7-28
Chapter 7 ASSEMBLY OF BASIC ENGINE
5.5 Cylinder Head Gasket - Install
(1) Wipe off oil, grease and other contamination from the
cylinder head bottom surface and crankcase top sur-
face.
(2) Install the cylinder head gasket coated with liquid gas-
ket onto crankcase with dowel pin and hole in align-
ment.
Cylinder Head Gasket - Install
5.6 Cylinder Head Assembly - Install
(1) Apply engine oil to the cylinder head bolt threads, bolt
seats and washer surfaces.
Note: Do not apply excessive amount of engine oil. Remove
the excess before assembling.
(2) Install the eye nut to stud bolt, and lift the cylinder head
assembly.
(3) Slowly lower the cylinder head, and install the cylinder
head aligning dowel pins with holes. Make sure that the
dowel pins are inserted in the holes, hand tighten the
cylinder head bolts.
Cylinder Head Assembly - Install
5.7 Cylinder Head Bolt - Tighten
Two methods of cylinder head bolt tightening, torque tight-
ening and angle controlled tightening, are available.
5.7.1 Torque Tightening Method
(1) Tighten the cylinder head bolts progressively to the
specified torque in the sequence shown in illustration.
(2) Tighten all the bolts, and then loosen them, and tighten
them again according to this torque method. (2-time
tightening method)
5.7.2 Angle Controlled Tightening Method
(1) Tighten the cylinder head bolts to the specified snug
torque in the sequence shown the illustration.
(2) Place the head bolt plate on the top of cylinder head.
(3) Put a mark to the cylinder head bolt.
(4) Tighten bolts by turning 65±3° in the specified
sequence.
(5) Loosen all bolts, and then angle controlled tighten them
again. (2-time tightening method)
Cylinder Head Bolts - Tightening Sequence
Cylinder Head Bolt - Angle Controlled Tightening
Method
Dowel pin
Eye nut
P/N:37591-02400
Application
of engine oil
１
ï¼’
３
ï¼”
５
ï¼–
Tightening torque of torque method:
539 ± 27 N·m {55 ± 2.75 kgf·m}
[398 ± 20 lbf·ft]
[Wet]
Snug torque of
angle method:
294 ± 14.7 N·m
{30 ± 1.5 kgf·m}
[217 ± 10.8 lbf·ft]
[Wet]
Application
of engine oil
Head bolt plate
P/N:37598-08900
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