8.ENGINE
8-58
RING/PISTON GR00VE CLEARANCE
To measure the ring end gap place the
ring in the cylinder in the area of
8mmto16mm (5/16in to 5/8in) from
top of cylinder.
NOTE: In order to correctly position
the ring in the cylinder, use piston as a
pusher.
Using a feeler gauge, check ring end
gap. Replace ring if gap exceeds
above described specified tolerance.
Installating the Ring
For installation, reverse the removal
procedure. Pay attention to the
following details.
NOTE: Use a ring expander to
prevent breakage during installation.
The oil ring must be installed by
hand.
NOTE: First install spring and then
rings of oil scraper ring.
Install the oil scraper ring first, then
the lower compression ring with the
word
“
N
”
and
“
TOP
”
facing up,
then the upper compression ring with
the word
“
N
”
and
“
TOP
”
facing
up.
1. Upper compression ring
2. Lower compression ring
3.Oil scraper ring
NOTICE Ensure that top and second
rings are not interchanged.
Check that rings rotate smoothly after
installation.
Space the piston ring end gaps120
°
apart and do not align the gaps with
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