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SECTION 10
INSPECTION AND RECONDITIONING
Figure 10-13. Measuring Piston Ring End Cap.
4. After installing the new compression (top and
middle) rings on piston, check piston-to-ring side
Clearance.
Maximum recommended side clear-
ance is .006".
If side clearance is greater than
.006", a new piston must be used.
Refer to
Figure 10-14.
Figure 10-14.
Measuring Piston Ring Side Clearance.
Install Piston Rings
To install piston rings, proceed as follows:
NOTE:
Rings must be installed correctly. Ring instal-
lation instructions are usually inctuded with
new ring sets. Follow instructions carefully.
Use a piston ring expander to install rings.
Install the bottom (oil control) ring first and the
top compression ring last. Refer to
Figure 10-15.
10.12
Oil Control Ring
(Three-piece)
Piston Ring
Dykem
Siripe
Piston
Expander
Figure 10-15.
Piston Ring Installation.
. Oil Control Ring (Bottom Groove): Install the ex-
pander and then the rails. Make sure the ends of
expander are not overlapped.
. Compression Ring (Center Groove):
Install the
beveled ring using a piston ring installation tool.
Make sure the "pip" mark is up and the PINK dy-
kem stripe is to the left of end gap.
. Compression Ring (Top Groove): install the top
ting using a piston ring installation tool. Make
sure the "pip" mark is up and the BLUE dykem
stripe is to the left of end gap.
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