Brother KE-434B, 435C, 431B, 434C, 432C User Manual

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KE-430B, 430C, 431B, 431C

SERVICE MANUAL

KE-432B, 432C, 433B

 

KE-434B, 434C, 435B, 435C

 

KE-436B, 436C, 484C

 

BE-438B, 438C

 

Please read this manual before using the machine.

Please keep this manual within easy reach for quick reference.

ELECTRONIC LOCKSTITCH BAR TACKER ELECTRONIC LOCKSTITCH BELT LOOP BAR TACKER ELECTRONIC LOCKSTITCH PATTERN TACKER ELECTRONIC LOCKSTITCH BUTTON SEWER

This service manual is intended for KE-430B series, KE-430C series, BE-438B, BE-438C, KE-484C; be sure to read the KE-430B series, KE-430C series, BE-438B, BE-438C, KE-484C instruction manual before this manual.

Carefully read the “SAFETY INSTRUCTIONS” below and the whole of this manual to understand this product before you start maintenance.

As a result of research and improvements regarding this product, some details of this manual may not be the same as those for the product you purchased.

If you have any questions regarding this product, please contact a Brother dealer.

SAFETY INSTRUCTIONS

1. Safety indications and their meanings

This service manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people.

The meanings of these indications and symbols are given below.

Indications

DANGER The instructions which follow this term indicate situations where failure to follow the instructions will almost certainly result in death or severe injury.

The instructions which follow this term indicate situations where failure to follow the CAUTION instructions could cause injury when using the machine or physical damage to equipment

and surroundings.

Symbols

This symbol ( ) indicates something that you should be careful of. The picture inside the triangle indicates the nature of the caution that must be taken.

(For example, the symbol at left means “beware of injury”.)

This symbol ( ) indicates something that you must not do.

This symbol ( ) indicates something that you must do. The picture inside the circle indicates the nature of the thing that must be done.

(For example, the symbol at left means “you must make the ground connection”.)

i

KE-430B, 430C series

2. Notes on safety

DANGER

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.

CAUTION

Environmental requirements

Use the sewing machine in an area which is free from sources of strong electrical noise such as high-frequency welders.

Sources of strong electrical noise may cause problems with correct operation.

Any fluctuations in the power supply voltage should be within 10% of the rated voltage for the machine. Voltage fluctuations which are greater than this may cause problems with correct operation.

The power supply capacity should be greater than the requirements for the sewing machine’s electrical consumption.

Insufficient power supply capacity may cause problems with correct operation.

The pneumatic delivery capability should be greater than the requirements for the sewing machine’s total air consumption.

Insufficient pneumatic delivery capability may cause problems with correct operation.

The ambient temperature should be within the range of 5 C to 35 C during use.

Temperatures which are lower or higher than this may cause problems with correct operation.

The relative humidity should be within the range of 45% to 85% during use, and no dew formation should occur in any devices.

Excessively dry or humid environments and dew formation may cause problems with correct operation.

Avoid exposure to direct sunlight during use. Exposure to direct sunlight may cause problems with correct operation.

In the event of an electrical storm, turn off the power and disconnect the power cord from the wall outlet. Lightning may cause problems with correct operation.

Installation

Machine installation should only be carried out by a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.

The sewing machine weighs more than 52 kg. The installation should be carried out by two or more people.

Do not connect the power cord until installation is complete, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

Hold the machine head with both hands when tilting it back or returning it to its original position. Furthermore, after tilting back the machine head, do not push the face plate side or the pulley side from above, as this could cause the machine head to topple over, which may result in personal injury or damage to the machine.

Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

All cords should be secured at least 25 mm away from any moving parts. Furthermore, do not excessively bend the cords or secure them too firmly with staples, otherwise there is the danger that fire or electric shocks could occur.

Install the belt covers to the machine head and motor.

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result.

Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhoea.

Keep the oil out of the reach of children.

KE-430B, 430C series

ii

CAUTION

Sewing

This sewing machine should only be used by opera-

If using a work table which has casters, the casters

tors who have received the necessary training in safe

should be secured in such a way so that they cannot

use beforehand.

move.

The sewing machine should not be used for any

Attach all safety devices before using the sewing

applications other than sewing.

machine. If the machine is used without these

Be sure to wear protective goggles when using the

devices attached, injury may result.

 

machine.

Do not touch any of the moving parts or press any

If goggles are not worn, there is the danger that if a

objects against the machine while sewing, as this

needle breaks, parts of the broken needle may enter

may result in personal injury or damage to the

your eyes and injury may result.

machine.

Set the needle to the needle up stop position before

If an error occurs in machine operation, or if abnormal

turning off the power.

noises or smells are noticed, immediately turn off the

If this is not done, the wiper may strike the needle,

power switch. Then contact your nearest Brother

which might cause the needle to break.

dealer or a qualified technician.

Turn off the power switch at the following times,

If the machine develops a problem, contact your

otherwise the machine may operate if the foot switch

nearest Brother dealer or a qualified technician.

is depressed by mistake, which could result in injury.

 

When threading the needle

 

When replacing the needle and bobbin

 

When not using the machine and when leaving the

 

machine unattended

 

Cleaning

Set the needle to the needle up stop position before

Be sure to wear protective goggles and gloves when

turning off the power.

