Toyota B - Inspect Piston Diameter and Oil Clearance

ENGINE MECHANICAL
-
Cylinder Block
EM-79
i
i
ND
i,
tisntty
ling
rod.
'ods
and
from the
clean
the
I
rlean the
Mark
"1"
Mark"2"
Mark
"3"
o./s o.50
o/s
o.75
o,/s 1.oo
38 STD
Mark
"1"
Mark"2"
Mark
"3"
o,/s
0.50
o/s
o.75
o,/s 1.oo
118
STD
Mark
"1"
Mark"2"
Mark
"3"
o./s 0.50
o,/s o.75
o,/s
1.oo
14t3
STD
Mark
"1"
Mark"2"
Mark
"3"
o,/s
0.50
o/s o.75
o./s
1.oo
2. INSPECT PISTON DIAMETER
AND
OIL CLEARANCE
(a)
Using a micrometer, measure
the
piston
diameter
at a
right
angle to the
piston pin
hole center line,
the
indicated
distance from
the
piston
head.
Distance: B 49.20
mm
(1.937O
in.)
38 45.20 mm
(1.7795
in.)
118
38.33 mm
(1.5091
in.)
148 42.83
mm
(1.6862
in.)
HINT: There
are three sizes of the
standard
piston
diameter, marked
"1", "2",
and
"3",
accordingly. The
marked is
stamped on the top of the
piston.
Piston
diameter:
B STD
94.845
-94.855
mm
(3.7370
-3.7374in.|
94.855
-94.865
mm
(3.7374
-3.7378
in.)
94.865
-94.875
mm
(3.7378
-3.7382
in.)
95.345
-
95.375 mm
(3.7537
-
3.7549 in.)
95.595
-95.625
mm
(3.7636
-3.7648
in.)
95.845
-95.875
mm
(3.7734
-3.7746in.1
101.8OO
-
101.81O
mm
(4.0079
-4.0083
in.)
101.810
-
101.820
mm
(4.OO83
-4.OO87
in.)
101.82O
-
101.83O
mm
(4.OO87
-4.OO9O
in.)
1O2.3OO
-
102.330
mm
(4.0276
-4.O287ln.l
102.55O
-
102.580
mm
(4.0374
-4.O386
in.)
1O2.8OO
-
102.830
mm(4.0472
-4.0484
in.)
94.690
-94.7OO
mm
(3.7374
-3.7378
in.)
94.7OO
-94.710
mm
(3.7378
-3.7382
in.)
94.710
-94.720
mm
(3.7382
-
3.7386 in.)
95.190
-95.22O
mm
(3.7476
-3.7488
in.)
95.440
-
95.470 mm
(3.7575
-
3.7587 in.)
95.690
-95.720
mm
(3.7673
-3.7685
in.)
101.760
-1O1.77O
mm
(4.O063
-4.OO67
in.)
1O1.77O
-
101 .78O
mm
(4.0067
-
4.OO71
in.)
101.780
-
101.79O
mm
(4.O071
-4.OO75
in.)
1
02.260
-
1O2.29O
mm
(4.O260
-
4.0272 in.l
1O2.51O
-1O2.54O
mm
(4.O358
-4.0370
in.)
102.760
-
1O2.79O
mm
(4.0457
-
4.0468
in.)
B
and 38
-
Front
Front Mark
Piston
Size Mark
,2or
3)
11B and 148
-
Front
Piston Size Mark
,2
or 3l
Front Mark
EM6007
EM6008
tt
tr