1. MECHANICAL DESCRIPTIONS
HE-800A
8
1-8. Lubrication mechanism
1. The plunger pump (2) that is attached to the lower shaft (1) draws oil up (A) through the pump filter (3) and
sends the oil (B) to the oil terminal (4), where the wick lubricates the felt (5).
2. The oil is transferred from the felt (5) by means of the wick to the following places.
1) Oil is supplied to bush F (6), and it passes through the upper shaft (7) and thread take-up crank (8) to the
needle bar crank (9). Furthermore, oil is supplied from bush F (6) to zigzag lever bush F (10).
2) Oil is supplied from the needle bar bracket support shaft (11) to the needle bar (12), and from there it is
supplied to parts such as the needle bar clamp (13).
3) Oil is supplied from the support shaft (14) to the thread take-up (15).
4) Oil is supplied to bush M (16).
5) Oil is supplied to zigzag lever bush R (17).
6) Oil is supplied to the motor lever shaft (18), and from there it is supplied to the zigzag connecting rod shaft
(19).
Oil which splatters inside the arm is collected by the felt (20) and is supplied to the crank rod guide (21) and to
the slide block (22).)
3. The oil which is sent to the oil terminal (4) is returned to the oil tank via the oil return tube (C).
4. The oil which collects in the jaw of the arm, is absorbed by the felt (23) and is drawn up by the plunger pump (2)
through the tube (D), and it is then returned to the oil tank (E) by the plunger pump (2).
4054Q
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