 

 

handling the lubricating oil and grease, so that they

If this is not done, the wiper may strike the needle,

do not get into your eyes or onto your skin, otherwise

which might cause the needle to break.

 

inflammation can result.

Turn off the

power switch

before

carrying out

Furthermore, do not drink the oil or eat the grease un-

der any circumstances, as they can cause vomiting

cleaning, otherwise the machine may operate if the

and diarrhoea.

foot switch is

depressed by

mistake,

which could

Keep the oil out of the reach of children.

result in injury.

 

 

 

 

 

 

 

Maintenance and inspection

 

Maintenance and inspection of the sewing machine

If the power switch and air need to be left on when

 

should only be carried out by a qualified technician.

carrying out some adjustment, be extremely careful to

 

Ask your Brother dealer or a qualified electrician to

observe all safety precautions.

 

 

 

carry out any maintenance and inspection of the

Hold the machine head with both hands when tilting it

 

electrical system.

back or returning it to its original position.

 

Set the needle to the needle up stop position before

Furthermore, after tilting back the machine head, do

 

turning off the power.

not push the face plate side or the pulley side from

 

If this is not done, the wiper may strike the needle,

above, as this could cause the machine head to

 

which might cause the needle to break.

topple over, which may result in personal injury or

 

Turn off the power switch and disconnect the power

damage to the machine.

 

Use only the proper replacement parts as specified

 

cord from the wall outlet at the following times,

 

otherwise the machine may operate if the foot switch

by Brother.

 

is depressed by mistake, which could result in injury.

If any safety devices have been removed, be abso-

 

When carrying out inspection, adjustment and main-

lutely sure to re-install them to their original positions

 

tenance

and check that they operate correctly before using

 

When replacing consumable parts such as the ro-

the machine.

 

tary hook

Any problems in machine operation which result from

 

Disconnect the air hoses from the air supply and wait

unauthorized modifications to the machine will not be

 

for the needle on the pressure gauge to drop to “0”

covered by the warranty.

 

before carrying out inspection, adjustment and repair

 

 

of any parts which use the pneumatic equipment.

 

 

 

iii

KE-430B, 430C series

3. Warning labels

The following warning labels appear on the sewing machine.

Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer.

1

2

Safety devices

Eye guard

Finger guard

3 High temperature warning display Thread take-up cover

Thread take-up solenoid cover Belt cover

Frame side cover, etc.

4

5

Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

Direction of operation

Thread take-up cover

Frame side cover

2670Q

Eye guard

 

 

 

Thread take-up

Belt cover

solenoid cover

 

 

 

 

Finger guard

 

 

 

 

 

 

 

KE-430B

KE-430C

 

2737Q

 

 

KE-430B, 430C series

iv

CONTENTS

1. SPECIFICATIONS ...............................

1

1-1.

SPECIFICATIONS ...........................................

1

1-2.

Standard thread tension...................................

5

2. MECHANICAL DESCRIPTIONS .........

7

2-1.

Needle bar and thread take-up

 

 

mechanisms.....................................................

7

2-2.

Lower shaft and shuttle race mechanisms .......

9

2-3.

Work clamp lifter mechanism ...........................

10

2-4.

Work clamp open-close mechanism

 

 

(KE-432B, 432C)..............................................

12

2-5.

Thread wiper mechanism.................................

13

2-6.

Feed mechanism .............................................

15

2-7.

Thread trimmer mechanism .............................

17

2-8.

Thread nipper mechanism ...............................

19

2-9.

Thread take-up mechanism .............................

21

3. DISASSEMBLY ...................................

22

3-1.

Covers..............................................................

22

3-2.

Work clamp arm mechanism

 

 

(KE-430B, 430C, 431B, 431C).........................

24

3-3.

Work clamp arm mechanism

 

 

(KE-432B, 432C)..............................................

25

3-4.

Work clamp arm mechanism (KE-433B) ..........

26

3-5.

Work clamp arm mechanism (KE-434B, 434C,

 

 

435B, 435C, 436B, 436C, 484C)...........................

27

3-6.

Work clamp arm (BE-438B, 438C) .....................

29

3-7.

Shuttle hook mechanism..................................

30

3-8.

Needle bar mechanism ....................................

31

3-9.

Stepping foot mechanism

 

 

(KE-435B, 435C, 436B, 436C).........................

32

3-10. Upper shaft mechanism....................................

33

3-11. Lower shaft mechanism....................................

35

3-12. Feed mechanism (1).........................................

37

3-13. Feed mechanism (2).........................................

39

3-14.

Work clamp lifter mechanism

 

 

(Solenoid specifications) ..................................

41

3-15. Stepping foot lifter mechanism

 

 

(KE-435B, 435C, 436B, 436C).........................

43

3-16.

Thread wiper mechanism..................................

44

3-17.

Thread nipper mechanism ................................

47

3-18.

Thread take-up mechanism ..............................

49

3-19.

Thread trimmer mechanism ..............................

51

4. ASSEMBLY.........................................

54

4-1.

Thread trimmer mechanism (1) ........................

54

4-2.

Thread nipper mechanism................................

56

4-3.

Thread wiper mechanism .................................

59

4-4.

Thread take-up mechanism..............................

62

4-5.

Work clamp lifter mechanism

 

 

(Solenoid specifications)...................................

65

4-6.

Feed mechanism (1).........................................

