24/27
The top support of a depreciation rack to a body/beam of the back bridge 24


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10.1. General information