Suzuki GP125 - Page 43

3-11
GEARS
AND
SHIFTING
FORKS
Upon
disassembling
the
engine,
immediately
inspect
the
transmission
internals,
visually
ex.
amining
the
gears
for
damage
and
checking
the
meshed
condition
of
gear
teeth.
Using
a
thick-
ness
gauge,
check
the
shifting
fork
clearance
in
the
groove
of
its
gear.
Thickness gauge |
09900-20804
|
b
This
clearance
for
each
of
the
three
shifting
forks
plays
an
important
role
in
the
smoothness
and
positiveness
of
shifting
action.
Each
fork
has
its
prongs
fitted
into
the
annular
groove
provid-
ed
in
its
gear.
In
operation,
there
is
sliding
contact
between
fork
and
gear
and,
when
a
shift
ing
action
is
injtiated,
the
fork
pushes
the
gear
axially.
Too
much
a
clearance
is,
therefore,
liable
to
cause
the
meshed
gears
to
slip
apart.
If
the
clearance
checked
is
noted
to
exceed
the
limit
specified,
replace
the
fork
or
its
gear,
or
both.
Shift
fork-groove
clearance
2
=
|
Service
limit
|
|
For
3rd
drive
gear
== —] 0.45 mm
|
Рогат
driven
gear
|
оар,
| For Sth driven gear
CLUTCH
Drive
plates
and
driven
plates
Clutch
plates
in
service
remain
in
oily
condition
as
if
they
were
lubricated
with
oil.
Because
of
this
condition,
both
drive
and
driven
plates
are
subject
to
little
wearing
action
and
therefore
last
much
longer.
Their
life
depends
largely
on
the
quality
of
oil
used
in
the
clutch
and
also
on
the
way
the
clutch
is
operated.
These
plates
are
expendable.
they
are
meant
to
be
replaced
when
found
worn
down
or
distorted
to
the
respective
limit:
use
a
caliper
to
check
thickness
and
a
thickness
gauge
and
surface
plate
to
check
distortion.
09900 20101
09900-20803
| Vernier caliper
| Thickness gauge
Drive plate thickness:
| Service limit 2.6 mm (0.10 in) ]
Drive plate claw width:
Г
Service
limit
11.3
mm
(0.44
in)
]