CYLINDER/PISTON
11-8
INSPECTION
Inspect the piston rings for movement by rotating the
rings. The rings should
be
able
to
move
in
their grooves
without catching.
Push the ring until the outer surface
of
the piston ring
is
nearly flush with the piston and measure the ring-to-
groove clearance.
SERVICE LIMITS: Top/Second: 0.08
mm
(0.003 in)
Insert each piston ring into the bottom of the cylinder
squarely using the piston.
Measure the ring end gap.
STANDARD:
Top: 0.10 - 0.25
mm
(0.004-
0.0010 in)
Second: 0.38 - 0.52
mm
(0.015 - 0.0020 in)
Check the piston outer surface for scratches or
damage.
Measure the piston
pin
hole. Take the maximum
reading to determine
1.0.
SERVICE LIMIT: 14.04
mm
(0.553 in)
Measure the piston
pin
0.0.
at piston and connecting
rod
sliding areas.
SERVICE LIMIT: 13.96
mm
(0.550 in)
Calculate the piston-to-piston
pin
clearance.
SERVICE LIMIT: 0.02
mm
(0.001 in)
Measure the piston
0.0.
at the point
6.5
mm
(0.26
in)
from the bottom
and
90°
to
the piston pin hole.
STANDARD:
57.970-57.990
mm
(2.2822-2.2831
in)
Calculate the cylinder-to-piston clearance (cylinder
1.0.:
page 11-6).
SERVICE LIMIT: 0.09
mm
(0.004 in)
Measure the connecting
rod
small end
1.0.
SERVICE LIMIT: 14.06
mm
(0.554)
Calculate the connecting rod-to-piston
pin
clearance.
SERVICE LIMIT: 0.05
mm
(0.002 in)
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