Mazda 626 1989 Workshop Manual page 20

1B
INSPECTION AND REPAIR
4. Measure the cylinder bore in directions X and Y
at three levels in each cylinder as shown.
Cylinder bore
79G01C-070
(1) If the difference between the measurement A
Taper: 0.019 mm (0.0007 in) max.
I I'1 .:'
I f v ?/'.' V
■
I ■ ■
79G01C-071
(2) If the difference between the measurement X
Out*of-round: 0.019 mm (0.0007 in) max.
Caution
The boring size should be based on the size
of an oversize piston and be the same for all
cylinders.
5. If the upper part of the cylinder wall shows uneven
wear, remove the ridge with a ridge reamer.
86U01X-102
Size
86.000—86.019 (3.3858-3.3866)
Standard
0.25 (0.010) oversize 86.250— 86.269 (3.3957—3.3964)
0.50 (0.020) oversize 86.500—86.519 (3.4055-3.4062)
and C exceeds the maximum taper, rebore the
cylinder to oversize.
and Y exceeds the maximum out-of-round, re­
bore the cylinder to oversize.
mm (in)
Bore