Toyota 14b - Inspection of Timing Gears and Camshaft

ENGINE
MECHANICAL
-
Timing
Gears
and Camshaft
EM-57
[e
to the
t
I
I
rng
gear
iamshaft
INSPECTION OF
TIMING
GEARS
AND
CAMSHAFT
1. INSPECT CAMSHAFT
(a)
Place
the
camshaft on
V-blocks and, using
a dial
indicator,
measure the circle
runout at the
center
journal.
Maximum circle
runout: O.O6
mm
(O.OO24
in.)
lf
the
circle
runout is
greater
than
maximum, replace the
camshaft.
(b)
Using
a
micrometer,
measure
the
cam lobe height.
Standard
cam
lobe height:
lntake
B,
38
118,148
Exhaust
B,38
118,148
Minimum
cam
lobe
height:
lntake B, 38
118,148
Exhaust B,38
118,148
lf
the
lobe height
is less
camshaft.
(c)
Using
a micrometer,
measure the
journal
diameter.
Journal
diameter
(from
front
side):
No. 1
53.459
-
53.475
mm
12.1047
-
2.1O53
in.)
No. 2
53.209
-
53.225
mm
(2.0948
-
2.O955 in.)
No.3 52.959
-
52.975
mm
(2.O85O
-
2.O856 in.)
No.
4
52.709
-
52.725 mm
(2.0752
-
2.0758
in.)
No. 5 52.459
-
52.475
mm
(2.0653
-
2.O659 in.)
lf the
journal
diameter is
not within
specification, check
the
oil
clearance.
(See page
EM-88)
(d)
Using
a feeler
gauge,
measure the thrust clearance
between
the camshaft and thrust
plate.
Standard clearance: 0.06
-
O.13
mm
(O.OO24
-
O.OO51
in.)
Maximum
clearance:
O.3O
mm
(0.O118
in.)
lf
the
thrust clearance
is
greater
than maximum,
replace
the thrust
plate.
lf necessary, replace the camshaft.
(See
page
EM-59)
45.288
-
45,378 mm
(1.7830
-
1.7865 in.)
44.879
-
44.969 mm
(1.7669
-
1.7704in.|
45.261- 45.351
mm
{.1.7819
-
1.7855 in.)
45.O5O
-
45.140 mm
(1.7736
-
1.7772in.|
44.85 mm
(1.7657
in.)
44.44 mm
(1.7496
in.)
44.83 mm
(1.7650
in.)
44.62 mm
(1.7567
in.)
than
minimum, replace the