Chapter 7 Reduction and
Reversing
Gear
_2._S_h_i_ft_in..,:;g,;....D_e_v1_·c_e
__________________________
3.4JH3(B)(C)E
2-2
Forward and reverse clutch operation
(Neutral
⇒
Forward; Neutral
⇒
Reverse)
When the shift lever
is
moved to the forward position
from the neutral position, the shift lever shaft starts to
revolve, and the location pin disengages from the
neutral V•groove position
of
the side cover. (Shift lever
moves approx. 0.5mm to the drive cone side.)
At
this
time the shifter, which
is
set
on
the eccentric hole of the
shift lever shaft, moves the drive cone's V·groove to the
forward large gear.
When the location pin
of
the shift lever shaft falls
in
the
forward position groove of the side cover, (the shift lever
shaft moves lo the shift lever side approx. 3mm), and the
shifter stars to press the drive cone V-groove
to
the for·
ward large gear side through the spring force.
2-3
Engagement and disengagement of clutch
(Forward
⇒
Neutral;
Reverse
⇒
Neutral)
When the shift lever
·1s
moved to the forward
posif1on
from the neutral position, the shift lever shaft starts to
revolve, and the location
pin
disengages from the for-
ward position groove of the side cover. (The shift lever
shaft moves approx.
3mm
to
the
drive cone side.)
At
this time, the shifter which
is
set
on
the eccentric hole
of
the
shift
lever
shaft
is
moved
to
the
neutral
side
(reverse large gear side). The drive cone, however, is
engaged with the forward large gear through the torque
force produced by the revolving centrifugal force.
Further, when the shift lever shaft starts
to
revolve, and
the positioning pin falls
in
to
the neutral V-groove position
of the side cover (the shift lever shaft travels approx.
5mm to the shift lever side), the shifter moves to the shift
lever side(to the spring side) while moving the V-groove
of
the drive cone to
the
reverse large gear side. The
movement of the shifter to the shift lever side,
how13v-
er,
is
stopped when the shifter end contacts the stop-
per bolt. The shifter only works to press the V-groove
of the drive cone to the reverse large gear side. Thus,
the drive cone
is
disengaged from the forward large
gear. After this disengagement, the transmission torque
of the drive cone
is
decreased
to
zero and the shift lever
is returned to the neutral position
by
the spring force.
7-36
Shifter
center
(Cone
center)
Forward
Side
_p
/r
Reverse
/ I
side
(Shift lever
~----'-'-'-I
Side cover
shaft
moves
approx.
0.5mm)
neutral position
(V-groove)
Shifter
center
7
(Shift
lever
shaft
Reverse
moves
approx.
3mm)
side
At
forward engagement position
/-
(Shift
lever
shaft
Forward
Side
Cone
center
Reverse
side
moves
approx.
3mm)
L._...
____
L..LLJ
Shifter
center
Cone
centar
Shift
lever
shaft
Forward
Side
Reverse
side
~
Ii
Side cover
(Shift
laver
~-----'--'--'-I
shaft
moves
approx.
0.5mm
neutral position (V-groove}
Printed in Japan
HINSHI-HS009
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