9
Fig.3-2 Fig.3-3
C. Tightening and removing cylinder head bolts.
The tightening order for cylinder head bolts is shown in fig.3-3.tighten bolts uniformly in three
steps. Unfasten are remove bolts in reverse order.
IGHTENING TORQUE
requirement NO.1
～
NO.6 Bolts
NO.7Bolt
68.6
～
73.3N·m(Cold)
（
7
～
7.5kgf·m
）
Tightening torque
75.8
～
83.4N·m(Hot)(8
～
8.5kgf·m)
4.9
～
6.86N·m
(0.5
～
0.7kgf.m)
3.2 CYLINDERBLOCK ASSEMBLY AND BALANCE CHAIN
Cylinder block is made of alloy cast iron, which has high strength and is wear-resistant .In
order to make operation of engine stable and to reduce vibration. Advanced balancing mechanism
is adopted .The balancing mechanism consists of counter weights and balancing. Shaft which are
ocated on two sides of crankshaft respectively .balancing shaft is driven by a chain.
On top surface of the cylinder block marked with cylinder matching group number. at bottom
marked with main bearing hole matching group number refer to fig.3-4 3-5
Fig.3-4 Fig.3-5