70

4-7.

Feed mechanism (2).........................................

74

4-8.

Upper shaft mechanism....................................

76

4-9.

Stepping foot lifter mechanism

 

 

(KE-435B, 435C, 436B, 436C) .........................

79

4-10.

Stepping foot mechanism

 

 

(KE-435B, 435C, 436B, 436C) .........................

80

4-11.

Needle bar mechanism.....................................

82

4-12.

Lower shaft mechanism....................................

83

4-13.

Thread trimmer mechanism (2) ........................

86

4-14.

Shuttle hook mechanism ..................................

87

4-15.

Work clamp arm mechanism

 

 

(KE-430B, 430C, 431B, 431C) .........................

89

4-16.

Work clamp arm mechanism

 

 

(KE-432B, 432C) ..............................................

90

4-17. Work clamp arm mechanism (KE-433B)...........

91

4-18. Work clamp arm mechanism (KE-434B, 434C,

 

 

435B, 435C, 436B, 436C, 484C) ...........................

92

4-19. Work clamp arm mechanism

 

 

(BE-438B, 438C) ..............................................

94

4-20.

Work clamp arm mechanism

 

 

(Applying grease) .............................................

95

4-21.

Covers ..............................................................

97

KE-430B, 430C series

5. ADJUSTMENT.....................................

99

5-1.

Adjusting the needle bar height........................

99

5-2.

Adjusting the needle bar lift amount.................

100

5-3.

Adjusting the driver needle guard ....................

101

5-4.

Adjusting the needle clearance ........................

101

5-5.

Adjusting the shuttle race thread guide ............

102

5-6.

Adjusting the clearance between the shuttle

 

 

hook and bobbin case holder position bracket

 

 

(KE-484C) ........................................................

103

5-7.

Adjusting the work clamp lift amount

 

 

(KE-430B, 430C, 431B, 431C, 433B) ..............

104

5-8.

Adjusting the work clamp lift amount

 

 

(KE-432B, 432C)..............................................

104

5-9.

Adjusting the work clamp lift amount (KE-434B,

 

 

434C, 435B, 435C, 436B, 436C, 484C) ...........

105

5-10.

Adjusting the button clamp lift amount

 

 

(BE-438B, 438C)..............................................

106

5-11.

Work clamp pressure adjustment

 

 

(KE-432B, 432C)..............................................

107

5-12. Adjusting the holding pressure

 

 

(BE-438B, 438C)..............................................

107

5-13. Work clamp closing-distance adjustment

 

 

(KE-432B, 432C)..............................................

108

5-14. Adjusting the position of the button holder

 

 

(BE-438B, 438C)..............................................

109

5-15. Work clamp adjustment

 

 

(KE-435B, 435C, 436B, 436C).........................

109

5-16. Changing the work clamp lift

 

 

(KE-435B, 435C, 436B, 436C).........................

110

5-17. Adjusting the thread wiper ................................

111

5-18. Adjusting the thread take-up amount................

114

5-19. Adjusting the movable knife..............................

116

5-20. Adjusting the position of the thread trimming

 

 

link mechanism ................................................

122

5-21. Adjusting the backlash......................................

123

5-22. Adjusting the presser solenoid position

 

 

(Solenoid specifications) ..................................

124

5-23. Adjusting the sensor perceive plate position

 

 

(Solenoid specifications) ..................................

125

5-24. Adjusting the home position..............................

126

5-25. Adjusting the needle up stop position ...............

129

5-26. Adjusting the tension of the upper shaft timing

 

belt ...................................................................

129

5-27. Checking the head position switch....................

130

5-28. Work clamp interchangeability

 

(KE-433B).......................................................

131

5-29. Work clamp interchangeability (KE-434B,

 

434C, 435B, 435C, 436B, 436C, 484C) ...........

131

5-30. Adjustment of air pressure (Pneumatic

 

specifications)...................................................

132

5-31. Adjustment of inner clamping device ................

132

6. TROUBLESHOOTING ........................

133

7. OPTIONAL PARTS .............................

136

8. ELECTRIC MECHANISM....................

138

8-1. Precautions at the time of adjustment.................

138

8-2. Components inside the control box and

 

the operation panel...........................................

138

8-3. Fuse explanation ................................................

139

8-4. Connectors .........................................................

140

8-5. Explanation of the DIP switches .........................

147

8-6. Explanation of the memory switches

 

(KE-430*, 431*, 432*, 433B, 434*, 435*,

 

484C, BE-438*) ................................................

150

8-7. Explanation of the memory switches

 

(KE-436B, 436C) ..............................................

155

8-8. Setting the work clamp mode..............................

159

8-9. Checking the input sensor and DIP switch

 

input..................................................................

161

8-10. Checking the input voltage................................

163

8-11. Clearing all memory settings.............................

164

8-12. Confirming software version .............................

165

8-13. Table of error codes..........................................

167

8-14. Troubleshooting ................................................

171

8-15. Control circuit block diagram.............................

