Motor Pulley Data; Motor Pulley Change - Brother b831 Service Manual

Bi Motor pulley
Medium
LT2-B832-403A
703A
LT2-B835-403A
703A
50 Hz
60 Hz
50 Hz 60 Hz
Machine speed 4000 spm
3000 spm
Motor Pulley
Size
Part No.
1 20 Pulley
224545-000
105 Pulley
226389-000
105 Pulley
226389-000
90 Pulley
224506-001
Belt Cover
# No.
Part No.
#12-2
224547-001
#12-1
226393-001
#12-1
226393-001
Treadle Unit
H No.
Part No.
#5-38
224396-038
#5-30
224396-030
Control Box
Assembly
V
Part No.
110/220 V 100/200 V
226531-001 226426-001
110/220V 100/200V
226531-002 226426-002
Thick
LT2-B832-405A
705A
LT2-B835-405A
705A
LS2-B837-300A
50 Hz
60 Hz 50 Hz
60 Hz
Machine speed
3000 spm
3000 spm
Motor Pulley
Size
Part No.
105 Pulley
226389-000
90 Pulley
224506-001
105 Pulley
226389-000
90 Pulley
224506-001
Belt Cover
# No.
Part No.
#12-1
226393-001
#12-1
226393-001
Treadle Unit
.« No.
Part No.
#5-30
224396-030
#5-30
224396-030
Control Box
Assembly
V
Part No.
110/220V . 100/200 V
226531-002 226426-002
110/220 V . 100/200 V
226531-002 226426-002
* When ordering a motor be sure to specify the sewing machine model number, intended materials to be used, and either
single or three phase.
* Parts in the above table are for both single and three phase machines.
* Machines and motors for voltages other than those specified above can be manufactured to order. Consult your local
dealer.
* Be sure to refer to the parts book when ordering any parts.
(2) Motor pulley change
(fr.
10 mm
- 4 -
Use the V-belt included together with the machine
head. After installing the belt, loosen both hexagon
nuts O. and adjust the tension of the belt. Make sure
that the correct belt tension is maintained. Then
tighten the hexagon nuts.
The belt can be depressed about 10 mm with a finger.