Stitch Width Stepping Motor - Bernina aurora 430 Service Manual

Stitch width stepping motor

Disassembly:
1) Remove covers.
2) Loosen screw 26a.
3) Remove adjusting wheel safety clip (161).
4) Remove adjusting wheel (162).
5) Remove drive gear 26.
6) Remove both securing screws 27.
7) Replace stepping motor.
Assembly:
1) Fit new stepping motor and fasten with
the two securing screws.
2) Refit adjusting wheel (162).
3) Refit adjusting wheel safety stop (161).
4) Refit drive sprocket but don't fasten it
yet.
5) Reconnect motor. Refit front cover.
6) Attach front cover.
7) Attach rear cover.
8) Connect mains plug.
9) Set machine to basic service programme
settings.
10) Select test no. 3.4 (see page 30).
11) Pin gear in 0,5 mm distance to metal
sheet and fasten gear.
12) Set needle position.
13) Refit covers.
14) Carry out a functional check.
15) Sewing-off.
26a
26
162
161
59
27
27