BF15DSBF20D
4.
CYLINDER HEAD ASSEMBLY
1) Clean the cylinder head with a solvent and blow through
2)
Install a new O-ring onto the thermo sensor.
3)
Apply liquid sealant (Three bond #1201, #1215 or equiva-
lent)
to
the thread of the thermo sensor. Then install the
thermo sensor and tighten it
to
the specified torque.
TORQUE:
18
N*m
(1.8
kgf*m,
13
Ibfoft)
al oil passages with compressed air.
4)
Install a new oil seal, then apply grease
to
the lip of the
oil seal.
5)
Install the valve spring seats and new stem seals.
6)
Lubricate the valve stem with molybudenum oil solution
and insert the valve into the valve guide by turning the
valve slowly
to
prevent damage
to
the stem seal.
7)
Install the valve springs with the narrow pitch side facing
down as shown and install the valve spring retainers.
8)
Install the valve cotters using the valve spring compres-
sor taking care not
to
damage the cylinder head.
Do
not interchange the intake and exhaust valves.
Do
not compress the valve spring more than necessary
to
prevent
loss
of tension.
[3]
Paint
Mark
VALVE SPRING
RETAINER
OIL SOLUTION
10-1
6
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