General Repair Information: Components

Rear Final Drive 

• When replacing the rear final drive, check the gear oil level and the Haldex clutch oil level, fill as necessary.
• Tiguan, refer to CODE LETTERS AND TRANSMISSION ALLOCATION .
• Clean the contact surfaces when installing the brackets as well as any waxed components. Contact surfaces must be free of grease and wax.

Guided Fault Finding, On Board Diagnostic (OBD) and Test Instruments 

• Before servicing the Haldex clutch, the malfunction cause must be determined as closely as possible via the vehicle diagnostic tester, in operating modes "Guided Fault Finding", "Vehicle Self-Diagnosis" and "Test Instruments".

O-Rings, Seals and Gaskets 

• O-rings, gaskets and seals must be replaced.
• Always clean the separation surfaces.

Prior to installing: 

• Before installing radial shaft seals, lightly oil the outer circumference and fill the space between the sealing lips -arrow- halfway with sealing grease for sealG 052 128 A1.
  Fig 1: Identifying Oil Seal Sealing Lips

  Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
• Before installing the flange shaft/driveshaft radial shaft seals, lightly lubricate the outer circumference and the space between the sealing lips with High Performance Gear Oil for Haldex CouplingG 052 175 A1.
• The open side of the seal point toward the fluid to be sealed in.

After Installing: 

• Check the oil level in the rear final drive, add as necessary, refer to one of the following:
• Tiguan, CC and Golf R, refer to REAR FINAL DRIVE OIL LEVEL, CHECKING OR FILLING .
• Check the oil level in the Haldex clutch, add as necessary, refer to one of the following:
• Tiguan, CC and Golf R, refer to HALDEX CLUTCH OIL LEVEL, CHECKING OR FILLING .

Fasteners 

• Do not overstretch the circlips (lock rings).
• Always replace damaged or stretched circlips.
• The circlips must fit completely inside the groove.
• Replace the roll pins. Installed position: The slit -A- should be in line with the line of force -arrow-.
  Fig 2: Identifying Locking Elements

  Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Bolts and Nuts 

• Always loosen or tighten bolts and nuts for covers and housings diagonally.
• Parts which are particularly sensitive to distortion must be kept straight when removing and installing; loosen or tighten diagonally and in stages.
• The tightening specification apply to non-lubricated nuts and bolts.
• Always replace self-locking nuts and bolts.
• Only wax all the contact surfaces on the threaded connection bolts and nuts after installing.

Bearings 

• Install needle bearings with the lettered side (thicker metal) facing the installation tool.
• Insert all the bearings in the transmission using gear oil.
• Replace all the tapered roller bearings that are on the same shaft. Use tapered roller bearings from the same manufacturer.
• Heat the inner races to approximately 100 °C (212 °F) before installing
• Do not interchange inner and outer bearing races with those from other bearings of the same size. The bearings are paired.

Adjusting Shims 

• Measure the shims at several locations with a micrometer. Tolerance variations make it possible to find the exact shim thickness required.
• Check for burrs and damage.
• Only install perfect shims.