Toyota 2D - Page 17

15
Troubleshooting
2. 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 hand-
weel, 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
3. Needle and
upper plate
spring
Clearance
between
needle and
upper plate
spring
<Condition>
<SD>
Pattern selection dial: "11"
<2D>
Pattern selection dial: "7"
<3D>
Pattern selection dial: "3"
Stitch width lever: "5"
<Diagnosis>
When the needle bar is brought to the
lower dead point at the right side by rotat-
ing the handweel, measure the clearance
(A, B) between the needle and the upper
plate spring.
A = 0.5 to 1.2
mm B = 0.5 to
1.0 mm
[Adjustment]
page.28
Step Item Diagnosing Method Standard
Reference
Page