190

KE-430B, 430C series

1. SPECIFICATIONS

. SPECIFICATIONS

- . SPECIFICATIONS

 

1

Ordinary materials

 

2

 

Bar tacking length

 

 

 

1

 

 

Ordinary materials

 

5

 

 

6 -14 mm

 

 

 

 

2

 

 

Denim

 

 

 

 

 

 

 

 

 

 

 

 

2

Denim

 

3

 

Bar tacking length

 

 

 

7

 

 

Knitted materials

 

7

Knitted materials

 

 

14 - 25 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-432B

 

 

 

 

 

 

 

 

KE-430B

 

KE-431B

 

 

 

KE-433B

 

 

 

 

 

 

 

Electronic lockstitch

 

 

Electronic lockstitch

 

 

 

Electronic lockstitch

 

Electronic lockstitch

 

 

 

 

 

 

 

 

eyelet buttonhole

 

 

decorative pattern

 

 

 

 

 

bar tacker

 

belt loop bar tacker

 

 

 

 

 

 

 

 

 

 

end bar tacker

 

 

tacker

 

 

 

 

 

 

 

 

 

 

 

 

 

Stitch formation

 

 

 

 

 

 

Single needle lock stitch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum sewing speed

 

 

 

 

 

2,700 rpm

 

 

 

 

 

2,500 rpm

 

 

 

 

 

 

 

 

 

Maximum pattern size

 

 

 

30 10 mm max.

 

12 3 mm max.

 

30 30 mm max.

 

 

 

 

 

 

 

Feed mechanism

 

 

 

R- intermittent feed mechanism (pulse-motor driven mechanism)

 

 

 

 

 

 

 

 

 

Stitch length

 

 

 

 

 

 

0.1 - 10.0 mm

 

 

 

 

 

 

 

 

 

 

Number of stitches

 

 

 

 

 

 

Variable

 

 

 

 

 

 

Maximum stitch number

 

 

 

20,000 stitches (including 10,000 stitches which can be added)

 

 

 

 

 

 

 

 

 

Work clamp lifter

 

 

 

 

 

 

Solenoid type

 

 

 

 

 

 

 

 

 

 

Work clamp height

 

 

 

 

 

 

17 mm max.

 

 

 

 

 

 

 

 

 

Rotary hook

 

 

 

 

 

Shuttle hook (shuttle hook 2, optional)

 

 

 

 

 

 

 

 

 

 

Wiper device

 

 

 

 

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

 

Thread trimmer device

 

 

 

 

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

 

Thread take-up device

 

 

 

 

 

 

Standard equipment

 

 

 

 

 

 

Data storage method

 

 

 

P-ROM (Any sewing pattern can be added using PS-3000.)

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of user programs

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of cycle programs

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

3 sewing patterns are

 

 

 

 

 

35 sewing patterns are

 

6 sewing patterns are

 

 

 

 

Number of stored data

 

 

set already

 

set already

 

set already

 

 

 

 

 

 

(Up to 100 patterns can be added. Total number of stitches of stored data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

which can be added is within 10,000.)

 

Motor

 

 

 

 

 

 

Three-phase 400W induction motor

 

 

 

 

 

 

 

 

Machine head: 52 kg, Operation panel: 0.6 kg,

 

Weights

 

 

 

 

 

 

 

 

Control box: 9 - 19 kg (depending on destination)

 

 

 

 

 

 

 

 

Power source

 

 

 

 

 

Single-phase 110, 220 - 230, 240V

 

 

 

 

 

 

 

3-phase 220-230, 380, 400V

 

 

 

 

 

 

 

 

Maximum electric power consumption; 600VA

 

1

KE-430B, 430C series

1. SPECIFICATIONS

 

1

 

Medium materials

 

 

 

 

 

 

 

 

 

 

2

 

Heavy materials

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-436B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-434B

 

KE-435B

 

Electronic lockstitch

 

 

BE-438B

 

 

 

 

 

Electronic lockstitch

 

pattern tacker

 

 

 

 

 

 

Electronic lockstitch

 

 

 

 

Electronic lockstitch

 

 

 

 

 

pattern tacker

 

with stepping foot

 

 

 

 

 

 

pattern tacker

 

 

 

 

button sewer

 

 

 

 

 

with stepping foot

 

and programming

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

function

 

 

 

 

Stitch formation

 

 

Single needle lock stitch

 

 

 

 

 

 

 

 

 

 

 

 

Maximum sewing speed

 

 

2,500 rpm (Pitch 3 mm)

 

 

 

2,500 rpm

 

 

 

 

 

 

 

 

 

 

Maximum pattern size

 

 

100 60 mm max.

 

 

 

0 - 6.4 0 - 6.4 mm

 

 

 

 

 

 

 

 

Feed mechanism

R- intermittent feed mechanism (pulse-motor driven mechanism)

 

 

 

 

 

 

 

 

Stitch length

 

 

0.1 - 10.0 mm

 

 

 

 

 

 

 

 

 

 

Number of stitches

 

 

Variable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20,000 stitches (including 10,000 stitches

 

20,000 stitches

 

20,000 stitches

Maximum stitch number

 

 

(including 10,000

which can be added)

 

(One pattern)

 

stitches which can

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

be added)

Work clamp lifter

Solenoid type or

 

Pneumatic type

 

Solenoid type

pneumatic type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Work clamp height

 

17 mm max. (for solenoid)

 

 

 

13 mm max.

