Disconnect timing chain - AR05.10-P-7601-01MM

ENGINE 152.9, 157, 276, 278 Engines with IWIS timing chain 

ENGINE 157 Engines with IWIS timing chain 

Fig 1: Identifying Pressure Screw (602 589 05 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Chain Separating Tool (602 589 02 33 00)

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA

To disconnect the timing chain the following tooling are required: case, chain breaker tool (01) and thrust spindle (02).

1. Cover over timing case slot with a clean rag.

   The timing case recess must be secured against parts which are falling down. Parts which have fallen into the timing case recess, must be removed.

2. Mount chain breaker tool (01) and thrust spindle (02).
3. Fit chain breaker tool (01) on the timing chain (1).

   Ensure that thrust piece (03) lies at the pin (arrow) of a timing chain link.

   Fig 4: Fitting Chain Breaker Tool On The Timing Chain

   Courtesy of MERCEDES-BENZ USA
4. Screw in thrust spindle (02) and separate timing chain (1).

   Do not let the pins that have been pushed out fall into the timing case recess.

5. Remove thrust spindle (02) and remove chain breaker tool (01).

   When taking off the chain breaker tool (01) do not allow middle lugs on the timing chain link to fall into the timing case recess.