Brother SB3734T Service Manual page 56

Disassembly
4. Remove the crank shaft bushing from the driving shaft.
5. Remove the screw (screw, pan M4x10) to remove the balance L from the driving shaft.
6. Remove the two screws (set screw, socket (FT) M4x4) to remove the needle bar eccentric wheel from
the driving shaft.
7. Remove the two screws (set screw, socket (FT) M4x4) to remove the spiral bevel gears R from the
driving shaft.
8. Remove the retaining ring E6 to remove the washer 8 and the crank shaft bushing from the driving
shaft.
9. Remove the screw (set screw, socket (CP) M4x4) to remove the collar from the driving shaft.
10.Remove the timing pulley B from the driving shaft.
Screw, pan M4x10
Balance L
Needle bar eccentric wheel
Crank shaft
bushing
Set screw, socket (FT) M4x4
Screw, Pan M4X10
Set Screw, Socket (FT) M4X4
Set Screw, Socket (CP) M4X4
Driving mechanism
Set screw, socket
Crank shaft
(FT) M4x4
bushing
Washer 8
Spiral bevel gears R
Retaining ring E6
Crank shaft
bushing
Needle bar eccentric
wheel
Fig. 2-2
2 - 45
Collar
Set screw, socket
(CP) M4x4
Timing pulley B
Driving shaft
Balance L
Driving shaft
Spiral bevel
gears R
Collar
Crank shaft
bushing