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
