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REMOVAL AND INSTALLATION
 
 
Pre-removal Operation
 
 
Post-installation Operation
 
 
Removal steps
1.Water pump drive belt
·Engine room side cover (RH) (Refer to Removal and Installation).
2.Crankshaft pulley center bolt
3.Crankshaft pulley washer
4.Crankshaft pulley
5.Crankshaft key
 
 
REMOVAL SERVICE POINTS
 
 
<<A>> WATER PUMP DRIVE BELT REMOVAL
caution
  • To reuse the water pump drive belt, draw an arrow indicating the rotating direction on the back of the belt using chalk to install the same direction.
  • Hang the special tool drive belt remover (MB992276 or MB993032) on the vehicle components using a cord and paper clip to prevent from falling.
1. Set special tool MB992276 or MB993032 as shown and hold it by hand.
cautionBe careful that the finger holding the special tool MB992276 or MB993032 is not pinched.
2. Slightly turn the crankshaft pulley clockwise until the special tool MB992276 or MB993032 is pinched and held between the water pump pulley and the water pump drive belt.
3. If the special tool MB992276 or MB993032 is held, move the finger off.
cautionIf the water pump drive belt is detached, be careful that the special tool MB992276 or MB993032 is also detached and fallen.
4. Slowly turn the crankshaft pulley clockwise until the water pump drive belt goes around on the special tool MB992276 or MB993032 and is detached.
5. Remove the water pump drive belt.
 
 
 
<<B>> CRANKSHAFT PULLEY CENTER BOLT/CRANKSHAFT PULLEY WASHER REMOVAL
caution
  • Use only the specified special tools, or a damaged pulley damper could result.
  • Insert the special tool pins deep into the position shown in the figure to hold the special tool without interfering with the protrusion of the timing chain case.
1. Use the following special tools to support the crankshaft pulley:
  • Front hub and flange yoke holder (MB990767)
  • Pin (MD998719)
2. Loosen the crankshaft pulley center bolt and remove the crankshaft pulley washer.
 
 
 
 
INSTALLATION SERVICE POINTS
 
 
>>A<< CRANKSHAFT PULLEY/CRANKSHAFT PULLEY WASHER/CRANKSHAFT PULLEY CENTER BOLT INSTALLATION
1. Wipe off the dirt on the crankshaft sprocket, crankshaft and crankshaft pulley as shown in the figure using a rag, and then degrease the areas.
2. Wipe off the dirt on the crankshaft pulley washer and the crankshaft pulley center bolt as shown in the figure using a rag.
noteDegrease them to prevent drop in the friction coefficient of the pressed area which is caused by oil adhesion.
3. Install the crankshaft pulley.
4. Wipe off the dirt on the crankshaft pulley washer and the crankshaft pulley center bolt as shown in the figure using a rag.
5. Apply an adequate and minimum amount of engine oil to the thread of the crankshaft pulley center bolt and the lower area of the flange.
6. Temporarily install the crankshaft pulley washer and crankshaft pulley center bolt.
cautionInsert the special tool pins deep into the position shown in the figure to hold the special tool without interfering with the protrusion of the timing chain case.
7. Use the following special tools as during removal to support the crankshaft pulley:
  • Front hub and flange yoke holder (MB990767)
  • Pin (MD998719)
8. Tighten the crankshaft pulley center bolt to the specified torque.
Tightening torque: 210 N·m (154 ft-lb)
9. Loosen the crankshaft pulley center bolt fully.
10. Tighten the crankshaft pulley center bolt to the specified torque again.
Tightening torque: 210 N·m (154 ft-lb)
 
 
 
>>B<< WATER PUMP DRIVE BELT INSTALLATION
caution
  • To reuse the water pump drive belt, install it by aligning the arrow mark on the backside of belt marked at the removal with the rotating direction.
  • Check that the notches of the notched pulley and the notches of the drive belt are fit correctly.
1. Install the water pump drive belt in the water pump pulley.
cautionBe careful that the finger holding the special tool MB992904 is not pinched.
2. Set the special tool MB992904 and water pump drive belt in the crankshaft pulley and hold it by a finger as shown.
note
  • Check that the top surface of water pump drive belt goes around on the special tool MB992904, and the water pump drive belt is fitted in the notched under the crankshaft pulley securely as shown.
  • Slightly turn the crankshaft pulley clockwise until the special tool MB992904 is pinched and held between the crankshaft pulley and the water pump drive belt as shown.
3. If the special tool MB992904 is held, move the finger off.
cautionIf the water pump drive belt is installed, be careful that the special tool MB992904 is detached and fallen.
4. Slowly turn the crankshaft pulley clockwise and install the water pump drive belt.
5. Turn the crankshaft pulley until the special tool MB992904 is detached from the crankshaft pulley.
6. Turn the crankshaft pulley clockwise on several times and check that the water pump drive belt is installed in the water pump pulley and the crankshaft pulley securely.