Installing Drive Shaft

→ Wear personal protective gear.

→ Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).

Information 

Before installing the shaft, replace the lock ring (circlip) on the shaft as well as the shaft sealing ring in the final drive.

Make sure not to damage the sealing ring when guiding the shaft into the final drive.

• The inner end of the drive shaft must be held with both hands at the joint and inserted into the rear axle differential with a quick jerk. The outer joint must be held by a second mechanic in order to prevent damage  .
• Check that the joint is seated correctly in the rear axle differential: Hold the joint with both hands and pull outwards  .
• Visually check that the plastic protective rings are flush on the rear axle differential  .

Information 

• All screws and threaded joints on the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on its wheels or the wheel suspension is raised with a universal vehicle lift. Measurement -1- from the lower edge of the wing to the middle of the vehicle axle corresponds to vehicle position. The current height values can be found in →  4495TW ADJUSTMENT VALUES FOR SUSPENSION ALIGNMENT  . Always observe the following points!
  Fig 1: Checking Dimension 1 - Centre Of Wheel To Lower Edge Of Wing (Rear Axle)

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• On vehicles with air springs, the respective air spring must be bled using the Porsche System Tester  . → 4301IN BLEEDING AND FILLING THE LEVELLING SYSTEM
• Screws and nuts are Geomet-coated and must not be greased  .

Information 

• The pictures shown in this document may differ from the original  .

1. Grease the splines with a little Optimoly TA aluminum paste and fit the drive shaft -1-  into the wheel bearing housing -2-  (-A-  ). When doing this, press the inner joint together fully.
   Fig 2: Inserting Drive Shaft Into Wheel Bearing Housing

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   Information 

   • The drive shaft must be pulled in as far as it will go using the fitting tool T10206  .
     Fig 3: Identifying Fitting Tool T10206

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2. Pull the drive shaft into the wheel bearing housing.
3. Grease mounting-face ring of axle nut with a little Optimoly TA aluminum paste. Fit the axle nut.
4. After you have pulled the drive shaft into the wheel bearing housing, it still needs to be pre-tightened to the specified tightening torque.
   Fig 4: Pulling In Drive Shaft

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   1. 4.1. Tighten the drive shaft, in the 1st step "before installation" to Tightening torque 130 Nm (96 ftlb.)  . To do this, place the wheel bearing housing with the drive shaft and tool on the floor (do not damage the brake cover plate) and pull in the drive shaft. A second mechanic is required! -arrow- 
   2. 4.2. The second tightening step is performed when the wheel bearing housing is installed in the section on "Subsequent work".
5. Left side: Replace the plastic protective ring on the transmission side, which you broke off during removal.
6. Use a new sealing ring in the rear axle differential and a new protective ring and circlip on the drive shaft.
7. Fit the wheel bearing housing (second mechanic required). First, fit the drive shaft on the rear axle differential housing with a quick, strong tap.

   To make installation easier, raise the wheel carrier slightly with a universal jack! Use a rubber base to prevent the wheel carrier from slipping! → Lifting wheel bearing housing (example) 

   Fig 5: Lifting Wheel Bearing Housing

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8. Fit screws -1, 2-  on the inside of the two upper wishbones.

   Upper trailing arm (front) to wheel bearing housing: Tightening torque 150 Nm (111 ftlb.) +90 angular degrees 

   Upper trailing arm (rear) to wheel bearing housing: Tightening torque 150 Nm (111 ftlb.) +90 angular degrees 

   Fig 6: Identifying Threaded Joint On Inner Wishbones

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9. Fit lower trailing arm -2-  on the wheel bearing housing -1-  . → 421119 REMOVING AND INSTALLING LOWER TRAILING ARM  .
   Fig 7: Identifying Screws On Lower Trailing Arm

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10. Fit the tie rod (toe control arm) on the wheel bearing housing. → 420919 REMOVING AND INSTALLING TIE ROD (TOE CONTROL ARM)  , → 4X00IN TIGHTENING TORQUES FOR REAR AXLE
11. Fit spring strut on wheel bearing housing. → Installing Rear Spring Strut (Steel Springs)  , → 4X00IN TIGHTENING TORQUES FOR REAR AXLE
12. Fit the brake disc if necessary. → Installing Rear Brake Disc

    Fit brake calliper. → Installing Rear Brake Calliper

13. Plug in the central connector -1-  for the ABS wire harness -A-  and lock it -a-  .
    Fig 8: Locating Central Connector For Wheel Bearing Housing - ABS Wire Harness

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14. Clip the mounting -2-  for the ABS wire harness into the position designed for it -3-  on the body -B-  .