Brother CE-8080PRW, Руководство по обслуживанию

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Needle bar, presser mechanism / Upper shaft mechanism Basics of Assembly
Basics
3
Phase matching of Upper shaft and lower shaft
1. Rotate the upper shaft
1
until the trench on the upper shaft pulley
2
is at
the front.
2. Turn the lower shaft
3
to the point where the mark on the outer rotary
hook
4
is at the front, the larger feed cam
5
is at the rear, and the hole on
the lower shaft
6
is at the vertical.
3. Pull the timing belt
7
and hang it on the timing pulley D
8
.
1
7
8
4
6
3
5
3
7
2
Front Rear
4
Attachment of Tension pulley assy
1. Set the tension pulley assy.
1
to the rear cover assy., and then temporarily
tighten the 2 screws
1
.
*Key point
• Fully tighten the screw 1 after performing "4 - 4 Adjustment :
Timing belt tension".
→
Refer to 3 - 63 "Assembly of Tension pulley assy".
1
Torque
1.18 – 1.57 N·m
1
1
Giza Tite
M5X16