Service manual
Table Of Contents
Pistons and piston rings
(1) Pistons
Inspect each piston for any abnormal wear
of
its
sliding surface, for cracks at the crown and for
evidence
of
melting or fusion. Examine the ring
grooves for stepped wear and sloped wear. Replace
pistons found in bad condition.
(2) Measure the outside diameter
of
piston in two direc-
tions perpendicular to each other.
If
the diameter
exceeds the service limit, replace the piston.
Specifications
Unit:
mm
(in.)
Item
Standard
Service
limit
Standard
83.90 (3.3031)
0.25 (0.0098)
84.15 (3.3130)
Diameter
oversize
-0.2
(at
skirt)
0.50 (0.0197)
84.40
(3.3228)
(-0.008)
oversize
0.75 (0.0295)
84.65 (3.3327)
oversize
-22-