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Bolt Tightening Procedure For Cylinder Head Cover - AR01.20-P-5014-03MT

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Engine 133 in model 117, 156, 176 

Engine 260 in model 118, 177, 247 

Engine 270 in model 117, 156, 176, 242, 246.2 

Notice  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
MODIFICATION NOTES

30.06.2023 Replace screws (1 to 24).    
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER, CAMSHAFT HOUSING

Number Designation Engine 133 Engine 270
BA01.20-P-1001-01R Screw/bolt, cylinder head cover to cylinder head Stage 1 Nm 10 10
Stage 2 ∠° 90 90
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER

Number Designation Engine 260
BA01.20-P-1001-03C Screw/bolt, cylinder head cover to cylinder head Stage 1 Nm 10
Stage 2 ∠° 90

Shown on Engine 270 

IMPORTANT Tighten bolts (1 to 24) of cylinder head cover in numerical order.

IMPORTANT Replace screws (1 to 24).

Cylinder head cover

G14688191Courtesy of MERCEDES-BENZ USA
  1. 1.1 Engine 133 in model 117, 156, 176 Engine 270 in model 117, 156, 176, 242, 246.2

    Tighten bolts (1 to 24) to stage 1 TORQUE SPECIFICATION .

  2. 1.2 Engine 260 in model 118, 177, 247

    Tighten bolts (1 to 24) to stage 1 TORQUE SPECIFICATION .

  3. 2.1 Engine 133 in model 117, 156, 176 Engine 270 in model 117, 156, 176, 242, 246.2

    Tighten bolts (1 to 24) to stage 2 TORQUE SPECIFICATION .

  4. 2.2 Engine 260 in model 118, 177, 247

    Tighten bolts (1 to 24) to stage 2 TORQUE SPECIFICATION .