Volvo Penta 230 Workshop Manual page 70

Assembly
167. Check to make sure that the number 1 piston is
at T.D.C., with the pulley at 0°.
168. Check that the block and cylinder head contact
surfaces are properly cleaned. Install a new cylinder
head gasket and then install the cylinder head.
Check to make sure that the gasket between the
cylinder head and the water circulation pump is not
damaged and correctly positioned.
169. Install the cylinder head bolts in the cylinder head.
NOTE! The 3 short ones are to be positioned on the
port side and between the front and rearmost bolts.
They are marked 'white' in the illustration.
170. The cylinder head bolts must be replaced in
case they show signs of elongation. Whether a bolt
is elongated or not can be seen on the waist of the
bolt. If the waist is elongated, then the bolt has to be
replaced by a new one. The bolts can be re-used 5
times at the most. If uncertain, replace all bolts.
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171. Tighten the bolts in sequence and in steps. See
the illustration. Tool width: 14 mm.
1 = 20 Nm (2.0 kpm/15 ft.lbs)
2 = 40 Nm (4.0 kpm/30 ft.lbs)
3 = angle tightening through 120°.
172. Place the O-rings in their positions on the cylin-
der head.
NOTE! On engines of earlier make, there are no O-
rings.
Sealant for the camshaft carrier
173A. Use trichloroethylene or an alkaline degreas-
ing agent to clean the components carefully. Follow
the instructions for the cleaning agent carefully.
Coat the contact surface of the camshaft mechan-
ism with a thin layer of sealant (approx 0.05–0.10
mm 0.00197–0.00394"). Use 'Loctite 518' or its
equivalent.
NOTE! Use a short fiber type of roller or a brush to
apply the sealant.
IMPORTANT! Make sure that no sealant en-
ters the oil channels (1) or the drain channel
(2).