25 mm max. (for pneumatic) (Max. 17 mm for inner clamping device)

 

 

 

 

 

 

 

 

Rotary hook

 

 

Shuttle hook (shuttle hook 2, optional)

 

 

Wiper device

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

Thread trimmer device

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

Thread take-up device

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

Stepping foot lift amount

 

 

18 mm

 

 

 

Stepping foot stroke

 

 

0 mm, 3 - 8 mm

 

 

 

Safety device

 

 

built-in stopping mechanism

 

 

 

 

 

 

 

 

 

 

 

 

 

P-ROM (Any sewing

Data storage method

P-ROM (Any sewing pattern can be added

 

3.5 floppy disk

 

pattern can be

using PS-3000.)

 

2HD/1.44MB, 2DD

 

added using

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PS-3000.)

Number of user programs

 

16

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

Number of cycle programs

 

4

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49 sewing patterns are

Number of stored data

 

(*)

 

 

 

 

set already

 

 

 

 

 

 

 

 

 

 

 

 

(*)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor

 

 

 

Three-phase 400W induction motor

 

 

 

 

 

 

Machine head: 56 kg, Operation panel: 0.6 kg (2.8 kg: KE-436B),

Weights

 

 

 

Control box: 9 - 19 kg (depending on destination)

 

 

 

 

 

 

 

 

 

Power source

 

 

Single-phase 110, 220 - 230, 240V

 

 

 

 

3-phase 220-230, 380, 400V

 

 

 

 

 

 

 

 

Maximum electric power consumption; 600VA

 

 

* Up to 100 patterns can be added. Total number of stitches of stored data which can be added is within 10,000.

KE-430B, 430C series

2

1. SPECIFICATIONS

 

1

Ordinary materials

 

2

 

Bar tacking length

 

 

 

 

 

 

 

2

Denim

 

 

6 -14 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

Knitted materials

 

3

 

Bar tacking length

 

 

 

 

 

 

 

 

 

 

 

14 -25 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-432C

 

 

 

 

 

 

 

 

KE-430C

 

KE-431C

 

 

 

BE-438C

 

 

 

 

 

 

 

Electronic lockstitch

 

 

 

 

 

Electronic lockstitch

 

Electronic lockstitch

 

 

 

Electronic lockstitch

 

 

 

 

 

eyelet buttonhole

 

 

 

 

 

 

 

bar tacker

 

belt loop bar tacker

 

 

 

button sewer

 

 

 

 

 

 

 

end bar tacker

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stitch formation

 

 

 

 

 

 

Single needle lock stitch

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum sewing speed

 

 

 

 

 

2,700 rpm

 

 

 

 

2,500 rpm

 

 

 

 

 

 

 

 

 

Maximum pattern size

 

30 26 mm max.

 

30 10 mm max.

 

12 3 mm max.

 

0 - 6.4 0 - 6.4 mm

 

 

 

 

 

 

 

 

Feed mechanism

 

 

 

R- intermittent feed mechanism (pulse-motor driven mechanism)

 

 

 

 

 

 

 

 

 

Stitch length

 

 

 

 

 

 

0.1 - 10.0 mm

 

 

 

 

 

 

 

 

 

 

Number of stitches

 

 

 

 

 

 

Variable

 

 

 

 

 

 

Maximum stitch number

 

 

 

20,000 stitches (including 10,000 stitches which can be added)

 

 

 

 

 

 

 

 

 

Work clamp lifter

 

 

 

 

 

 

Solenoid type

 

 

 

 

 

 

 

 

 

 

 

 

 

Work clamp height

 

 

 

 

 

17 mm max.

 

 

 

 

13 mm max.

 

 

 

 

 

 

 

 

 

 

Rotary hook

 

 

 

 

 

Shuttle hook (shuttle hook 2, optional)

 

 

 

 

 

 

 

 

 

 

Wiper device

 

 

 

 

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

 

Thread trimmer device

 

 

 

 

 

 

Standard equipment

 

 

 

 

 

 

 

 

 

 

Thread take-up device

 

 

 

 

 

 

Standard equipment

 

 

 

 

 

 

Data storage method

 

 

 

P-ROM (Any sewing pattern can be added using PS-3000.)

 

 

 

 

 

 

 

 

 

 

 

 

Number of user programs

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of cycle programs

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

3 sewing patterns are

 

 

 

 

 

61 sewing patterns are

 

6 sewing patterns are

 

 

 

49 sewing patterns are

Number of stored data

 

 

set already

 

set already

 

set already

 

 

set already

 

 

 

(Up to 100 patterns can be added. Total number of stitches of stored data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

which can be added is within 10,000.)

 

Motor

 

 

 

 

 

 

Three-phase 400W induction motor

 

 

 

 

 

 

 

 

 

Machine head: 52 kg, Operation panel: 0.6 kg,

 

Weights

 

 

 

 

 

 

 

 

 

 

Control box: 9 - 19 kg (depending on destination)

 

 

 

 

 

 

 

 

 

Power source

 

 

 

 

 

Single-phase 110, 220 - 230, 240V

 

 

 

 

 

 

 

3-phase 220-230, 380, 400V

 

 

 

 

 

 

 

 

 

Maximum electric power consumption; 600VA

 

3

KE-430B, 430C series

1. SPECIFICATIONS

 

1

 

Medium materials

 

 

 

 

 

 

 

 

2

 

Heavy materials

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-436C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-434C

 

KE-435C

Electronic lockstitch

 

 

KE-484C

 

 

 

 

 

Electronic lockstitch

pattern tacker

 

 

Electronic lockstitch

 

 

 

 

Electronic lockstitch

 

 

 

 

 

 

 

 

pattern tacker

with stepping foot

 

 

pattern tacker

 

 

 

 

pattern tacker

 

 

 

 

 

 

 

 

with stepping foot

and programming

 

 

with treble hook

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

function

 

 

 

Stitch formation

 

 

Single needle lock stitch

 

 

 

 

 

 

 

 

 

 

 

 

Maximum sewing speed

 

 

2,500 rpm (Pitch 3 mm)

 

 

 

2,200 rpm

 

 

 

 

 

(Pitch 3 mm)

 

 

 

 

 

 

 

 

 

 

Maximum pattern size

 

 

100 60 mm max.

