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Page 21
Figure 4.1
Figure 4.2
Figure 4.3
4. Axial Play Check and Adjustment
Axial or end play on shafting can result in noise, wear and
faulty sewing.
Check:
1. Check the main-shaft by pushing and pulling on the
hand wheel.
(Figure 4.1)
Note: A small amount of main
shaft axial play is permissible. Too much main shaft play,
however, may cause noise and or stitching issues.
Remove play here
Test left to right
If a correction is necessary:
• Remove the front cover.
• Loosen the collar screws
(2.5 mm handle Allen)
(Figure 4.2).
• Adjust so that minimal to no play is detected.
• Provisionally set the screws.
• Check that the shaft has minimal play and no
tightness from the collar being too tight by rotating
the shaft through a few 360
o
rotations.
• Fully tighten the screws.
• Check shaft again for play or tightness.
2.
Check
the hook shaft by pushing and pulling the hook
as shown in
(Figure 4.3).
If a correction is necessary:
• Remove the front cover.
• Remove the play by loosening the hook-shaft thrust
collar
(not the hook-shaft timing pulley) and adjusting
out any axial play
(Figure 4.4).
Note: There is no fl at
for the hook-shaft thrust collar.
• Check for proper setting by rotating shaft through a
few 360
o
rotations.
Take out play here
Collar set screws
Figure 4.4
