ENGINE MECHANICAL
-
Cylinder Block
EM-47
Piston diameter:
2L-T STD mark
"1" 91.940
-
91.950
mm
(3.6197
-
3.6201
in.)
STD mark
"2" 91.950
-
91.960
mm
(3.6201
-
3.6205
in.)
STD mark
"3" 91.960
-
91.970
mm
(3.6205
-
3.6209
in.)
01s
0.50
92.440
-
92.470
mm
(3.6394
-
3.6405
in.)
Piston diameter:
3L
STD mark
"1" 95.940
-
95.950
mm
(3.7772
-
3.7776
in.)
STD mark
"2"
95.950
-
95.960
mm
(3.7776
-
3.7779
in.)
STD mark
"3" 95.960
-
95.970
mm
(3.7779
-
3.7783
in.)
01s
0.50
96.440
-
96.470
mm
(3.7968
-
3.7980
in.)
(b)
Measure the cylinder bore diameter in the thrust
directions. (See page EM-46)
(c)
Subtract the piston diameter measurement from the
cylinder bore diameter measurement.
Front
Mark
1,201-3
EM5482
EM568C
Standard oil clearance:
0.050
-
0.070
mm
(0.0020
-
0.0028
in.)
Maximum oil clearance:
0.14
mm
(0.0055
in.)
If the oil clearance
is
greater than maximum, replace
all
four pistons and rebore
all
four cylinders. If necessary,
replace the cylinder block.
HINT (Use cylinder block subassembly):
When installing
a
standard piston, install one with the same number mark
as
the standard bore diameter mark on the cylinder block.
INSPECT CLEARANCE BETWEEN WALL OF RING
GROOVE AND NEW PISTON RING
(No.
1
Ring)
Install
a
No.
1
piston ring to the piston. Using
a
feeler
gauge, measure the clearance between the piston ring and
wall of the piston ring groove.
Standard ring groove clearance:
No.
1
0.028
-
0.077
mm
(0.001 1
-
0.0030
in.)
Maximum ring groove clearance:
0.20
mm
(0.008
in.)
If the clearance
is
greater than maximum, replace the
piston.
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