JUKI LU-2800 Series - Grease Application Procedures

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Adjustment procedures Results of Improper adjustment
2) LU-2828-6, 2828-7
①
Zero-point alignment for 2P feed adjustment
1. Set the standard feed adjusting dial
❶
to “0”.
2. Turn the 2P feed adjusting dial
❷
to counter-clockwise, remove
the 2P feed adjusting dial screw
❺
.
3. Turn 2P switch
❽
ON.
4. Carefully and slightly turn the 2P feed adjusting dial
❷
to clock-
wise until a resistance is felt so that the 2P feed adjusting dial
screw
❺
is aligned with the 2P feed adjusting base
❻
.
5. Loosen setscrew
❸
of the 2P feed adjusting dial.
6. Turn the 2P feed adjusting dial
❷
to counter-clockwise, align
the dial stopper
❹
to the stopper.
7. Tighten setscrew
❸
of the 2P feed adjusting dial.
[Conrmation]
1. Set the standard feed adjusting dial
❶
to any pitch of “0” or
more.
2. Turn the 2P feed adjusting dial
❷
to counter-clockwise, align to
0 point alignment position (it stops at the dial stopper
❹
).
3. Turn ON the 2P switch
❽
.
4. Lower the reverse feed control lever
󱢴
to align the cam section
(0 point position) of the 2P feed adjusting base
❻
with the 2P
feed adjusting pin
❼
(Fig. B).
5. Turning the handwheel, check to be sure that the stitch length
is zero (0). This shows that the zero-point alignment of the 2P
feed adjustment has been correctly carried out.
②
Forward/reverse stitch length of 2P feed adjustment
1. Loosen two setscrews
❾
of the feed adjusting eccentric pin.
2. Turn the feed adjusting eccentric pin
󱢳
to adjust forward/re-
verse stitch length.
• Direction A
→
Reverse feed length is increased.
• Direction B
→
Normal feed length is increased.
3. After the adjustment, securely tighten two setscrews
❾
of the
feed adjusting eccentric pin.
[Conrmation]
1. Set the standard feed adjusting dial
❶
to “9”.
2. Set the 2P feed adjusting dial
❷
to “6”.
3. Turn ON the 2P switch
❽
, and check forward/reverse stitch
length.
* After adjusting forward/reverse stitch length ratio of 2P adjust-
ment, forward/reverse stitch length ratio of standard feed will
change. Adjust forward/reverse stitch length ratio according to
"2.-(10) Stitch length of forward/reverse feed".