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Tightening connecting rod bolts - AR03.10-P-6111-02AMG

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ENGINE 156 

MODIFICATION NOTES

3.2.12 Value modified: Connecting rod bearing cap on connecting rod, Stage 3   *BA03.10-P-1001-01Q 
CONNECTING ROD

Number Designation Engine 156
BA03.10-P-1001-01Q Connecting rod bearing cap on connecting rod Stage 1 Nm 10
Stage 2 Nm 40
Stage 3 ∠° 90

NOTES Do not use impact wrench or compressed air tool to screw in otherwise the threaded holes will be damaged.

NOTES Connecting rod bolts must  be replaced.

The previously installed connecting rod bolts must not be used again otherwise loosening can occur and associated engine damage can occur.

  1. Lubricate the bolt thread and head contact surface with engine oil.
  2. Tighten connecting rod bolts.

    IMPORTANT Observe the tightening specification and tightening torque.

    IMPORTANT If no angle tightener is available, continue turning the connecting rod bolts to the specified angle using a socket wrench and locking handle. Do not use a flexi-rod torque wrench for tightening in order to avoid any angle errors.

    Fig 1: Tightening Connecting Rod Bolts
    G10240571Courtesy of MERCEDES-BENZ USA
Tightening specification   Stages (per connecting rod)
1 Alternate tightening of connecting rod bolts Stage 1
2 Alternate further tightening of connecting rod bolts Stage 2
3 Alternate tightening of connecting rod bolts as per tightening angle Stage 3
4 Alternate loosening of connecting rod bolts Stage 4
5 Alternate tightening of connecting rod bolts Stage 5
6 Alternate further tightening of connecting rod bolts Stage 6
7 Alternate tightening of connecting rod bolts as per tightening angle Stage 7