Installing Drive Shaft

WARNING: This page is about a different variant/trim than selected.

WARNING: Incorrect handling of safety bolts

Danger of injury
Loss of torque
→ Always use new screws or nuts following removal.

→ Comply with instructions for repairs.

→ Observe specified tightening torques.

→ Carry out a visual inspection of parts used.

On used and new drive shafts, clean the bores -2- on the inner halfshaft flange -1- with a cloth soaked in brake cleaner.

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Inner halfshaft flange bores
Grease the drive shaft splines with Optimoly HT. Do not grease the threads.
Information

Do not kink or pull electric lines and brake hose too tightly.

The drive shaft must be secured against falling.
Position drive shaft -2- on the transmission flange, swivel wheel bearing housing -1- carefully to the rear and guide the drive shaft into the wheel hub.
The help of another person is required.

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Swivelling wheel bearing housing to the rear
Clip electric line -1- into holders -Arrows- .

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Clip in electric line
Secure upper control arm to the wheel bearing housing with new screws and nuts, do not tighten the threaded joints.

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Trailing arm on wheel bearing housing at the top
1. 5.1 Fit new screw -3- securing rear-axle steering adjuster to wheel bearing housing.
2. 5.2 Fit new screw and collar nut -2- securing upper longitudinal arm to wheel bearing housing.
3. 5.3 Fit new screw -1- securing upper control arm to wheel bearing housing.
Secure lower control arm to wheel bearing housing with new screws and nuts, do not tighten the threaded joints.

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Trailing arm to wheel bearing housing at the bottom
1. 6.1 Fit new screw and nut -4- securing spring strut to wheel bearing housing.
2. 6.2 Fit new screw and collar nut -3- securing lower longitudinal arm to wheel bearing housing.
3. 6.3 Fit new screw and collar nut -2- securing lower trailing arm to wheel bearing housing.
4. 6.4 Fit new collar nut -1- securing connecting link to anti-roll bar.
WARNING:
Wheel bearing housing raised incorrectly
- Risk of crushing
- Risk of damage to components
  → Wear personal protective gear.
  
  → Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
Lift the wheel bearing housing using > VAS 6931 - transmission and engine jack-Arrow- , until the lower trailing arm is positioned horizontally (zero position). > Trailing arm zero position (shown as an example)

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Trailing arm zero position (shown as an example)
Tighten threaded connections on the wheel bearing housing at the bottom.

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Trailing arm to wheel bearing housing at the bottom
1. 8.1 Spring strut -4- to wheel bearing housing.
  > Tightening torque 110 Nm (81.1 ftlb.)
2. 8.2 Screw securing lower longitudinal arm -3- to wheel bearing housing.
  > Initial tightening 70 Nm (51.6 ftlb.) > Final tightening + 180°
3. 8.3 Screw securing lower trailing arm -2- to wheel bearing housing.
  > Initial tightening 70 Nm (51.6 ftlb.) > Final tightening + 180°
4. 8.4 Counter collar nut securing connecting link -1- to anti-roll bar at the internal Torx screw on the connecting link.
  > Initial tightening 50 Nm (36.9 ftlb.) > Final tightening angle + 50 (37 ftlb.) °
Tighten threaded connections on the wheel bearing housing at the top.

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Trailing arm on wheel bearing housing at the top
1. 9.1 Screw -1- securing rear upper trailing arm to wheel bearing housing
  > Initial tightening 60 Nm (44.3 ftlb.) > Final tightening torque angle + 90°
2. 9.2 Screw and collar nut -2- securing upper trailing arm centre to wheel bearing housing
  > Initial tightening 70 Nm (51.6 ftlb.) > Final tightening + 180°
3. 9.3 Screw -3- securing rear-axle steering adjuster to wheel bearing housing.
  > Initial tightening 60 Nm (44.3 ftlb.) > Final tightening torque angle + 90°
> VAS 6931 - Transmission and gearbox jack can now be lowered and moved aside.
Tighten new bolts -2- with new drive shaft shims -1- to gearbox flange.
Another person is needed in order to actuate the service brake.

> Initial tightening 40 Nm (29.5 ftlb.) > Final tightening torque angle + 110°

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Mounting for drive shaft on transmission flange

Tightening method for securing drive shaft to wheel hub after re-using the drive shaft:
Tighten new hex nut -1- with > VAS 6942 - torque- angle- spanner 20-400 Nm (15-296 ftlb.) and > 9471 - socket spanner.
Another person is needed in order to actuate the service brake.

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Fastening nut drive shaft to wheel hub
1. 12.1 Initial tightening of new fastening nut: > Final tightening rotation angle 460 Nm (339.3 ftlb.)
  Tightening method for securing drive shaft to wheel hub after replacing the drive shaft:
Tighten new hex nuts -1- in steps with > VAS 6942 - torque- angle- spanner 20-400 Nm (15-296 ftlb.) and > 9471 - socket spanner.
Another person is needed in order to actuate the service brake.

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Fastening nut drive shaft to wheel hub
1. 13.1 Tighten new lock nut for stage 1 and 2: > 1. Step 260 Nm (191.8 ftlb.) > 2. Step + 120°
2. 13.2 Step 3, loosen nut: > 3. Step - 360°
3. 13.3 Step 4 and 5: > 4. Step 120 Nm (88.5 ftlb.) > 5. Step + 120°
Remove protective tube from drive shaft.

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Removing protective tube from drive shaft (example)