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How to replace Halfshafts on Audi A4 & VW passat models?

The procedure is similar for both Audi A4 and VW car models.

Halfshafts
CV-JOINTS
REMOVAL & INSTALLATION details for Audi and Vw is as follows:---


CV-Joints



Overhaul
Inner CV-Joint
Double Offset Joint
  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove or disconnect the following:
    NOTE
    Do not disassemble the inner race, cage and ball assembly.



    Axle halfshaft
    Inner boot clamps and push the boot back
    Circlip
    CV-joint housing
    Snapring
    Double offset joint inner race, cage and ball assembly
    CV-joint boot
To install:
  1. Install or connect the following:

    CV-joint boot
    Double offset joint inner race, cage and ball assembly
    Snapring
  2. Apply clean grease to the CV-joint housing and the boot.
  3. Install or connect the following:

    CV-joint housing
    Circlip
    Boot clamps by tightening them
    Axle to the vehicle
Tri-Pod Joint
  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove or disconnect the following:
    NOTE
    Do not disassemble the spider and rollers.



    Axle halfshaft
    Inner boot clamps and push the boot back
    CV-joint housing
    Snapring
    Spider and rollers
    CV-joint boot
To install:
  1. Install or connect the following:

    CV-joint boot
    Spider and rollers
    Snapring
  2. Apply clean grease to the CV-joint housing and the boot.
  3. Install or connect the following:

    CV-joint housing and tighten the boot clamps
    Axle to the vehicle
Outer CV-Joint
The outer CV-joint is serviced with the axle halfshaft as an assembly. The outer CV-joint boot may be serviceable by first removing the inner joint.

Removal & Installation



Front
  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove or disconnect the following:

    Halfshaft nut
    Front wheels
    Hex bolt for outer joint of drive axle
    Anti-lock Brake System (ABS) speed sensor by sliding it partly out of its mount
    Halfshaft from the transaxle flange
  3. Press the halfshaft upward toward the front of the vehicle.
  4. Turn the steering to full lock.
  5. Remove the halfshaft.
To install:

NOTE
If equipped, replace the inner CV-joint gasket.



Halfshaft into the wheel hub
Halfshaft-to-transaxle flange. Torque the bolts to 33 ft. lbs. (45 Nm) for the M8 bolts and to 59 ft. lbs. (80 Nm) for the M10 bolts
ABS speed sensor
Halfshaft nut. Torque it to 148 ft. lbs. (200 Nm) plus an additional 1 / 4 (90 degree) turn
Hex bolt for outer joint of drive axle. Torque M14 bolts to 85 ft. lbs. (115 Nm) and M16 bolts to (190 Nm).
Front wheels

  1. Before servicing the vehicle, refer to the precautions section.
  2. Remove or disconnect the following: 

    Hub cap or center cap
    Hex collar bolt by loosening it
    Front wheels
    Halfshaft-to-transaxle flange bolts
    Hex collar bolt
    Anti-lock Brake System (ABS) wheel speed sensor cable from the brake caliper bracket
    ABS speed sensor by sliding it partly out of its mount 

    image 
    Fig. Loosen nut (1), remove the hex bolt and pull both arms (2) upward and out-A4 models



    Remove nut/bolt No. 1, as shown
  3. Pull both arms up and out of the swing arm
    WARNING
    The slots in the swing arm must not be widened. Do not loosen the bolts No. 3 and 4, otherwise the axle geometry must be checked.
  4. Tilt the swing arm out and to the rear of the vehicle
  5. Remove the halfshaft
To install:
  1. Install or connect the following:

    Halfshaft into the wheel hub
    Swing arm bolt. Torque it to 30 ft. lbs. (40 Nm)
    Halfshaft-to-transaxle flange. Torque the bolts to 30 ft. lbs. (40 Nm) for the M8 bolts and to 57 ft. lbs. (77 Nm) for the M10 bolts
    ABS wheel speed sensor
    Sensor cable into the caliper bracket
    Front wheels
  2. Tighten the axle bolt as follows:

    M14 bolt: 85 ft. lbs. (115 Nm) plus an additional 1 / 4 (90 degree) turn
    M16 bolt: 140 ft. lbs. (190 Nm) plus an additional 1 / 4 (90degree) turn




These details will help.
Thanks.

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html




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