Draw in timing chain - AR05.10-P-7601-04CO

ENGINE 642 in MODEL 166, 204, 221, 292 

ENGINE 642 in MODEL 207 except CODE 927 (EU6 emissions standard) 

ENGINE 642 in MODEL 212 except CODE 927 (EU6 emissions standard) 

ENGINE 642 in MODEL 218 except CODE 927 (EU6 emissions standard) 

Fig 1: Identifying Tie-Down Set (642 589 04 40 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Assembly Links (602 589 02 40 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Case (602 589 00 98 00)

Courtesy of MERCEDES-BENZ USA

The following special tools are used to pull in the timing chain: hold-down tool, assembly link and case.

Parts which have fallen into the timing case recess or in the cylinder head must be removed.

Engine damage could occur otherwise.

1. Cover timing case recess and cylinder head with clean rag.
2. Connect new timing chain (1) and old timing chain (2) with the assembly connecting link (3), the outer assembly plate (4) and the assembly locking element (5).

   The bores (arrow) of the new timing chain (1) must point outwards.

3. Remove rag from timing case recess and cylinder head. Otherwise when cranking the engine, this can be drawn into the timing case recess.
   Fig 4: Timing Chain, Old Timing Chain, Assembly Connecting Link & Assembly Locking Element

   Courtesy of MERCEDES-BENZ USA
4. Slowly turn engine at center bolt of the crankshaft in the direction of engine rotation until the ends of the new timing chain (1) can be connected.

   During the pulling in procedure ensure that the old timing chain (2) and the new timing chain (1) is freely movable and cannot jam. The old timing chain (2) and the new timing chains (1) are always held by hold-down tool (6) in mesh with camshaft sprockets.

5. Cover timing case recess and cylinder head with clean rag.
6. Remove assembly locking element (5), outer assembly plate (4), assembly connecting link (3) and old timing chain (2).

   The assembly locking element (5), the outer assembly plate (4) and assembly connecting link (3) are just assembly aids and are not suitable for running the engine.