JUKI MO-6800S Series Engineer's Manual page 45

Adjustment procedures
1) Orientation of the lubricating pin
When upper looper lubricating pin ❶ is set with oil inlet A faced
upward, lubricating hole B is in the lower section as observed
from this side. Take care not to mistake the orientation of oil inlet
A.
2) Setting the lubricating pin
Remove the oil reservoir, loosen the setscrew and adjust the
clearance provided between upper looper lubricating pin ❶ and
upper looper holder pin ❷ to 0.6 to 0.7 mm using a thickness
gauge or the like.
(Caution) When assembling the upper looper holder pin ❷ ,
the unbent part of the oil wicks ❸ in the upper loop-
er holder pin ❷ should face to the side of the upper
looper lubricating pin ❶ .
In addition, the oil wicks ❸ should not be hubbly to
the end face B of the upper looper holder pin ❷ .
* Refer to "4-(4) Positioning the upper looper holder" for the upper
looper holder pin.
Results of Improper adjustment
If the oil inlet A does not face
o
upward, oil will not be fed result-
ing in seizure.
If the clearance provided be-
o
tween the upper looper lubri-
cating pin and the upper looper
bracket is too small, the related
components will come in contact
with each other.
If the clearance provided be-
o
tween the upper looper lubri-
cating pin and the upper looper
bracket is too large, oil will not
be fed resulting in seizure.
The assembly in the opposite di-
o
rection of the oil wicks ❸ causes
seizure.
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