Phase Matching Of Upper Shaft And Lower Shaft - Brother XM3700 Service Manual

Basic of Assembly Feed unit
2

Phase matching of Upper shaft and lower shaft

3
1. When set the groove 1 of the upper shaft pulley 2 frontward by rotating
the pulley of the upper shaft assy 3, set the mark 4 of the outer rotary
hook assy 5 frontward by rotating the lower shaft assy 6 and set the feed
cam 7 with the larger end facing backward, and then tighten the 2 screws
1 of the timing pulley D 8.
5 6 8
1 2
5
Rear
4 7
8
Set Screw, Socket (FT)
M5X5
1
1
Hex wrench 2.5mm
2 - 48