Illustration 20 Positions for measuring the bow of the cylinder head (typical example)

Illustration 18 Bolt tightening sequence for the cylinder head

Illustration 22 Bolts, nuts, and components of the cylinder head

TM-5-3895-382-24
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TM 5-3895-382-24 Illustration 20 Positions for measuring the bow of the cylinder head (typical example) Maximum permissible amount of bow (curve of cylinder head) Naturally aspirated engines A.............................................................0.08 mm (.003 inch) B.............................................................0.15 mm (.006 inch) C.............................................................0.15 mm (.006 inch) Turbocharged engines A.............................................................0.13 mm (.005 inch) B.............................................................0.25 mm (.010 inch) C.............................................................0.25 mm (.010 Inch) Tighten the bolts of the inlet manifold (not shown) to the following torque: ...................................................44 Nm (32 lb-ft) Tighten exhaust manifold nuts (not shown) to the following torque: Plated ..........................................................44 Nm (32 lb-ft) Plain ............................................................50 Nm (37 lb-ft) Type 2 Engines and 7BJ Engines NOTE: For a complete description of Type 1 and Type 2 engines, refer to the Specifications Module, "Engine Design" for more information. Illustration 21 Bolt tightening sequence for the cylinder head Use the following procedure in order to tighten the cylinder head bolts: 1. Put engine oil on the threads of bolts. Tighten bolts (1) through bolts (22) in a numerical sequence in Illustration 21. Torque for bolts ........................................110 Nm (81 lb-ft) 2. Tighten bolts (1) through bolts (22) again in a numerical sequence. Torque for bolts ........................................110 Nm (81 lb-ft) 3. Rotate bolts (1) through bolts (26) in a numerical sequence to the following values: a. Tighten the bolts of short length "S" to the following value. Rotate the bolts in a clockwise direction:....................................................150 degrees b. Tighten the bolts of medium length "M" to the following value. Rotate the bolts in a clockwise direction:....................................................180 degrees c. Tighten the bolts of long length "L" to the following value. Rotate the bolts in a clockwise direction .....................................................210 degrees 5-18

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