194000567 - 4450C28 FRONT WHEEL HUB,LEFT OR RIGHT - R.R WITH WHEEL REMOVED, CHECK WHEEL GEOMETRY SEPARATELY

Removing ( Refitting )

The following procedure describes the removing-refitting of the left front wheel hub, carry out the same operations for the right front wheel hub.

- Position the vehicle on a lift.    Op. 4450B02 LEFT FRONT WHEEL - R.R    Op. 3310A48 FRONT BRAKE DISC (ONE), LEFT OR RIGHT - R.R1. Remove the front wheel hub cap.

Removing the front wheel hub cap destroys it.

2. Undo the nut (2a) securing the front drive shaft to the wheel hub using the tool (2b) for counter-torque.

Tool	Description	Function	Validity
1870815000	Counter-torque	Loosen/tighten nut securing front driveshaft to wheel hub

1. Undo the bolts fixing the front suspension shock absorber to the steering knuckle.2. Disconnect the electrical connection for the wheel rpm sensor.

	Description	Connector
2	Left front wheel sensor for ABS	See K070 LEFT FRONT WHEEL SENSOR FOR ABS

1. Undo the nut fixing the steering rod to the front steering knuckle.2. Disconnect the steering rod (2a) from the front steering knuckle using the tool (2b).

Tool	Description	Function	Validity
1871000700	Extractor	Extracting steering rod from steering knuckle

1. Use the tool to move the driveshaft back from the wheel hub.

Tool	Description	Function	Validity
2000001600	Extractor	Retract driveshaft from front wheel hub

1. Undo the bolt (1a) and disconnect the lower track control arm for the front suspension (1b) from the steering knuckle pulling it downwards.

Do not use expansion tools for disconnecting the track control arm from the steering knuckle.

- Remove the steering knuckle complete with front wheel hub.1. Place the steering knuckle complete with front wheel hub in a vice fitted with protective jaws.2. Undo the bolts (2a) and remove the front wheel hub (2b) with built in wheel rpm sensor from the steering knuckle. Refitting ( Removing ) 1. Fit the front wheel hub (1a) with built in wheel rpm sensor on the steering knuckle and secure it tightening the new bolts (1b) to the recommended torque.

Component	Fastening	dia	Value (daNm)	Validity
Front wheel hub	Bolt (to be replaced)	M10	(steering knuckle side) 9.0 - 11.0 + 60°

2. Remove the steering knuckle complete with front wheel hub from the vice. - Place the steering knuckle complete with front wheel hub in its housing.- Refit the drive shaft in its seat on the wheel hub and secure by screwing in a new nut without tightening.1. Connect the lower track control arm (1a) to the front hub steering knuckle and tighten a new bolt (1b) to the specified torque.

Fit the bolt from the front towards the rear of the vehicle.

Component	Fastening	dia	Value (daNm)	Validity
Front suspension lower track control arm	Bolt (to be replaced)	M10	(steering knuckle side) 2.7 - 3.3 + 60°

1. Tighten the new nut (1a) securing the front driveshaft to the wheel hub using the tool (1b) for counter-torque following the instructions given below.

Tool	Description	Function	Validity
1870815000	Counter-torque	Loosen/tighten nut securing front driveshaft to wheel hub

- Tighten the nut to a pre-torque of 12.0 - 18.0 daNm.- Loosen it by 45°.- Tighten to 22.5 - 27.5 daNm.2. Refit a new front hub cap in place using the appropriate tool. 1. Connect the steering rod (1a) to the front hub steering knuckle and tighten a new bolt (1b) to the specified torque.

Component	Fastening	dia	Value (daNm)	Validity
Steering rods	Nut	M12	(steering knuckle side) 3.0 - 4.0

1. Connect the electrical connection for the wheel rpm sensor.2. Tighten the new bolts fixing the front suspension shock absorber to the steering knuckle to the recommended torque.

Component	Fastening	dia	Value (daNm)	Validity
Front shock absorber	Bolt (to be replaced)	M12	(steering knuckle side) 7.7 - 9.4 +75°

    Op. 3310A48 FRONT BRAKE DISC (ONE), LEFT OR RIGHT - R.R    Op. 4450B02 LEFT FRONT WHEEL - R.R- Remove the vehicle from the lift.