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1.The staked portion of the
driveshaft nut must face upwards.
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![](../../../img/26/ACB02689AB00ENG.png)
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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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![](../../../img/26/ACA03657AE00ENG.png)
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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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![](../../../img/26/AC102462AB00ENG.png)
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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 brake caliper
assembly with brake hose.
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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.
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![](../../../img/26/AC208247AJ00ENG.png)
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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 tool ball joint remover (MB991897 or
MB992011) as shown in the figure.
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![](../../../img/26/AC106821AD00ENG.png)
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2.Turn the bolt and knob as
necessary to make the jaws of special tool parallel, tighten
the bolt by hand and confirm that the jaws are still
parallel.
note |
When adjusting the jaws in
parallel, make sure the knob is in the position
shown in the
figure.
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3.Tighten the bolt with a wrench to
disconnect the tie rod end, lower arm ball joint.
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![](../../../img/26/AC504925AB00ENG.png)
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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.
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![](../../../img/26/AC100128AC00ENG.png)
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If the driveshaft is seized, use
the following special tools to push the driveshaft out
from the hub.
- Front hub &
flange yoke holder (MB990767)
- Axle shaft puller (MB990241)
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![](../../../img/26/AC504925AB00ENG.png)
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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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![](../../../img/26/ACA01201AB00ENG.png)
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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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![](../../../img/26/ACA01211AD00ENG.png)
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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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