 

 

R- intermittent feed mechanism (pulse-motor driven mechanism)

Feed mechanism

 

 

 

 

 

 

 

Stitch length

 

 

0.1 - 10.0 mm

 

 

 

 

 

 

 

 

Number of stitches

 

 

Variable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20,000 stitches

Maximum stitch number

20,000 stitches (including 10,000 stitches

20,000 stitches

 

 

(including 10,000

which can be added)

(One pattern)

 

 

stitches which can

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

be added)

Work clamp lifter

Solenoid type or

 

 

Pneumatic type

 

pneumatic type

 

 

 

 

 

 

 

 

 

 

 

 

 

Work clamp height

17

mm max. (for solenoid), 25 mm max. (for pneumatic)

 

 

(Max. 17 mm for inner clamping device)

 

 

 

 

 

 

 

 

Rotary hook

Shuttle hook (shuttle hook 2, optional)

 

 

Treble hook

Wiper device

 

 

Standard equipment

 

 

 

 

 

 

 

 

Thread trimmer device

 

 

Standard equipment

 

 

 

 

 

 

 

 

Thread take-up device

 

 

Standard equipment

 

 

 

 

 

 

 

 

Stepping foot lift amount

 

 

18 mm

 

 

Stepping foot stroke

 

 

0 mm, 3 - 8 mm

 

 

Safety device

 

 

built-in stopping mechanism

 

 

 

 

 

P-ROM (Any sewing pattern can be added

3.5 floppy disk

 

P-ROM (Any sewing

Data storage method

 

pattern can be

using PS-3000.)

2HD/1.44MB, 2DD

 

added using

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PS-3000.)

Number of user programs

 

16

 

 

 

16

 

 

 

 

 

 

 

Number of cycle programs

 

4

 

 

 

4

 

 

 

 

 

 

 

Number of stored data

 

(*)

 

 

 

(*)

 

 

 

 

 

 

 

 

Motor

 

 

 

Three-phase 400W induction motor

 

 

 

 

 

Machine head: 56 kg, Operation panel: 0.6 kg (2.8 kg: KE-436C),

Weights

 

 

 

Control box: 9 - 19 kg (depending on destination)

 

 

 

 

 

 

 

 

 

 

 

 

 

Single-phase 110, 220 - 230, 240V

 

Power source

 

 

3-phase 220-230, 380, 400V

 

 

 

 

 

 

 

Maximum electric power consumption; 600VA

 

* Up to 100 patterns can be added. Total number of stitches of stored data which can be added is within 10,000.

KE-430B, 430C series

4

1. SPECIFICATIONS

- . Standard thread tension

[KE-430B, 430C, 431B, 431C, 432B, 432C, 433B, 434B, 434C, 435B, 435C, 436B, 436C]

 

Medium materials

 

Heavy materials (Denim)

Knitted materials

Use

(Ordinary materials)

 

 

 

 

 

 

 

 

Standard hook

 

Large hook

 

Standard hook

Large hook

Standard hook

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper thread

#50 or

 

 

#30 or

 

#60 or equivalent

equivalent

 

 

equivalent

 

 

 

 

 

 

 

 

 

 

Lower thread

#60 or

 

 

#50 or

 

#80 or equivalent

equivalent

 

 

equivalent

 

 

 

 

 

 

 

 

 

 

Upper thread tension

0.8 - 1.2

 

1.0 - 1.3

 

1.2 - 1.6

 

 

1.4 - 1.8

 

0.8 - 1.2

(N)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lower thread tension

0.2 - 0.3

 

 

0.2 - 0.3

 

 

0.25 - 0.3

(N)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thread take-up

 

 

 

 

 

 

 

 

 

 

 

spring height

6 - 8

 

 

6 - 8

 

 

6 - 8

(mm)

 

 

 

 

 

 

 

 

 

 

 

Thread take-up

 

 

 

 

 

 

 

 

 

 

 

spring tension

0.3 - 0.4

 

 

0.5 - 0.6

 

 

0.3 - 0.4

(N)

 

 

 

 

 

 

 

 

 

 

 

Pre-tension (N)

0.5 - 0.8

 

 

0.3 - 0.5

 

 

0.5 - 0.8

Needle

DP×5 14

 

 

DP×17NY 19

DP×5 9

[BE-438B, 438C, KE-484C]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

BE-438B

 

 

 

BE-438C

 

 

KE-484C

 

 

 

 

 

 

 

 

 

Needle

TQ×1 12

 

 

TQ×1 12

 

DP×17NY 12

 

DP×17 25

Upper thread

#60 or equivalent

 

 

