Mazda 323 1988 Workshop Manual page 132

INSPECTION AND REPAIR 16
16.5
mm
(0.65
in)
5. If the upper part of the cylinder wail shows uneven
wear, remove the ridge using a ridge reamer.
Oil Jet
1. Check the oil jet for clogging.
Note
Make sure that the oil passages are not
clogged.
2. Check the check ball move smoothly.
Piston
1. Inspect the outer circumferences of all pistons for
seizure or scoring, replace if necessary.
2. Measure the outer diameter of each piston at
a
right
angle (90°) to the piston pin,
16.5 mm (0.650 in)
below
the oil ring land lower edge.
Piston diameter
mm (in)
L
Size
Diameter
1 77.954-77
974
1
(3.0690-3.0698)
0 50 (0.020)
' 78.454-78.474
O"eiSlze
/ (3.0887-3.0895)
3. Check the piston to cylinder clearance.
Clearance:
0.026-0.065
mm (O.OOtO-0.0026 in)
Maximum: 0.15 mm (0.0059 in)
4. If the clearance exceeds the maximum, replace the
piston or rebore the cylinder to oversize.
Note
If the piston is replaced, replace the piston
rings also.
1 B-45