3-34
ENGINE
CAM
WEAR
Worn-down
cams are often the cause
of
mistimed valve opera-
tion
resulting in reduced power output.
Measure
the cam height
©
using the micrometer.
If
the cams
are worn to the service
limit,
replace the camshaft
with
new
a
one.
09900-20202: Micrometer (25-50 mm)
BCam height©
Service
Limit:
IN: 33.150 mm
(1.3051
in)
EX:
33.220 mm (1.3079 in)
CAMSHAFT
JOURNAL
WEAR
Measure
the oil clearance,
with
the camshaft installed, using
the
plastigauge.
09900-22301: Plastigauge
09900-22302: Plastigauge
ESS)
Camshaft
journal oil
clearance
(IN & EX)
Service
Limit: 0.150 mm (0.0059 in)
Tighten the cylinder head cover bolts evenly and diagonally to
the
specified torque.
NOTE:
Make
sure
the
gasket
surface
of the cylinder
head
and cylinder
head
cover
are
clean
and
free
of any bond or other material.
H Cylinder head cover bolt: 10 N-m (1.0 kgf-m, 7.0
Ib-ft)
NOTE:
Do
not rotate the camshaft with the plastigauge in
place.
Remove
the cylinder head cover and read the
width
of the com-
pressed plastigauge
with
the envelope scale. This measure-
ment should
be
taken
at
the widest part
of
the compressed
plastigauge.
If
the camshaft journal oil clearance exceeds the service
limit,
measure the outside diameter of the camshaft journal. Replace
the
camshaft
or
the cylinder head
and
cylinder head cover
depending
upon
which one exceeds the specification.
IT55L1
09900-20205: Micrometer (0-25 mm)
(Camshaft
journal O.D. (IN & EX)
Standard
(o22): 21.959-21.980 mm (0.8645-0.8654 in)
(017.5): 17.466-17.484 mm (0.6876-0.6883 in)
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