Mercedes model Timing Chain replacing procedure and more details?

The procedure will work for all types of Mercedes Benz Truck model vehicle.
Timing chain,Timing Chain Cover,Sprockets, & Seal.

Replacing procedure:----

1. Before servicing the vehicle, refer to the Precautions section.
2. Disconnect the negative battery cable.
3. Drain the cooling system and engine oil.
4. Remove or disconnect the following:
   
   
   Engine cover
   

   Engine cooling fan, fan clutch, and fan shroud
   

NOTE

The fan clutch is equipped with right-hand thread.

1. Place a guard plate behind the radiator/condenser to protect it from damage during removal and 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
   

WARNING

The engine must not be rotated backward.

1. Rotate the crankshaft clockwise to align the crankshaft timing marks at 40° After Top Dead Center (ATDC). Insure that the grooves in the camshafts (6 in the illustration) align with the cylinder head cover mating surface on the intake side of the cylinder heads.

Fig. Camshaft timing marks

NOTE

The timing chain cover bolts are different lengths and diameters. Note their locations for installation.

Timing chain cover

1. Lock the camshafts using the Camshaft Locking tools 112-589-00-32-00 and 112-589-01-32-00.
   
   
   Camshaft sprockets bolts
   

   Timing chain
   

To install:

1. Align the copper plated links of the timing chain with the marks on the camshaft sprockets, the crankshaft sprocket, and the balancer sprocket for the 3.2L and 3.7L engines. The 4.3L and 5.9L engines uses an idler sprocket in place of the balance shaft.
2. Install or connect the following:
   
   
   Camshaft sprockets along with the timing chain. Tighten the attaching bolts to 37 ft. lbs. (50 Nm) plus 90-100 degrees.
   
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. Tighten the bolts to 15 ft. lbs. (20 Nm).

Fig. Exploded view of timing cover components- 3.2L and 3.7L engine shown; 4.3L and 5.0L engine similar

CT sensor

Timing chain tensioner

Generator

Crankshaft pulley and tighten the bolt to 148 ft. lbs., then tighten another 95 degrees

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

1. Fill the cooling system and the crankcase to the correct levels.
   
   
   Engine cover
   

   Negative battery cable
   
2. Read fault memory, encode the radio and normalize the power windows.

These details will help.

Thanks.

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html