Adjusting The Amount Of Oil (Oil Splashes) In The Hook - JUKI DDL-8100e Instruction Manual

7. aDJustInG tHE aMount oF oIL (oIL sPLasHEs) In tHE HooK

WarnInG :
Be extremely careful about the operation of the machine since the amount of oil has to be checked
by turning the hook at a high speed.
1 Amount of oil (oil splashes) confirmation paper
approx. 70 mm
* use any paper available regardless of the material.
When carrying out the procedure described below in 2, remove the slide plate and take extreme cau-
*
tion not to allow your fingers to come in contact with the hook.
1) If the machine has not been sufficiently warmed up for operation, make the machine run idle for ap-
proximately three minutes. (Moderate intermittent operation)
2) Place the amount of oil (oil splashes) confirmation paper under the hook while the sewing machine is
n operaton.
3) Confirm the height of the oil surface in the oil reservoir is within the range between "HIGH" and "LOW".
4) Confirmation of the amount of oil should be completed in five seconds. (Check the period of time with
a watch.)
■ sample showing the appropriate amount of oil
splashes of oil from the hook
approx.1 mm
appropriate amount of oil
(small)
splashes of oil from the hook
approx.2 mm
appropriate amount of oil
(large)
（DDL-8100eH : 1 mm）
（DDL-8100eH : 3 mm）
– 5 –
2 Position to confirm the amount of oil (oil splashes)
Hook driving shaft front bushing
Hook
oil splashes
confirmation paper
* Place the amount of oil (oil splashes) confirmation
paper under the hook.
) The amount of ol shown n the samples on the
left should be finely adjusted in accordance with
sewing processes. Be careful not to excessively
increase/decrease the amount of oil in the hook.
(If the amount of ol s too small, the hook wll be
sezed (the hook wll be hot). If the amount of ol
s too much, the sewng product may be staned
wth ol.)
2) Adjust the amount of ol n the hook so that the
ol amount (ol splashes) should not change whle
checkng the ol amount three tmes (on the three
sheets of paper).
Bed
c l o s e l y f i t t h e
p a p e r a g a i n s t
the wall surface
of the bed.