JUKI TL-2200QVP Service Manual & Parts List page 9

2013.3.6 最終校正用
Remove eight setscrews 1 to remove the bottom cover.
1) checking the needle bar height
The height of the jaw section of the needle bar above the mounting
surface of the throat plate is 14.6 mm when the needle bar is in its
lower dead point.
2) needle-to-hook timing
1. Loosen three setscrews of the hook.
2. Adjust so that the center of the needle is aligned with the blade point
of the hook when the needle bar goes up 2.2 ± 0.15 mm from its lower
dead point.
3. Check the clearance between the needle and the hook. Then, tighten
the setscrews.
3) clearance between the needle and the hook
1. Loosen three setscrews of the hook.
2. Adjust so that the blade point of the hook is aligned with the center of
the needle.
3. Adjust so that a clearance of 0.06 to 0.15 mm is provided between the
blade point of the hook and the needle.
4. Temporarily tighten the setscrews. Check the needle-to-hook timing.
Then, securely tighten the setscrews.
4) Position of the bobbin case opening lever
1. Loosen setscrew 2 of the bobbin case opening lever.
2. Adjust so that an axial clearance of 0.65 to 1.1 mm is provided be-
tween the projecting section of the bobbin case opening lever and the
groove in the inner hook.
3. Adjust so that a difference in height of 0 ± 0.35 mm is provided be-
tween the top end of the projecting section of bobbin case opening
lever and the top end of the groove in the inner hook.
4. Check to make sure that the clearance and difference in height be-
tween the bobbin case opening lever and the inner hook have been
correctly adjusted. Then, securely tighten the setscrew.
(caution) contact between the bobbin case holding lever and the
hook has to be avoided.
adjustment Procedure results of improper adjustment
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