Subaru Legacy 2002 Service Manual page 1091

Mechanical
CAUTION:
Measurement should be performed at a tem-
perature 20°C (68°F).
NOTE:
Standard sized pistons are classified into two
grades, "A" and "B". These grades should be used
as a guide line in selecting a standard piston.
Standard diameter:
A: 89.205 — 89.215 mm (3.5120 — 3.5124
in)
B: 89.195 — 89.205 mm (3.5116 — 3.5120
in)
(A) Main journal size mark
(B) Cylinder bore size mark
(C) Cylinder block RH-LH combination mark
2) How to measure the inner diameter of each
cylinder
Measure the inner diameter of each cylinder in
both the thrust and piston pin directions at the
heights shown in the figure, using a cylinder bore
gauge.
CAUTION:
Measurement should be performed at a tem-
perature 20°C (68°F).
CYLINDER BLOCK
Taper:
Limit
0.050 mm (0.0020 in)
Out-of-roundness:
Limit
0.050 mm (0.0020 in)
(A)
(B)
3) When piston is to be replaced due to general or
cylinder wear, determine a suitable sized piston by
measuring the piston clearance.
B2M4105C
ME(H6)-70
Thrust direction
Piston pin direction
B2M4106A