REMOVAL AND INSTALLATION


caution
  • The wheel speed detection magnetic encoder collects metallic particles easily, because it is magnetised. Make sure that the magnetic encoder should not collect metallic particles. Check that there is not any trouble prior to reassembling it.
  • When removing and installing the front wheel hub assembly, make sure that the magnetic encoder for wheel speed detection (integrated with the inner oil seal) does not contact with surrounding parts to avoid damage.
  • When removing and installing the front wheel speed sensor, make sure that the pole piece at the end does not contact with surrounding parts to avoid damage.
  • The parts indicated by * are the nuts with friction coefficient stabilizer. In removal, ensure there is no damage, clean dust and soiling from the bearing and thread surfaces, and tighten them to the specified torque.
Post-installation operationUsing your fingers, press the ball joint dust cover to check for a crack or damage.




Removal steps


1.
 Split pin
<<A>>
 >>A<<
 2.
 Driveshaft nut

>>A<<
 3.
 Washer


4.
 Front wheel speed sensor


5.
 Front wheel speed sensor harness bracket


6.
 Brake hose bracket
<<B>>
7.
 Caliper assembly


8.
 Front height sensor to lower arm connection <Vehicles with headlamp automatic leveling system>
<<C>>
9.
 Brake disc


10.
 Stabilizer link connection


11.
 Nut (lower arm ball joint connection)
<<D>>
12.
 Self-locking nut (tie-rod end connection)
<<E>>
13.
 Driveshaft


14.
 Hub knuckle assembly and strut mounting bolt and nuts


15.
 Hub knuckle assembly

REMOVAL SERVICE POINTS

<<A>> DRIVESHAFT NUT REMOVAL
caution Do not apply the vehicle weight on the front wheel hub assembly with the driveshaft nut loosened. Otherwise, the wheel bearing may be broken.

Use special tool front hub and flange yoke holder (MB990767) to counter the hub as shown in the figure to remove the driveshaft nut.

<<B>> CALIPER ASSEMBLY REMOVAL
Retain the removed caliper assembly with a wire and the like to prevent from falling.

<<C>> BRAKE DISC REMOVAL

If the brake disc removal is difficult, install bolts (M8 x 1.25 mm) shown in the figure, and tighten them evenly and gradually to remove the brake disc.

<<D>> SELF-LOCKING NUT (TIE-ROD END CONNECTION) REMOVAL

1.
caution
  • Loosen the self-locking nut (tie-rod end connection) from the ball joint, but do not remove here. Use the special tool.
  • To prevent the special tool from dropping off, suspend it with a rope.
Install special too ball joint remover (MB991897 or MB992011) as shown in the figure.

2.Turn the bolt and knob to make the special tool jaws parallel, then hand-tighten the bolt. After tightening, check that the jaws are still parallel.
note To adjust the special tool jaws to be parallel, set the orientation of the knob as shown in the figure.
3.Unscrew the bolt to disconnect the ball joint.

<<E>> DRIVESHAFT REMOVAL

caution
  • The wheel speed detection magnetic encoder collects metallic particles easily, because it is magnetised. Make sure that the magnetic encoder does not collect metallic particles.
  • When removing the driveshaft, make sure that it does not contact with the wheel speed detection magnetic encoder (integrated with the inner oil seal) to avoid damage.

If the driveshaft is seized, use the following special tools to push the driveshaft out from the hub:

  • Puller shaft (MB990242)
  • Puller bar (MB990244)
  • Front hub and flange yoke holder (MB990767)
  • Puller body (MB991354)

INSTALLATION SERVICE POINTS

>>A<< WASHER/DRIVESHAFT NUT INSTALLATION

caution
  • The wheel speed detection magnetic encoder collects metallic particles easily, because it is magnetised. Make sure that the magnetic encoder should not collect metallic particles. Check that there is not any trouble prior to reassembling it.
  • When installing the driveshaft, make sure that it does not contact with the wheel speed detection magnetic encoder (integrated with the inner oil seal) to avoid damage.
  • Do not apply the vehicle weight on the wheel bearing before fully tightening the driveshaft nut. Otherwise, the wheel bearing may be broken.

1.Incorporate the driveshaft washer as shown in the figure.
2.Using special tool front hub and flange yoke holder (MB990767), tighten the driveshaft nuts. At this time, tighten the nuts within the specified torque range considering the final tightening.
Tightening torque: 144 - 176 N·m
3.If the pin holes do not align with the pins, tighten the driveshaft nut (less than 200 N·m) and find the nearest hole then bend the split pin to fit it.