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1.When the rocker arm is
removed from the rocker shaft, tag them to show the
installation
location for the reinstallation of the rocker arm, the
piston arm assembly and so on.
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![](../../../img/11/AK600897AB00ENG.png)
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2.<Exhaust side
only> Set special tool Lash adjuster holder (MD998443)
to prevent the lash adjuster coming from
free and falling to the floor.
caution |
If the lash adjuster is
re-used, clean the lash adjuster. (Refer
to lash adjuster inspection .)
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![](../../../img/11/AK600895AB00ENG.png)
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Install the camshaft sprocket and
the camshaft sprocket bolt to the camshaft. Using the
special tools End yoke holder (MB990767) and Pins
(MD998719), prevent the cam position sensing
cylinder from rotating and remove it.
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![](../../../img/11/AK600826AB00ENG.png)
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caution |
Use care to prevent confusion
of the right and left bank camshafts.
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1.Apply engine oil to the camshaft journals
and cams and then install the camshafts.
note |
The left bank camshaft is
identified by a slit 4 mm wide at the rear end
of the camshaft.
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2.Install the cylinder head, placing the
dowel pin of the camshaft upward.
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1.Mate the groove on the
camshaft rear end face properly with the protrusion of the
cam position sensing cylinder so that the cam position
sensing cylinder can be installed.
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![](../../../img/11/AK600895AB00ENG.png)
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2.Install the camshaft
sprocket and the camshaft sprocket bolt to the camshaft.
Using the
special tools End yoke holder (MB990767) and Pins
(MD998719), prevent the cam position sensing
cylinder from rotating and tighten it to the specified
torque.
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![](../../../img/11/AK600898AB00ENG.png)
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Fit the lash adjuster onto the
rocker arm without allowing diesel fuel to spill out. Fit
special tool Lash adjuster holder (MD998443) to prevent the
lash adjuster coming from free and falling
to the floor.
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![](../../../img/11/AK301421AD00ENG.png)
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Install provisionally the screw to
rocker arm, insert it so that end of the screw is flush
with the edge of the rocker arm or projects slightly 3
mm.
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![](../../../img/11/AK604643AD00ENG.png)
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1.Place each rocker arm
shaft with the side having the oil holes of the
illustrated shape facing down (toward the cylinder
head). 2.Check that the oil holes on each rocker
arm shaft are in the positions shown in the
illustration.
note |
The inlet rocker arm shafts
have four bolt holes each.
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3.Check that the notch on each exhaust side
rocker arm shaft is at the positions shown
in the illustration.
note |
The exhaust rocker arm shafts
have eight bolt holes each.
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4.According the tags showing the
reinstallation locations, install the rocker arms and
all other parts on each rocker arm shaft.
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![](../../../img/11/AK604645AH00ENG.png)
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5.When installing the rocker
arm shaft, check that the identification marks are at the
positions
shown in the illustration. 6.Tighten the inlet
rocker arm shaft bolts so the specified torque of 31 ±
3
N·m. 7.Tighten the exhaust rocker arm shaft
bolts so the specified torque of 13 ±
1
N·m
note |
Pay attention to the
installation direction of the rocker shaft cap
at the exhaust side.
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8.Remove the special tool lash adjuster
holder (MD998443).
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![](../../../img/11/AK600911AB00ENG.png)
![](../../../img/11/AK600910AB00ENG.png)
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1.Use special tools MD998713
and MD998777 to install the camshaft oil
seal. 2.Screw the camshaft sprocket bolt until the
special tool touches the end face of the
cylinder head.
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![](../../../img/11/AK702529AD00ENG.png)
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3.Oil seal shall be pressed
fit to position.
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![](../../../img/11/AK900043AC00ENG.png)
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Tighten the rocker cover to the
specified torque in the sequence shown in the
illustration.
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