Brother PR655 - Change Box Assembly (Step 2)

3 - 68
Needle bar change unit
Main unit
Assembly Assembly
2 Change box assembly (Step 2)
1. Attach the change gear 1 to the change camshaft.
2. Move the change gear toward the change cam, and secure it with the 2
screws 1.
*Key point
• Align the screw hole on the change gear with the D-cut face
on the change camshaft.
3. Attach the plain washer (M6) 5, C differential gear 3, and plain washer
(M6) 5 to the differential gear shaft 2, and then attach the retaining ring
E4.
4. Attach the differential gear shaft assembly to the change gear box, and then
tighten the screw 2.
*Key point
• Turn the differential gear shaft to adjust the backlash of the C
differential gear.
5. Apply MOLYKOTE EM-30L to the groove 4 on the change cam.
Apply MOLYKOTE EM-30L to the groove on the
change cam.
Size of a bean
1
Torque
1.18 — 1.57 N-m
2
Torque
0.78 — 1.18 N-m
2
3
5
Retaining ring E4
2
1
2
4
1
Set Screw, Socket (CP
)
M5X6
Set Screw, Socket (FT)
M4X4