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caution |
- To reuse the water pump belt, draw an arrow
indicating the rotating direction on the back of the water pump belt using chalk to install
the same direction.
- Hang the special tool drive belt remover (MB992276) on the vehicle components (including
front sidemembers) using a cord and paper clip to prevent from falling.
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1.Mount the special tool drive belt remover (MB992276) in between the water pump pulley
and the water pump belt, then hold it with your fingers.
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2.
caution |
Be careful that the finger holding the special tool MB992276 is not pinched.
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Slightly turn the crankshaft pulley clockwise until the special tool MB992276 is pinched
and held between the water pump pulley and the water pump belt. 3.If the special tool MB992276 is held, move the finger off. 4.
caution |
If the water pump belt is detached, be careful that the special
tool MB992276 is also detached and fallen.
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Slowly turn the crankshaft pulley clockwise until the water pump belt goes aground on
the special tool MB992276 and is detached. 5.Remove the special tool MB992276.
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1.Use Front hub and flange yoke holder (MB990767) and Pin (MD998754) to
insert the pin into the crankshaft pulley hole and prevent it from rotating. 2.Remove the crankshaft pulley centre bolt.
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1.If the crankshaft pulley is replaced, hit the dowel pin with a hammer to press-fit it
to the position shown in the illustration.
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2.Use Front hub and flange yoke holder (MB990767) and Pin (MD998754) to
insert the pin into the crankshaft pulley hole and prevent it from rotating.
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3.Use a waste to wipe off the dirt on the crankshaft pulley centre bolt, crankshaft thread
hole and washer. 4.Use a waste to wipe off the dirt on the crankshaft pulley, the crank shaft and the
oil pump drive shaft. Remove the grease on the portion shown in the illustration.
note |
Remove the grease in order that adhered oil cannot decrease the friction coefficient of
the pressed area.
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5.Install the crankshaft pulley. 6.Apply an appropriate and minimum amount of engine oil to the thread
portion of the crankshaft pulley centre bolt and the lower portion of the flange. 7.Install the crankshaft pulley washer to the crankshaft pulley centre
bolt. 8.Tighten the crankshaft pulley centre bolt to the tightening torque
of 250 N·m. 9.Loosen the crankshaft pulley centre bolt fully. 10.Tighten the crankshaft pulley centre bolt to the tightening torque110
N·m again.
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11.As shown in the illustration "A," apply the paint mark to the crankshaft pulley on the
extended line of the corner adjacent to the one of the crankshaft pulley centre bolt corners. 12.
caution |
- If the tightening angle
is smaller than the specified tightening angle, the appropriate tightening capacity cannot be
secured.
- If the tightening angle is larger than the specified tightening angle, remove the
bolt to start from the beginning again according to the procedures.
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Tighten the crankshaft pulley centre bolt an additional 60°. Make sure the paint
mark of crankshaft pulley centre bolt is aligned with the paint mark of crankshaft pulley as
shown in the illustration "B."
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1.
caution |
Check that the notches of the notched pulley and the notches of the water pump belt are
fit correctly.
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Place the water pump belt onto the front step (rear 3 ribs area) of crankshaft pulley,
slowly turn the crankshaft pulley clockwise with the water pump belt on the water pump pulley side
held with your fingers to install the water pump belt.
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2.
caution |
Hang the special tool drive belt installer (MB992288)
on the vehicle components (including front sidemembers) using a cord and paper clip to prevent
from falling.
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Set the special tool drive belt installer (MB992288) to the crankshaft pulley.
note |
Slightly turn the crankshaft pulley clockwise until the special tool drive belt installer
(MB992288) is pinched and held between the water pump belt and the crankshaft pulley.
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3.Slowly turn the crankshaft pulley clockwise and install the water pump belt. 4.Turn the crankshaft pulley clockwise on several times and check that the water pump
belt is installed in the water pump pulley and the crankshaft pulley securely.
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