#60 or equivalent

 

#4 or equivalent

 

 

 

 

 

 

 

Lower thread

#60 or equivalent

 

 

#60 or equivalent

 

#4 or equivalent

 

 

 

 

 

 

 

 

 

 

 

 

Upper thread tension

0.7 - 1.3

 

 

 

0.7 - 1.3

 

 

0.7 - 1.5

 

4.5 - 5.0

(N)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lower thread tension

0.3 - 0.4

 

 

 

0.3 - 0.4

 

 

1.0 - 1.2

(N)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thread take-up

 

 

 

 

 

 

 

 

 

 

 

spring height

6 - 8

 

 

 

6 - 8

 

 

 

0 - 5

(mm)

 

 

 

 

 

 

 

 

 

 

 

Thread take-up

 

 

 

 

 

 

 

 

 

 

 

spring tension

0.4 - 0.6

 

 

 

0.4 - 0.6

 

 

2.0 - 2.5

(N)

 

 

 

 

 

 

 

 

 

 

 

Pre-tension (N)

0.1 - 0.3

 

 

 

0.1 - 0.3

 

 

0.05 - 0.3

 

0.3 - 0.5

5

KE-430B, 430C series

1. SPECIFICATIONS

- - . Measuring tension

Upper thread tension

Lower thread tension

3564Q

 

3565Q

Thread take-up spring height

 

Thread take-up spring tension

 

 

1–2 mm

 

Measure the value when the thread take-up

 

3566Q

spring starts to extend.

3567Q

*When the spring height (stroke) is great or the spring tension is insufficient, it may cause the thread end length to vary after thread trimming.

KE-430B, 430C series

6

2. MECHANICAL DESCRIPTIONS

. MECHANICAL DESCRIPTIONS

The mechanisms operate in the order of the numbers given in the illustrations.

- . Needle bar and thread take-up mechanisms

With stepping foot

 

1. Pulley

<3> Stepping foot connecting rod

2. Upper shaft

<4> Stepping foot arm

3. Thread take-up crank

<5> Stepping link assy

4. Needle bar crank

<6> Presser bar lifter

5. Needle bar connecting rod

<7> Stepping foot

6. Needle bar clamp

 

7. Needle bar

3240Q

7

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

KE-484C

1. Pulley

2. Upper shaft

3. Thread take-up crank

4. Needle bar crank

5. Needle bar connecting rod

6. Needle bar clamp

7. Needle bar

3241Q

KE-430B, 430C series

8

2. MECHANICAL DESCRIPTIONS

- . Lower shaft and shuttle race mechanisms

 

1. Pulley

 

2. Upper shaft

 

3. Crank rod assy

 

4. Rock gear

 

5. Lower gear

 

6. Lower shaft

 

7. Driver

3242Q

8. Shuttle hook

KE-484C

1.Pulley

2.Upper shaft

3.Timing pulley

4.Timing belt

5.Tension pulley arm

6.Lower shaft timing pulley

7.Lower shaft

8.Lower gear

9.Rotary hook shaft 10.Treble hook assy

3243Q

9

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

- . Work clamp lifter mechanism

3244Q

1.Work clamp solenoid

2.Plunger

3.Link assy, C

4.Link shaft, B

5.Link, B

6.Link shaft, C

7.Work clamp plate

8.Work clamp arm lever plate

9.Work clamp arm lever shaft 10.Work clamp arm lever 11.Work clamp

*When the presser solenoid is turned off, the presser plate rises, and work clamps lower.

 

 

 

 

 

 

 

 

 

 

 

 

 

KE-432B, 432C

 

 

 

 

 

BE-438B, 438C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.

Work clamp lifting rod

7.

Work clamp lifting rod

8.

Work clamp lifter lever

8.

Button clamp lifting lever

9.

Presser adjusting plate assy

9.

Button clamp holder hook assy

10.

Button clamp holder shaft

10.

Button clamp holder shaft

11.

Work clamp

11.

Button clamp

3266Q

 

 

 

 

 

 

 

 

3267Q

KE-430B, 430C series

10

2. MECHANICAL DESCRIPTIONS

3245Q

Pneumatic specifications

1. Air cylinder

2. Work clamp arm lever shaft

3. Work clamp arm lever

4. Work clamp

11

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

- . Work clamp open-close mechanism (KE-432B, 432C)

1. Solenoid assy

2. OY solenoid pin

3. Sensor plate

3262Q 4. Work clamp carrier rod assy

5. Lever

6. Roller

7. Work clamp carrier plate

8. Work clamp guide plate

9. Screw 10.Work clamp

KE-430B, 430C series

12

Brother KE-434B, 435C, 431B, 434C, 432C User Manual

2. MECHANICAL DESCRIPTIONS

- . Thread wiper mechanism

3246Q

When the presser solenoid is turned off, the presser plate rises, and thread wiper operates in the opposite direction.

