Toyota B User Manual

ENGINE
MECHANICAL
-
Cylinder Head
EM-41
lip
with
a
ninimum
ve
seats.
,
lead)
to
lhe
valve
g:
valve is
le
of the
ace, use
use 650
!
t
I
I
I
Squareness
(d)
Hand-lap
the valve
and valve
seat
with
an
abrasive
compound.
(e)
After hand-lapping,
clean
the valve
and valve
seat.
13.
INSPECT
VALVE
SPRINGS
(a)
Using a
steel square,
check
the
squareness
of the
valve
spring.
Maximum
squareness:
2.O
mm
(0.079
in.)
lf
squareness
is
greater
than maximum,
replace
the valve
spring.
(b)
Using calipers, measure
the free length
of the valve
spnng.
Free
length:
lnner
spring
Outer spring
lf
the free length
spring.
(c)
Using
a spring
tester, measure
the
tension
of
the
valve
spring
at the
specified installed
length.
lnstalled
tension:
lnner
spring
13.8
kg(30.4ab,
135N)
at 38.19 mm(1 .5O35in.)
Outer
spring
28.3 kg(62.4|b,
278N)
at
41.69
mm(1.6413in.)
lf
the install
tension is
not
as specified, replace
the valve
spring.
45.28
mm
(1
.7827
tn.l
50.73 mm
(1.9973
in.)
is
not
as specified,
replace
the valve
ieat, the
{ace
the

Toyota B Specifications

General

Brand	Toyota
Model	B
Category	Engine
Language	English