B1700·B2100·B2400 WSM, 11770
(4) Piston and Piston Rings
0087F012
---
-----------
1 ENGINE
The
piston
has
a slightly oval shape when cold (in
consideration
of
thermal expansion) and a concave
head.
Three rings are installed in grooves in the piston.
The
top
ring
(1)
is
a keystone type, which
can
stand
against heavy loads, and the barrel face on
the
ring
fits well
to
the cylinder wall.
The
second
ring
(2)
is
an
undercut
type,
which
effectively prevents the oil from being carried up.
The
oil ring
(3)
has
chamfered contact faces and
an
expander ring, which increase the pressure
of
the oil
ri
ng agai nst the
cyl
inder wall.
Several
grooves are cut on
the
topland
to
help
heat dissipate and
to
prevent scuffing.
0087F013
4
(1) Top Ring
(2) Second Ring
(3) Oil Ring
(4) Depression
(5) Valve
Recess
Connecting rod
(2)
is
used
to
connect the piston
with
the crankshaft.
The
big end
of
the connecting
rod
has
a crank pin bearing
(3)
(split type) and
the
small end
has
a small end bushing
(1)
(solid type).
(5) Connecting
Rod
B083F240
(1) Small
End
Bushing
(2) Connecting
Rod
1-M3
(3) Crank pin Bearing
To Next Page
Loading...
Need help?
General