1. Work clamp solenoid

2. Plunger

3. Link assy, C

4. Link shaft, B

5. Thread wiper driving lever

6. Thread wiper rod assy

7. Thread wiper arm assy

8. Thread wiper

Solenoid type thread wiper

3247Q

 

1. Thread wiper solenoid

2. Thread wiper connecting rod assy

3. Thread wiper arm assy

4. Thread wiper

13

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

Stepping foot specifications

1. Thread wiper solenoid

2. Thread wiper connecting rod assy

3. Thread wiper arm assy

4. Thread wiper

3248Q

KE-484C

1. Thread wiper cylinder

2. Thread wiper connecting rod lever

3. Thread wiper connecting rod

4. Thread wiper arm assy

5. Thread wiper

3249Q

KE-430B, 430C series

14

2. MECHANICAL DESCRIPTIONS

- . Feed mechanism

Sewing patterns are created through combinations of X and Y movements.

KE-430B, 431B, 432B, 433B, BE-438B

KE-430C, 431C, 432C, BE-438C

X direction

3250Q

Y direction

3251Q

1.Pulse motor, X

2.Coupling hub, 6.35

3.Coupling spacer

4.Coupling hub, 8

5.Feed cam, X

6.Feed cam roller

7.X-feed lever

8.Tack length regulator block assy

9.Feed bracket

1.Pulse motor, Y

2.Coupling hub, 6.35

3.Coupling spacer

4.Coupling hub, 8

5.Feed cam, Y

6.Feed cam roller

7.Y-feed lever

8.Tack width feed shaft

9.Feed bracket

15

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

KE-434B, 435B, 436B

KE-434C, 435C, 436C, 484C

X direction

3252Q

Y direction

3253Q

1.Pulse motor, X

2.Coupling hub, 8

3.Coupling spacer

4.Coupling hub, 8

5.Feed cam, X

6.Feed cam roller

7.X-feed lever

8.Tack length regulator block assy

9.Feed bracket

1.Pulse motor, Y

2.Coupling hub, 8

3.Coupling spacer

4.Coupling hub, 8

5.Feed cam, Y

6.Feed cam roller

7.Y-feed lever

8.Tack width regulator block assy

9.Feed bracket

KE-430B, 430C series

16

2. MECHANICAL DESCRIPTIONS

- . Thread trimmer mechanism

1. Thread trimmer solenoid

2. Driving lever push lever

3. Thread driving lever

3254Q 4. Thread trimmer roller

5. Thread trimmer cam

6. Thread trimmer rod

7. Thread trimmer lever

8. Connecting rod lever assy

9. Thread trimmer connecting rod

10. Movable knife

11. Fixed knife

17

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

KE-484C

1. Thread trimmer solenoid

2. Driving lever push lever

3. Thread driving lever

4. Thread trimmer roller

5. Thread trimmer cam

6. Thread trimmer rod

7. Thread trimmer lever

8. Thread trimmer rod, L

9. Thread trimmer connecting rod

10. Movable knife

11. Thread trimmer cylinder

12. Extension rod

13. Fixed knife

3255Q

KE-430B, 430C series

18

2. MECHANICAL DESCRIPTIONS

- . Thread nipper mechanism

Manual operation

1. Lifting lever

2. Lifting crank

3. Tension release lever

4. Tension release stud

5. Tension release pin

3256Q

In thread trimming

3257Q

1. Thread trimmer solenoid

7.

Tension release driving lever

2. Driving lever push lever

8.

Tension release lever, U

3. Thread driving lever

9.

Tension release rod assy

4. Tension release driving lever

10.

Tension release lever

5. Lower thread retainer collar

11.

Tension release stud

6. Thread trimmer cam

12.

Tension release pin

19

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

KE-484C

1. Tension release cylinder

2. Tension release pin push lever

3. Tension release pin, L

4. Tension release pin

3258Q

KE-430B, 430C series

20

2. MECHANICAL DESCRIPTIONS

- . Thread take-up mechanism

3259Q

Stepping foot specifications

1. Thread take-up solenoid

2. Solenoid joint

3. Thread take-up lever crank

4. Thread take-up lever

3260Q

3261Q

KE-484C

1. Thread take-up cylinder

2. Thread take-up lever

21

KE-430B, 430C series

3. DISASSEMBLY

. DISASSEMBLY

CAUTION

Disassembly should only be carried out by a qualified technician.

Turn off the power switch before disassembly, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result.

Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhea.

Keep the oil out of the reach of children.

Disassemble each part in order of the numbers.

- . Covers

KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C

Disconnect the air hoses from the air supply and wait for the needle on the pressure gauge to drop to “0” before disassembly of any parts which use the pneumatic equipment.

Use only the proper replacement parts as specified by Brother.

If any safety devices have been removed, be absolutely sure to re-install them to their original positions and check that they operate correctly before using the machine.

Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty.

3269Q

1. Top cover

2. Belt cover

3. Frame side cover

4. Bed cover, LF

5. Bed cover, LR

6. Bed cover, R

7. Eye guard assy

8. Face plate assy

9. Shuttle race cover assy

3268Q

KE-430B, 430C series

22

3. DISASSEMBLY

KE-434B, 435B, 436B KE-434C, 435C, 436C, 484C

<KE-435B, 435C> <KE-436B, 436C>

3269Q

3270Q

1.Top cover

2.Belt cover

3.Frame side cover

4.Bed cover, LF

5.Bed cover, LR

6.Bed cover, R

7.Eye guard assy

8.Bolts [2 pcs]

9.Face plate assy

10.Shuttle race cover assy

11.Auxiliary plate supports [2 pcs]

12.Needle plate auxiliary plate

13.Auxiliary plate supports [4 pcs]

23

KE-430B, 430C series

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