Toyota B User Manual

ENGINE
MECHANICAL
_
@
Thrust
Direction
@
Axial
Direction
10
mm
(O.39
in.)
Middle
10 mm
(0.39
in.)
EMO365
(b)
Measure
the
cylinder
bore
diameter
in thrust
direc-
tions
(See
page
EM-75)
and
subtract
the
piston
diameter
measurement
from
the
cylinder
bore
dia-
meter
measurement.
Standard
Piston
oil
clearance:
B
O.145
-
O.165
mm
(O.OO57
-
O.0O65
in.)
38
0.19
-
0.21
mm
(o.OO75
-
O.OO83
in.)
118
O.3O
-
O.32
mm
(0.01
18
-
0.O126
in.)
148
O.23
-
O.25
mm
(O.OO91
-
O.OO98
in.)
Maximum
piston
oil
clearance:
B O.22
mm
(O.OO87
in.)
38
0.26
mm
(O.O1O2
in.)
118 O.37
mm
(O.0146
in.)
148 O.3O
mm
(O.O118
in.)
lf
the
greater
than
maximum,
replace
all
four
pistons'
lf
necessary,
rebore
or
replace
the
cylinder
block.
HINT:
(Use
cylinder
block
sub-assembly)
When
installing
a
standard
piston,
install
one
with the
same
mark
as the
standard
bore
diameter
mark
on
the
cylinder
block.
INSPECT
CLEARANCE
BETWEEN
WALL
OF
PISTON
RING
GROOVE
AND
NEW
PISTON
RING
(a)
lnstall
a
new
No.
1
ring
to
the
piston
and,
using
a
thickness
gauge,
measure
the
No.
1
ring
clearance
between
the
new
piston
ring and
the
ring
land
when
the
ring
is
flush
with
the
piston
surface'
No.
1 ring
groove
clearance:
B
O.O59
-
0.089
mm
(o.OO23
-
O.Oo35
in.)
38
0.061
-
O.091
mm
(O.OO24
-
O.OO36
in.)
11B and
148
0.062
-
O.O92
mm
(O.OO24
-
0.O036
in.)
(b)
Using
a thickness
gauge,
measure
the
No'
2
ring or
oil
ring
clearance
between
the
new
piston
ring
and
the
ring
land.
No.
2 ring
groove
clearance:
O.O5
-
O.O9
mm
(O.OO2O
-
O.OO35
in.)
38.
118,
148
O.O4
-
O.O8
mm
(O.oO16
-
O.OO31
in')
Oil
ring
groove
clearance:
O.O3
-
O.O7
mm
(O.OO12
-
O.OO28
in')
lf the
clearance
is
greater
than
the
maximum,
replace
the
piston.
3.

Toyota B Specifications

General

Brand	Toyota
Model	B
Category	Engine
Language	English