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Adjustment Procedures
1. Lower shaft backlash
1) Loosen 2 setscrews
2) Turn the lower shaft rear metal
the backlash, keeping the metal to contact closely with Face A.
Size of backlash is 0.1mm at the tip of the driver
required to rotate smoothly.
3) Tighten the 2 setscrews
4) Tighten the 2 setscrews
(Caution) When eliminate the backlash, the direction of rotation
should always be kept in the direction of the arrow.
2. Lower shaft connection/disconnection
1) Loosen the 2 setscrews
2) The lower shaft
of the arrow.
3) When mounting the lower shaft
metal
and the lower shaft gear
to the flat section
mately in the center. Tighten the remaining setscrew
* Connection and disconnection of the lower shaft
the above-mentioned backlash has been relieved in advance. In this
case, backlash adjustment must be done after the lower shaft
been installed.
Adjustment Procedures
1. Loosen the 2 setscrews
shaft gear
.
(Caution) 1. If the lower shaft gear
the oscillator
case, refer to [(13) Lower shaft backlash adjustment
and connection/disconnection] and provide a suffi-
cient backlash.
2. The 3 setscrews
case, the second screw of the setscrews
Then, the first one can be loosened.
3. Lightly swing the whole body of the oscillator
direction of the arrow. Decide the positioning of the oscillator
that it stays in the center of swinging.
4. Loosen the 3 setscrews
is not displaced from the center of swinging.
(Tighten the first screw first so that it comes in contact flatly with the
oscillator shaft
. Then, tighten the second one.)
5. Make backlash adjustment for the lower shaft gear
[(13) Lower shaft backlash adjustment and connection/ disconnec-
tion].
(Cautions) 1. In the case of disassembly and adjustment, grease-
up treatment is always needed for the specified
places (2 positions) and the gear area A of the oscil-
lator
.
2. When the crank rod (under-cam) is removed, actions
for under-cam positioning must be taken, without fail.
Refer to [(6) Crank rod connection/ disconnection].
and 2 setscrews
in the direction of the arrow and adjust
.
.
.
can be taken out if it is pulled in the direction
, insert it in the lower shaft rear
. Apply 1 of the setscrews
of the lower shaft
and increase the backlash of the lower
has insufficient backlash,
does not swing correctly. In such a
should have been loosened in advance. In this
and then fix them so that the oscillator
.
. The shaft is
C
and tighten it approxi-
.
become easy if
has
should be loosened first.
with a finger in the
so
, according to
– 25 –
Results of Improper Adjustment
o If the backlash is excessive, the
hook noise will be increased.
o If backlash is too small, the lower
shaft gear
or the oscillator
will give rise to frictional wear. In
addition, this can be a cause of
crank rod lock-up.
o If the front or rear position of the
lower shaft rear metal
placed at the time of backlash
adjustment, this can also be a
cause of the lock-up of oscillator
or the crank rod.
Results of Improper Adjustment
o If the position for fixing the
oscillator
is inadequate, this
can also be a cause of the
frictional wear or lock-up of the
oscillator pin, crank rod lid, under-
cam, and the crank rod.
is dis-
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