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Tightening Procedure For Crankshaft Bearing Caps - AR03.20-P-4351-02MR

Engine 133, 139, 260, 270, 274, 282 

Topical note  Notes on threaded connections fastened using a tightening angle-based tightening process   AH00.00-P-0020-01A
CRANKSHAFT BEARING CAP

Number Designation Engine 133 Engine 139
BA03.20-P-1001-01B Bolt for crankshaft bearing cap Stage 1 Nm 38 40
Stage 2 ∠° 90 90
CRANKSHAFT BEARING CAP

Number Designation Engine 260 Engine 270
BA03.20-P-1001-01B Bolt for crankshaft bearing cap Stage 1 Nm 36 36
Stage 2 ∠° 120 120
CRANKSHAFT BEARING CAP

Number Designation Engine 274
BA03.20-P-1001-01B Bolt for crankshaft bearing cap Stage 1 Nm 36
Stage 2 ∠° 120
CRANKSHAFT

Number Designation Engine 282
BA03.20-P-1001-01P Bolt, crankshaft bearing cap to crankcase M14 Stage 1 Nm 32
Stage 2 ∠° 63

Shown on engine 274 from below 

G12816472Courtesy of MERCEDES-BENZ USA
  1. Oil crankshaft bearing cap bolts on thread and bolt head contact surface.
  2. Tighten crankshaft bearing cap bolts in the numerical sequence Engine 133, 139, 260, 270, 274

    TORQUE SPECIFICATION Engine 282

    TORQUE SPECIFICATION .

    IMPORTANT Observe torque and tightening angle of the crankshaft bearing cap bolts.

    IMPORTANT If no angle tightener is available, continue turning crankshaft bearing cap bolts with a socket wrench and breaker bar in one move to specified angle. To exclude an angular error, do not use a bending rod torque wrench when tightening.

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