SEAT Workshop Service and Repair Manuals

Removing and installing wheel bearing housing Special tools and workshop equipment required

t  Torque wrench -V.A.G 1332- Removal: –  Remove coil springs → Chapter. –  Loosen drive shaft bolt at wheel hub: t  Hex bolt → Chapter t  Twelve-point head bolt with ribbing → Chapter t  Twelve-point head bolt without ribbing → Chapter –  Remove wheel. –  Detach brake carrier with brake caliper and attach to body using wire → Rep. gr.46. –  Install ABS speed sensor in wheel bearing housing.

–  Remove bolt -arrow-.

–  Unscrew bolts -arrows- and remove splash plate -1-.

–  Remove bolt for track rod -1-, upper transverse link -2- and lower transverse link -3- from wheel housing -4-. –  Unbolt coupling rod from wheel bearing housing -arrow-.

–  Remove coupling rod -1- from trailing arm. –  Hold wheel bearing housing and unscrew bolts -arrows-. –  Remove the steering knuckle. Installation Installation is carried out in the reverse sequence; note the following:   Note Ensure that a plate/washer is installed between the track rod, upper control arm, shock absorber and wheel bearing housing respectively.

Position: bolted joint longitudinal arm/steering knuckle Do not tighten bolts securing trailing arm to wheel bearing housing until all other suspension components (especially spring and shock absorber) on that side are fitted. The wheel suspension must be in extended position before securing. The trailing arm and the wheel bearing housing will only then move into the required position -arrows-. –  Install coil spring → Chapter. It is essential to follow specified sequence of work steps below!

–  Fit trailing arm to wheel bearing housing with bolts -arrows- (do not tighten at this stage). –  Insert coupling rod -1- in trailing arm (do not tighten nut at this stage). –  Lower wheel suspension with engine and gearbox jack -V.A.G 1383 A- and remove support -T10149- from wheel hub. –  Tighten bolts -2- for trailing arm to specified torque, observing the required component position → Fig.. –  Bolt coupling rod -1- to wheel bearing housing and anti-roll bar. The threaded connections on the wheel bearing housing may be tightened only when the dimension between the centre of wheel hub and lower edge of wheel housing has been attained → Chapter. –  Attach brake carrier with brake caliper → Brake systems; Rep. gr.46. –  Tighten drive shaft bolt at wheel hub: t  Hex bolt → Chapter 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.

Distinctive features of the twelve-point head bolt with ribbing and the 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- –  Fit and secure wheel → Chapter.

Specified torques

Component	Tightening torque
Upper transverse link to wheel bearing housing t  Use new nuts and bolts t  Tighten threaded connections only when vehicle is in the normal running position	130 Nm and then turn 90° further
Wheel bearing housing to lower suspension link t  Use new nuts and bolts t  Tighten threaded connections only when vehicle is in the normal running position	90 Nm and then turn 90° further
Wheel bearing housing to track rod t  Use new nuts and bolts t  Tighten threaded connections only when vehicle is in the normal running position	130 Nm and then turn 90° further
Trailing arm to wheel bearing housing t  Use new bolts.	90 Nm and then turn 45° further
Coupling rod to wheel bearing housing t  Use new nut	45 Nm
Splash plate to wheel bearing housing	12 Nm
ABS speed sensor to wheel bearing housing	8 Nm
Shock absorber to wheel bearing housing	180 Nm
Brake disc to wheel bearing housing	4 Nm
Drive shaft to wheel hub „hexagon bolt“ t  Use new bolt.	180 Nm and then turn 180° further
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°