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Torque diagram of exhaust manifold - AR09.40-P-6020-11CD

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ENGINE 651 in MODEL 166, 172, 204, 205, 207, 212, 218, 221, 222, 253 

EXHAUST MANIFOLD

Number Designation Engine 651
BA14.10-P-1001-01P Nut on exhaust manifold to cylinder head for steel exhaust manifold Nm 30
EXHAUST MANIFOLD

Number Designation Engine 651
BA14.10-P-1003-01P Nut on exhaust manifold to cylinder head for cast exhaust manifold Stage 1 Nm 15
Stage 2 Nm 35

IMPORTANT Note the different tightening pattern for the exhaust manifold casting and the steel exhaust manifold.

Tightening pattern for exhaust manifold casting 

IMPORTANT Do not use any assembly paste or similar product.

  1. Tighten nut (4) and subsequently nut (6) to the first stage of the prescribed torque TORQUE SPECIFICATION .
  2. Tighten nuts (1 to 8) in ascending sequence to the second stage of the prescribed torque TORQUE SPECIFICATION .

    Tightening pattern for steel exhaust manifold 

    IMPORTANT Do not use any assembly paste or similar product.

  3. Tighten nuts (1 to 8) in ascending sequence with the prescribed torque TORQUE SPECIFICATION .
    Fig 1: Steel Exhaust Manifold Tightening Sequence
    G10240893Courtesy of MERCEDES-BENZ USA