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1.The staked portion of the driveshaft nut must face upwards.
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2.
| caution |
- Make sure that the lock
nut chisel is set in the correct direction. Otherwise, the groove or thread in the driveshaft
may be broken, or the tip of the chisel may be chipped.
- Never use a chisel which tip is damaged.
- For how to use the lock nut chisel, refer to the manufacturer’s operating
instructions.
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Set the special tool lock nut chisel (MB992700) in the groove of the driveshaft with its
"UPPER" mark facing upwards. Then strike the staked portion of the driveshaft nut with the chisel
and a hammer to raise up.
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3.
| caution |
Be careful not to damage the thread of the driveshaft.
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Raise up the staked portion of the driveshaft nut until it does not interfere with the
shaft thread.
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4.
| caution |
- Never use a impact wrench to loosen the
driveshaft nut.
- Do not apply the vehicle weight on the wheel bearing with the driveshaft nut loosened.
Otherwise, the wheel bearing may be broken.
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Use special tool front hub and flange yoke holder (MB990767) to counter the hub as shown
in the figure to remove the driveshaft nut.
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1.Remove the caliper assembly with brake hose.
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2.Secure the removed 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.
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Use a hexagon wrench to remove the stabilizer link and strut connection nut as shown in
the figure.
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1.
| caution |
- Do not remove the nut from ball joint. Loosen
it and use the special tool to avoid possible damage to ball joint threads.
- Hang the special tool with cord to prevent it from falling.
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Install special too ball joint remover (MB991897 or MB992011) as shown in the figure.
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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.
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3.Unscrew the bolt to disconnect the ball joint.
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| 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.
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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)
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Use a hexagon wrench to install the stabilizer link and strut connection nut as shown
in the figure.
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| 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.
- Insert the driveshaft so that no hub bolt is vertically above the groove of the
driveshaft assembly.
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1.Check the hub seated surface for damage or corrosion. Whenever solvent is used for
removing the corrosion, the surface should be degreased.
2.Check that the new driveshaft nut can be turned smoothly by hand. Then tighten it
until it is seated.
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3.4.Using special tool front hub and flange yoke holder (MB990767), tighten the driveshaft
nut.
Tightening torque: 270 ± 27 N·m
5.After tightening to the specified torque, check that the nut is seated securely.
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6.Use the chisel and a hammer to stake the nut until the centre in the staked portion reaches
the shown dimension.
7.Finally, check that the nut is not cracked at its staked portion.
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