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CYLINDER/PISTON
Push the
nflfJ
infO
the bolfom
of the
cylmder
USing
rhe
P'StOft head to
be
sure the nng IS
squarely m the
cylinde~
9-6
Temporarily
install
the top ring to their proper posi-
tion
with
the mark facing
up.
Measure
the
piston ring-la-groove clearance with
t
he
ring
pushed
into
the groove.
SERVICE
LIMIT:
0.'15 mm (0.0045 in)
Inspect
the
piston
ring
grooves for wear or damage.
Measure
the diameter
of
the piston at 7.0 mm
(0.28
in)
from the
bo«om
and 90
degrees
to the piston pin
hole.
SERVICE
LIMIT:
77.940 mm (3.0685 in)
If the 0.0. is under the service limit or nearly 15.0
hours of running time have elapsed, replace the
pis-
ton
with
a new
one.
Calculate the piston-la-cylinder
clearance.
SERVICE
LIMIT:
0.085 mm (0.0033 in)
Measure
the piston pin
bore
1.
0
.
SERVICE
LIMIT:
16.03 mm
(0.631 in)
Check the piston pin for wear and excessive discol
·
oration
.
Measure the piston pin
0 .0.
SERVICE
LIMIT:
15.98
mm
(0.629 in)
If
the
0.0.
is under the service
limit,
discolored, or
nearly
15.0
hours of
running time have
elapsed,
replace
the piston
pin.
Calculate the pisten pin-Ie-piston clearance.
SERVICE
LIMIT:
0.04 mm (0.002 in)
Insert each piston ring into the cylinder and
mea·
sure
the
ring
end
gap.
SERVICE
LIMITS:
Tep:
'04
-
'06:
After
'
06:
Oil
(side
rail)
:
0.44 mm (0.017 in)
0.39 mm (0.015
in)
0.90 mm (0.035 in)
7.0mm
(0.28 in)
1
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Table of Contents
Troubleshooting
