Brother XM3700 Service Manual page 13

Outline of Mechanism Driveline
(B) Movement of feed dog and rotary hook
Lower shaft gear Lower shaft
Feed cam
Outer rotary
hook assembly
Feed arm B
Feed arm A
V feed attachment Feed stand
Feed dog
F finger frame
F finger
2
Feed arm B
Feed dog
Feed stand
Lower shaft gear
Timing pulley D Timing belt
Feed adjusting
Feed adjuster
shaft
Upper shaft pulley
2
Feed adjusting cam,
SS cam
Upper shaft
Reverse sewing lever
Connecting rod
Feed connecting lever
Feed cam
Feed adjuster
V feed attachment
Feed arm A
Outer rotary hook assembly
1 - 4
Main motor
Motor belt
Timing pulley
Upper shaft
Upper shaft
pulley
Feed adjusting
Worm gear
cam, SS cam
F finger
F finger frame (C)
Reverse sewing
lever
Connecting rod
Feed connecting
lever
Timing pulley
Worm gear
Lower shaft
Feed adjusting shaft
Pulley
Pulley
Timing belt
Motor belt
Timing pulley D
Main motor