Wheel Bearing Housing (Aluminum), Removing and Installing

Wheel bearing housing (aluminum), removing and installing
Removing
^ Remove hubcap, for light-alloy wheels pull off center cap (use pulling hook in vehicle tools).
^ Unscrew hex bolt for drive axle
^ Remove wheel.
^ Thread in all five wheel bolts again.





^ Remove bolt -1- for ABS- wheel speed sensor.
^ Unscrew hex bolt -2-.
^ Pull cable of ABS wheel speed sensor out of bracket on wheel bearing housing.





^ Unscrew bolts -1- from brake caliper and remove brake caliper.
^ Tighten hex bolt -2-
^ Secure brake caliper to body using wire.

Note: Do not allow brake caliper to hang on brake hose.

^ Remove brake disc.





^ Remove nuts -2- and -3-.





^ Remove rubber grommet -1- and disconnect harness connector -2-.
^ Remove cable for ABS wheel speed sensor from brackets -arrows-.
Do not damage rubber grommet!





^ Unscrew hex bolt -3- and nut -4-.
^ Pull out be rod end.
^ Unscrew nut from joint bolt.

Note:
^ For safety reasons, put collar nut back on joint bolt of guide link with about 4 turns, so that it is flush.
^ Be sure that both lever arms are parallel to each other during greatest applied pressure, adjust if necessary.

Use 4 mm socket wrench to hold joint bolt, if necessary.





^ Press joint bolts of guide link off conical seating.
Be careful not to damage CV boot in the process!

Note: For vehicles with headlight vertical aim control refer to Vehicle Level Sensor.
^ For safety reasons, put collar nut back on joint bolt of track control link with about 4 turns, so that it is flush.
^ Be sure that both lever arms are parallel to each other during greatest applied pressure, adjust if necessary.





^ Press joint bolts of track control link off conical seating.





^ Remove nut -1- and hex bolt, and lift out both control arms -2-.
Slits in wheel bearing housing may not be widened with a chisel or similar tool!
^ Swing away wheel bearing housing toward side, in direction of (arrow), while pulling drive axle end out of wheel hub.
^ Unscrew nut from joint bolt of track control link.
^ Remove wheel bearing housing.

Installing
^ Insert wheel bearing housing.
^ Push outer joint of drive axle into wheel hub and hand-tighten new hex bolt.

Note: Remove any glue remaining on thread of joint bolt.

^ Insert joint bolt of track control link and guide link into wheel bearing housing.
^ Thread new self-locking nuts and tighten to 125 Nm.
Use 4 mm socket wrench to hold joint bolt if necessary.
^ Insert both joint bolts of top control arm into wheel bearing housing.





^ Tighten new self-locking nuts -1- to 40 Nm.
^ Press upper links down as far as possible when tightening!
^ Insert tie rod.
^ Install new self-locking nuts -4- and tighten to 50 Nm.
^ Tighten hex bolts -3- to a maximum of 5 Nm.
^ Install ABS wheel speed sensor
^ Mount linkage for headlight vertical aim control
^ Screw on backing plate, and tighten to 10 Nm.
^ Mount brake disc, screw on brake caliper, and tighten to 190 Nm (M 14 x 1.5 x 38).
^ Mount wheel and tighten to 120 Nm.
^ Tighten hex bolt for drive axle
Suspension adjustment at front axle must be checked on an alignment stand recommended by VW/Audi, and corrected, if necessary.