Toyota 2D - Page 13

11
Troubleshooting
3. Hook
Clearance
between
shuttle
driver and
shuttle
hook
<Diagnosis>
Remove the extension table, and open
the shuttle cover.
Remove the bobbin case from the hook.
When the shuttle driver is turned to left
by rotating the handweel, measure the
clearance (A) between the shuttle driver
and the shuttle hook.
A = 0.3 to 0.6
mm
[Adjustment]
page.42
Flaw on
hook blade
point
<Diagnosis>
Check the hook blade point by touching
the hook blade point with finger.
Flaw not
allowed.
Repair with
sand paper
(#800).
4. Needle and
hook
Amount of
needle
elevation
<Condition>
<SD>
Pattern selection dial: "5"
<2D>
Pattern selection dial: "3"
<3D>
Pattern selection dial: "4"
<Diagnosis>
Remove the extension table, and open
the shuttle cover.
When the hook blade point is aligned
with the needle center by rotating the
handweel, measure the travel distance
(A) of needle bar, regarding the lower
dead point of needle bar as 0.
A = 1.85 ± 0.15
mm
[Adjustment]
page.26
Step Item Diagnosing Method Standard
Reference
Page