Preparation Of The Sewing Machine; Method Of Lubrication - JUKI LH-3528 Instruction Manual

4. PREPARATION OF THE SEWING MACHINE

4-1. Method of lubrication

(1) Method of circulating lubrication (when the oil collected in the under cover is reused)
Filter for plunger
Filter for plunger 2
Urethan filter
Periodically (approximately once in three months) clean the aforementioned filter
sections (four places) in order to use the machine for a long time. When the filter is
clogged, lubrication trouble will occur and break-down will be caused.
In addition, when the oil becomes dirty, replace the oil gathered in the oil tank and
the under cover.
(2) Method of non-circulation type lubrication (when only the clean oil is always used)
Lubrication to hook side
Plunger
Circulation
1
2
– 7 –
Circulation
Lubrication
Put the cap to inlet port for circulation 1 in the
same state as that at the time of delivery, and
securely fix it to the position where it does not
come in contact with the moving section.
* Remove drain screw 2 and dump the oil
which has dropped to the under cover.
When inlet port for circulation
1 comes in contact with the oil
surface, oil is absorbed without
passing the filter. As a result,
break-down will be caused.
Oil tank
Filter for circulation