![](../../../img/11/AK600819AB00ENG.png)
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1.Remove the upper
tightening bolt of the auto-tensioner. 2.
caution |
The auto-tensioner rotates
centring on the flange bolt
due to the rod thrust, so please make sure your
finger is not trapped.
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Slowly loosen the (lower) tightening bolts of the
auto-tensioner. Remove the auto-tensioner
rod from the tensioner arm and tilt the auto-tensioner to
the stopper position. 3.Remove the lower
tightening bolt of the auto-tensioner.
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1.Before the timing belt is
removed, align the timing marks of the camshaft sprocket
and crankshaft sprocket with the No.1 at the Top Dead centre
of the compression stroke.
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![](../../../img/11/AK600824AA00ENG.png)
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Mark the belt running direction for
reference in reinstallation.
note |
If there is oil or water on
any part, check the front case oil seal,
camshaft oil seal,
and water pump for leaks.
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note |
After the timing belt is
removed, do not turn the crankshaft sprocket and
the camshaft
sprocket.
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![](../../../img/11/AK601718AB00ENG.png)
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caution |
Because of the shallow hexagon
hole of the hexagon socket
head bolt, firmly insert the tool and carefully
work not to damage the hexagon hole.
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Remove the idler pulley using a hexagon wrench with
8 mm width across flats.
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![](../../../img/11/AK600895AB00ENG.png)
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Use special tools End yoke holder
(MB990767) and Pins (MD998719) to prevent the camshaft
sprocket from turning, and then loosen the camshaft sprocket
bolt.
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![](../../../img/11/AK600895AB00ENG.png)
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Use special tools End yoke holder
(MB990767) and Pins (MD998719) to prevent the camshaft
sprocket from turning, and then tighten the camshaft
sprocket bolt. Tightening torque: 90 ±
10 N·m
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![](../../../img/11/AK600812AB00ENG.png)
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1.Clean the hole in the
crankshaft sprocket. 2.Clean and degrease the
mating surfaces of the crankshaft sprocket.
note |
Degreasing is necessary to
prevent decrease in friction on the mating
surfaces.
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3.Install the crankshaft sprocket to the
crankshaft.
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![](../../../img/11/AK601718AB00ENG.png)
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caution |
Because of the shallow hexagon
hole of the hexagon socket
head bolt, firmly insert the tool and carefully
work not to damage the hexagon hole.
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Install the idler pulley using a hexagon wrench with
8 mm width across flats.
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![](../../../img/11/AK600823AB00ENG.png)
![](../../../img/11/AK600822AB00ENG.png)
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1.Check the timing marks of
the crankshaft sprocket and the camshaft sprocket are
aligned
with the No.1 at the Top Dead centre of the compression
stroke. If they are not, align the timing
marks again, paying attention to the interference between
the valve and the piston. 2.Install the timing
belt on each sprocket in the following sequence. (1)
Install the timing belt on the crankshaft sprocket and then
on the water pump pulley,
while tightening it to prevent slackness. (2)
Line up the timing marks of the left bank camshaft
sprockets. (3)
Install the timing belt on the idler pulley, while taking up
the slack. (4)
Install the timing belt on the right bank camshaft
sprocket. (5)
Install the timing belt on the tensioner
pulley. 3.Check to see that the timing marks of
all the sprockets are in a alignment. 4.Pull out
the pin of the auto-tensioner. 5.Using special
tool Crankshaft wrench (MD998716), rotate the crankshaft two
turns clockwise
and leave it alone for approximately five minutes.
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![](../../../img/11/AK600821AB00ENG.png)
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6.Check that the projection
of the rod of the auto-tensioner is within the standard
value. Standard value: 9.1 -
13.4 mm
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