Lower Shaft Mechanism - Brother KE-430B Service Manual

4. ASSEMBLY
４-１２. Lower shaft mechanism
KE-430C series
BE-438C
Place the driver against the
retaining ring and provisionally
tighten the bolt.
Apply grease.
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Apply grease.
KE-430B series
BE-438B
Insert the crank rod (lower part) into the crank of the
upper shaft, and then align the mating mark on the
crank rod (upper part) from above and gently tighten
the screws.
Mating mark
* Check that the machine pulley turns smoothly.
1. Rock gear shaft [Insert from the rear of the machine head]
2. Rock gear
3. Set screw collar
4. Set screws [2 pcs]
5. Lower shaft assy [Insert from the rear of the machine head]
6. Set screw collar
7. Set screws [2 pcs]
8. Retaining ring
9. Driver
10. Bolt [Temporarily tighten]
11. Crank rod (Lower part) [Insert into upper shaft crank]
12. Crank rod (Upper part) [Align the mating mark]
13. Screws [2 pcs]
KE-430B, 430C series
Clamp the rock gear with the stepped part
of the rock gear shaft and the set screw
collar so that there is no play in the rock
gear, and then tighten the set screws.
Engage the lower shaft
gear with the rock gear.
Apply grease.
Lower shaft bush
Set the needle bar
to its lowest position
and then insert the
lower shaft with this
screw stop facing
straight downward.
Clamp the lower shaft bush with the
lower shaft gear and the set screw collar
so that there is no play in the lower shaft
bush, and then tighten the set screws.
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