Toyota 3b Repair Manual page 46

ENGINE MECHANICAL
-
EM0963
EMO964
(b)
Using
a
micrometer, measure
the
diameter
of
the
valve stem.
Stem diameter:
lntake
8.968
-
8.984 mm
(0'3531
-
0.3537 in')
Exhaust 8'954
-
8.970 mm
(0.3525
-
0.3531 in')
(c)Subtractthevalvestemdiametermeasurementfrom
the
valve guide bushing inside diameter measure-
ment.
Standard oil clearance:
lntake
0.026
-
0.O62 mm
(O.OO1O
-
O.OO24
in.)
Exhaust
O.O4O -
0'076 mm
{O.OO16
- O.OO3O
in')
Maximum oilclearance:
tntake
0.10 mm (0'0039 in.l
Exhaust
0.12 mm (0.0047
in.)
lftheclearanceisgreaterthanmaximum,replacethe
valve and guide bushing.
10.
IF NECESSARY, REPLACE VALVE GUIDE BUSHING
(a)
Using SST and
a
hammer,
tap out the valve
guide
bushing.
ssr
09201 -6001
1
(b)
Using
a
caliper gauge, measure
the
bushing
bore
diameter of
the cYlinder
head.
lf the bushing bore diameter of cylinder head is more than
14.018 mm
(O.SS1
9 in'), replace the cylinder head'
(c)
Using SST
and a hammer, drive in a new valve guide
OusnTng
to
where there
is
19.2
-
19'8 mm
t0'756
-
0.78b in.)
or 18'8
-
19.4 mm
(O'74O
-
0'764 in')
protruding from the cylinder
head.
ssr
09201-6001
1
B and
38
19.2
-
19.8 mm
SST
EM6134 EM6075