Mazda 626 1981 - 01-11

11
Fig.
1-
38
y
y
fig.
1-
39
J :
11
1-C-13.
Checking Cylinder Bore
Check
the cylinder bores for wear, scratching and
waviness.
Measure the diameter
of
the
cylinder bore
by
using
a cylinder gauge.
This
measurement should
be
taken
in
the
X-X
direc-
tion and the
Y-Y
direction
at
each
of
the
3 sections,
upper
, middle and lower,
of
one
cylinder, as shown
in Fig. I
39
.
The difference
between
the
minimum and maximum
values
out
of
the
6 measured values is regarded as
the
amount
of
wear.
If
the
wear
of
cylinder
bore
is
0.15
mm
(0.0059
in)
or
more,
it should be honed
or
rebored.
Honing and reboring should
be
made
to
correspond
to
piston
and rings oversize and
to
the
recommended
piston
clearance
of
0.
036
-
0.075
mm
(0.0014
-
0.0030
in).
The following oversize piston and rings are available:
0.25
mm
(0.010
in) 0.50
mm
(0.020
in)
Note :
If
any
one
of
the
cylinder
bores requires reboring
,
the
remaining ones
also
re
qu
ire reboring.