Front Axle

REMOVAL AND INSTALLATION

CAUTION:

- The magnetic encoder collects metallic particles easily, because it is magnetized. 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 (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 sensor head 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.













Required Special Tools:

- MB990242: Puller Shaft
- MB990244: Puller Bar
- MB990767: Front Hub and Flange Yoke Holder
- MB991354: Puller Body
- MB991897 or MB992011: Ball Joint Remover

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 MB990767 to counter the hub as shown in the figure to remove the driveshaft nut.

[[B]] BRAKE CALIPER ASSEMBLY REMOVAL

1. Remove the brake caliper assembly with brake hose.

2. Secure the removed brake caliper assembly with a wire or other similar material at a position where it will not interfere with the removal and installation of the hub knuckle assembly.

[[C]] 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 cord.

Install special tool 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.

[[D]] HUB KNUCKLE ASSEMBLY REMOVAL





CAUTION:

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





If the driveshaft is seized, use special tools MB990242 and MB990244, MB991354 and MB990767 to push the driveshaft out from the hub.

INSTALLATION SERVICE POINT

]]A[[ WASHER/DRIVESHAFT NUT INSTALLATION





CAUTION:

- The magnetic encoder collects metallic particles easily, because it is magnetized. 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 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. Be sure to install the driveshaft washer in the illustrated direction.
2. Using special MB990767, tighten the driveshaft nut. At this time, tighten the nut to the specified lower limit torque so that the pin hole may align with cotter pin.
Tightening torque: 144 - 176Nm (107 - 129 ft-lb)
3. If the pin hole does not align with the pin, tighten the driveshaft nut [less than 176 Nm (129 ft-lb)] and find the nearest hole, then fit the cotter pin.