Mercedes-Benz Truck 2000-05

Timing Chain Cover & Seal

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Drain the cooling system and engine oil.
  6.  
  7. Remove or disconnect the following:
    NOTE
    The fan clutch is equipped with right-hand thread.



    Engine cover
     
    Engine cooling fan, fan clutch, and fan shroud
     

  8.  
  9. Place a guard plate behind the radiator/condenser to protect it from damage during removal and installation.
    NOTE
    The timing chain cover bolts are different lengths and diameters. Note their locations for installation.



    Accessory drive belt and tensioner
     
    Cylinder head covers
     
    Coolant hoses
     
    A/C compressor and wire aside
     
    Oil pan
     
    Crankshaft pulley
     
    Timing chain tensioner
     
    Oil filter housing and heat exchanger
     
    Water pump pulley
     
    Timing chain cover
     

  10.  
  11. Pull the crankshaft seal from the cover. Insert a new one using a suitable seal driver.
  12.  

To install:

  1. Install or connect the following:


  2.  
  3. Clean the sealing surfaces and apply a bead of silicone sealant to the timing chain cover.
    NOTE
    The cover must be installed within ten minutes after the sealant is applied.



    Timing cover. Apply sealant to the bolts indicated in the illustration. Tighten the bolts to 15 ft. lbs. (20 Nm)

    Click image to see an enlarged view

    Fig. Apply sealant to the bolts marked with arrows



    Click image to see an enlarged view

    Fig. Exploded view of timing cover components-M112 shown; M113 similar

     
    CT sensor
     
    Timing chain tensioner
     
    Generator
     
    Crankshaft damper
     
    Air pump, if equipped
     
    Air conditioning compressor and the power steering pump
     
    Cylinder head covers
     
    Oil pan
     
    Accessory drive belt and tensioner
     
    Upper and lower coolant hoses
     
    Fan shroud, cooling fan, and fan clutch
     

  4.  
  5. Fill the cooling system and the crankcase to the correct levels.

    Engine cover
     
    Negative battery cable
     

  6.  
  7. Read fault memory, encode the radio and normalize the power windows.
  8.  

 
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