SEAT Workshop Service and Repair Manuals

Removing and installing wheel bearing housing

Special tools and workshop equipment required

t	Ball joint puller -3287A-

t	Spreader -3424-

t	Ball joint puller -T10187-

t	Torque wrench -V.A.G 1332-

t	Engine/gearbox jack -V.A.G 1383 A-

t	Angle wrench -V.A.G 1756-

Carry out the following work: Removal: –  Loosen drive shaft bolt at wheel hub: t  Twelve-point head bolt with ribbing → Chapter t  Twelve-point head bolt without ribbing → Chapter   Caution Wheel bearings must not be subjected to load after loosening bolt securing drive shaft at wheel hub. If they have to support the weight of the vehicle they will be damages and their service life will be reduced. It is not permissible to turn drive shaft bolt more than 90° anti-clockwise if vehicle is standing on its wheels. Do not attempt to move the vehicle without the drive shafts fitted; this would result in wheel bearing damage. If a vehicle nevertheless has to be moved, comply with the following: t  Install an outer joint instead of the drive shaft. t  Tighten outer joint to 120 Nm. –  Loosen wheel bolts. –  Raise the vehicle. –  Remove wheel. –  Remove brake caliper with brake carrier and suspend from body using wire → Brake systems; Rep. gr.46 –  Remove ABS speed sensor → Brake systems; Rep. gr.46 –  Remove brake disc. –  Remove the cover plate from the stub axle.

–  Loosen nut on track rod ball joint but do not remove completely.   Caution Leave nut screwed several turns onto track rod ball joint shank to protect thread. –  Push track rod off wheel bearing housing and remove nut. 1 -  Ball joint puller -T10187-

–  Slacken off nuts -arrows-. –  Pull swivel joint out of suspension link. –  Pull outer joint of drive shaft out of wheel hub. –  Secure drive shaft to body with wire.

–  Remove the threaded steering knuckle/suspension strut union -arrow-.

–  Fit Separator device -3424- in the steering knuckle groove. –  Turn ratchet handle through 90° and pull off from spreader -3424-. –  Position engine and gearbox jack -V.A.G 1383 A- under wheel bearing housing. –  Pull wheel bearing housing from suspension strut.   Note If wheel bearing housing is renewed, swivel joint must be transferred. Always use new nuts. Installation Installation is carried out in the reverse sequence; note the following: –  Tighten drive shaft bolt at wheel hub: t  Twelve-point head bolt with ribbing → Chapter t  Twelve-point head bolt without ribbing → Chapter   Caution During this step, vehicle must not be standing on its wheels. The wheel bearing can be damaged by the weight of the vehicle if the bolt is loosened.

Distinguishing features between twelve-point head bolt with ribbing and twelve-point head bolt without ribbing. The twelve-point head bolts can be distinguished by the contact surfaces -arrow A- and -arrow B-. I -  Twelve-point head bolt with ribbing -arrow A- II -  Twelve-point head bolt without ribbing -arrow B- If wheel bearing housing is renewed, wheels must be aligned → Chapter. –  Fit and secure wheel → Chapter.

Specified torques

Component	Tightening torque
Suspension strut to wheel bearing housing t  Use new nuts	70 Nm + 90°
Swivel joint to cast steel suspension link t  Use new nuts	60 Nm
Swivel joint to sheet steel or forged aluminium suspension link t  Use new nuts	100 Nm
Track rod ball joint to wheel bearing housing t  Use new nuts	Tighten to 100 Nm, then loosen (turn back) 180° and retighten to 100 Nm
Drive shaft to wheel hub „twelve-point head bolt with ribbing“ t  Use new bolt.	70 Nm + 90°
Drive shaft to wheel hub „twelve-point head bolt without ribbing“ t  Use new bolt.	200 Nm + 180°