– 67 –
Adjustment procedures
Results of Improper adjustment
3) LU-2818-7, 2868-7
①
Zero-point alignment for 2P feed adjustment
1. Set the standard feed adjusting dial
❶
to “0”.
2. Loosen two clamping screws
❷
of the feed adjusting dial to
remove the 2P feed adjusting dial
❸
.
3. Loosen three setscrews
❹
of the feed dial cover B to remove
the feed dial cover B
❺
. At this time, also remove three spac-
ers
.
4. Turn the hexagonal shaft
❻
to counterclockwise to remove the
feed adjusting dial screw
❼
.
5. Loosen five setscrews of the window plate to remove the win
-
dow plate.
6. Loosen clamping screws
❾
of the feed adjusting pin support
arm B
❽
.
7. Turn the power ON, and turn the 2P switch ON. The air cylin-
der works to make the relationship between the feed adjust-
ing base B
and the feed adjusting pin support arm B
❽
as
shown in Fig. A.
8. Move the feed adjusting pin support arm B
❽
to align the cam
section (zero-point position) of the feed adjusting base B
with the feed adjusting pin
(Fig. B). In that state, tighten
clamping screws
❾
of the feed adjusting pin support arm B
❽
.
9. Turn the hexagonal shaft
❻
to clockwise until a light resistance
is felt so that the feed adjusting dial screw
❼
is in contact with
the feed adjusting base B
.
10. Attach the feed dial cover B
❺
using three setscrews
❹
of the
feed dial cover B. At this time, insert three spacers
between
the machine arm and the feed dial cover B
❺
.
11. Attach the 2P feed adjusting dial
❸
using two clamping screws
❷
of the feed adjusting dial.
[Confirmation]
1. Set the standard feed adjusting dial
❶
to any pitch of “0” or
more.
2. Set the 2P feed adjusting dial
❸
to “0”.
3. Turn ON the 2P switch.
4. Lower the reverse feed lever
to align the cam section (0
point position) of the feed adjusting base B
with the feed
adjusting pin
. (Fig. B)
5. Turning the handwheel, check to be sure that the stitch pitch
is zero (0). This shows that the zero-point alignment of the 2P
feed adjustment has been correctly carried out.
Summary of Contents for LU-2800 Series
Page 92: ... 80 2 NEEDLE BAR COMPONENTS ...
Page 93: ... 81 3 HOOK OPENNER COMPONENTS ...
Page 94: ... 82 4 UPPER FEED COMPONENTS ...
Page 95: ... 83 5 HAND LIFTER AUTO LIFTER COMPONENTS 6 KNEE LIFTER COMPONENTS FOR LU 2810 2860 ...
Page 96: ... 84 7 LOWER FEED COMPONENTS ...
Page 97: ... 85 LOWER FEED COMPONENTS FOR LU 2828 6 2828 7 ...
Page 98: ... 86 8 FEED ADJUST COMPONENTS ...
Page 99: ... 87 FEED ADJUST COMPONENTS FOR LU 2828 6 2828 7 ...
Page 100: ... 88 FEED ADJUST COMPONENTS FOR LU 2818 7 2868 7 ...
Page 102: ... 90 AUTO BT COMPONENTS FOR LU 2810 6 2860 6 2828 6 AUTO BT COMPONENTS FOR LU 2828 7 ...
Page 103: ... 91 AUTO BT COMPONENTS FOR LU 2818 7 2868 7 ...
Page 105: ... 93 THREAD TRIMMING COMPONENTS FOR LU 2828 6 2828 7 ...
Page 106: ... 94 12 THREAD TENSION COMPONENTS FOR LU 2810 2810 6 2810 7 2828 6 2828 7 2818 7 ...
Page 107: ... 95 13 THREAD TENSION COMPONENTS FOR LU 2860 2860 6 2860 7 2868 7 ...
Page 109: ... 97 15 BOBBIN WINDER COMPONENTS ...
Page 110: ... 98 16 CONDENSE COMPONENTS FOR LU 2818 7 2868 7 ...
Page 142: ......