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REMOVAL AND INSTALLATION
 
 
Pre-removal Operation
  • Engine Room Under Cover Front B and Engine Room Side Cover (RH) Removal (Refer to GROUP 51, Under Cover ).
Post-installation Operation
  • Generator Drive Belt Tension Check (Refer to ).
  • Auto Tensioner Check (Refer to ).
  • Engine Room Under Cover Front B and Engine Room Side Cover (RH) Installation (Refer to GROUP 51, Under Cover ).
Removal steps
<<A>>1.Generator drive belt
<<B>>>>A<<2.Crankshaft pulley center bolt
<<B>>>>A<<3.Crankshaft pulley washer
<<B>>>>A<<4.Crankshaft pulley

Required Special Tools:
  • MB990767: Front Hub and Flange Yoke Holder
  • MD998719: Pin
 
 
REMOVAL SERVICE POINTS
 
 
<<A>> GENERATOR DRIVE BELT REMOVAL
1.
cautionWhen the generator drive belt is reused, draw an arrow indicating the rotating direction on the back of the belt using chalk to install the same direction.
Turn the drive belt auto-tensioner to counterclockwise, and insert the L-shaped hexagon wrench to the auto-tensioner hole in order to fix the auto-tensioner.
2. Remove the generator drive belt.
 

 
 
<<B>> CRANKSHAFT PULLEY CENTER BOLT/ CRANKSHAFT PULLEY WASHER/CRANKSHAFT PULLEY REMOVAL
cautionUse only the specified special tools, or a damaged pulley damper could result.
Use special tools MB990767 and MD998719 to remove the crankshaft pulley from the crankshaft.
cautionProvide one punch mark on the head of the crankshaft pulley center bolt each time the bolt is removed. Replace the bolt that already has three punch marks. (The evidence of having been tightened three times)
 
 
 
 
INSTALLATION SERVICE POINT
 
 
>>A<< CRANKSHAFT PULLEY/CRANKSHAFT PULLEY WASHER/CRANKSHAFT PULLEY CENTER BOLT INSTALLATION
1.
cautionBefore installing the crankshaft pulley center bolt, check the number of punch marks on its head. (The bolt is reusable if it is two or less.) If the bolt has three punch marks, replace it.
Clean the bolt hole in crankshaft pulley center bolt and crankshaft pulley's seating surface.
2. Degrease the cleaned seating surface of the front flange and crankshaft pulley.
3. Install the front flange and crankshaft pulley.
4. Apply oil to the threads of crankshaft pulley center bolt and the outer surface of crankshaft pulley washer.
5. Use special tools MB990767 and MD998719 to hold the crankshaft pulley.
6. Tighten the crankshaft pulley center bolt to 110 N·m (81 ft-lb).
7. Make a paint mark on the crankshaft pulley center bolt.
8.
caution
  • If the crankshaft pulley center bolt is turned less than 60 degrees, proper fastening performance may not be achieved. Be careful to tighten the crankshaft pulley center bolt exactly 60 degrees.
  • If the crankshaft pulley center bolt is overtightened (exceeding 60 degrees), loosen the crankshaft pulley center bolt completely and then retighten it by repeating the tightening procedure from step 6.
Make a paint mark on the crankshaft pulley center bolt end at a position 60 degrees from the paint mark made on the washer in the direction of tightening the crankshaft pulley center bolt.
9. Turn the crankshaft pulley center bolt another 60 degrees and make sure that the paint marks on the washer and crankshaft pulley center bolt are aligned.
10. Loosen the crankshaft pulley center bolt fully.
11. Tighten the crankshaft pulley center bolt to 110 N·m (81 ft-lb).
12. Make a paint mark on the crankshaft pulley center bolt.
13.
caution
  • If the crankshaft pulley center bolt is turned less than 60 degrees, proper fastening performance may not be achieved. Be careful to tighten the crankshaft pulley center bolt exactly 60 degrees.
  • If the crankshaft pulley center bolt is overtightened (exceeding 60 degrees), loosen the crankshaft pulley center bolt completely and then retighten it by repeating the tightening procedure from step 6.
Make a paint mark on the crankshaft pulley center bolt end at a position 60 degrees from the paint mark made on the washer in the direction of tightening the crankshaft pulley center bolt.
14. Turn the crankshaft pulley center bolt another 60 degrees and make sure that the paint marks on the washer and crankshaft pulley center bolt are aligned.