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

KE-430B, 430C, 431B, 431C KE-432B, 432C, 433B KE-434B, 434C, 435B, 435C KE-436B, 436C, 484C

SERVICE MANUAL

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.

CAUTION

Symbols

･･････

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

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

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.

DANGER

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.

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 connec-

tion is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.

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.

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 operators who have received the necessary training in safe use beforehand.

The sewing machine should not be used for any applications other than sewing.

Be sure to wear protective goggles when using the machine. If goggles are not worn, there is the danger that if a needle breaks, parts of the broken needle may enter your eyes and injury may result.

Set the needle to the needle up stop position before turning off the power. If this is not done, the wiper may strike the needle, which might cause the needle to break.

Turn off the power switch at the following times, otherwise the machine may operate if the foot switch 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 turning off the power. If this is not done, the wiper may strike the needle, which might cause the needle to break.

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

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

Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.

Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in personal injury or damage to the machine.

If an error occurs in machine operation, or if abnormal noises or smells are noticed, immediately turn off the power switch. Then contact your nearest Brother dealer or a qualified technician.

If the machine develops a problem, contact your nearest Brother dealer or a qualified technician.

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.

Maintenance and inspection

Maintenance and inspection of the sewing machine should only be carried out by a qualified technician.

Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system.

Set the needle to the needle up stop position before turning off the power. If this is not done, the wiper may strike the needle, which might cause the needle to break.

Turn off the power switch and disconnect the power cord from the wall outlet at the following times, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.

 When carrying out inspection, adjustment and main-

tenance

 When replacing consumable parts such as the ro-

tary hook

Disconnect the air hoses from the air supply and wait for the needle on the pressure gauge to drop to “0” before carrying out inspection, adjustment and repair of any parts which use the pneumatic equipment.

If the power switch and air need to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions.

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.

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.

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

3

High temperature warning display

Safety devices

Eye guard Finger guard 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

e guard

Ey

Thread take-up solenoid cover

Belt cover

2670Q

Finger guard

KE-430B KE-430C

KE-430B, 430C series

2737Q

iv

１. SPECIFICATIONS

１-１. SPECIFICATIONS

1

Ordinary materials 2

5 2 Denim 7 Knitted materials

Stitch formation Single needle lock stitch Maximum sewing speed Maximum pattern size Feed mechanism Stitch length Number of stitches Maximum stitch number 20,000 stitches (including 10,000 stitches which can be added) Work clamp lifter Solenoid type Work clamp height Rotary hook Shuttle hook (shuttle hook 2, optional)

Electronic lockstitch

Bar tacking length

3

KE-430B

bar tacker

6 -14 mm

14 - 25 mm

30 10 mm max. 12 3 mm max. 30 30 mm max. R- intermittent feed mechanism (pulse-motor driven mechanism)

KE-431B

Electronic lockstitch

belt loop bar tacker

2,700 rpm 2,500 rpm

0.1 - 10.0 mm

17 mm max.

KE-432B

Electronic lockstitch

eyelet buttonhole

end bar tacker

Variable

1 Ordinary materials 2 Denim 7 Knitted materials

Electronic lockstitch

decorative pattern

KE-433B

tacker

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 Number of cycle programs

35 sewing patterns are

Number of stored data

Motor Three-phase 400W induction motor Weights

Power source

set already

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

6 sewing patterns are

set already

which can be added is within 10,000.)

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

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

Single-phase 110, 220 - 230, 240V

3-phase 220-230, 380, 400V

Maximum electric power consumption; 600VA

16

4

3 sewing patterns are

set already

1

KE-430B, 430C series

1 Medium

materials

2 Heavy materials

KE-436B

KE-434B

Electronic lockstitch

pattern tacker

KE-435B

Electronic lockstitch

pattern tacker

with stepping foot

Electronic lockstitch

pattern tacker with stepping foot and programming

function

Stitch formation Single needle lock stitch

1. SPECIFICATIONS

BE-438B

Electronic lockstitch

button sewer

Maximum sewing speed Maximum pattern size 100 60 mm max.

2,500 rpm (Pitch 3 mm) 2,500 rpm

0 - 6.4 0 - 6.4 mm Feed mechanism R- intermittent feed mechanism (pulse-motor driven mechanism) Stitch length Number of stitches

0.1 - 10.0 mm Variable

20,000 stitches

Maximum stitch number

20,000 stitches (including 10,000 stitches

which can be added)

20,000 stitches

(One pattern)

(including 10,000

stitches which can

be added)

Work clamp lifter Work clamp height Rotary hook

Solenoid type or

pneumatic type

Pneumatic type Solenoid type

17 mm max. (for solenoid)

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

Shuttle hook (shuttle hook 2, optional)

13 mm max.

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

using PS-3000.)

3.5 floppy disk

2HD/1.44MB, 2DD

pattern can be

added using

PS-3000.)

Number of user programs Number of cycle programs

16

4

16

4

49 sewing patterns are

set already

Number of stored data

(*)

Motor Three-phase 400W induction motor Weights

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

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

(*)

2

1. SPECIFICATIONS

1 Ordinar

y materials

2 Denim

Knitted materials

7

Bar tacking length

2

Bar tacking length

3

6 -14 mm

14 -25 mm

KE-430C

Electronic lockstitch

bar tacker

KE-431C

Electronic lockstitch

belt loop bar tacker

KE-432C

Electronic lockstitch

eyelet buttonhole

end bar tacker

Electronic lockstitch

Stitch formation Single needle lock stitch Maximum sewing speed Maximum pattern size Feed mechanism Stitch length Number of stitches

30 26 mm max. 30 10 mm max. 12 3 mm max. 0 - 6.4 0 - 6.4 mm

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

2,700 rpm 2,500 rpm

0.1 - 10.0 mm 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)

BE-438C

button sewer

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 Number of cycle programs

Number of stored data

61 sewing patterns are

set already

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

6 sewing patterns are

set already

16

4

3 sewing patterns are

set already

49 sewing patterns are

which can be added is within 10,000.)

Motor Three-phase 400W induction motor Weights

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

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

set already

3

KE-430B, 430C series

1. SPECIFICATIONS

1 Medium 2 Heavy materials

Stitch formation Single needle lock stitch Maximum sewing speed Maximum pattern size 100 60 mm max.

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

materials

KE-434C

Electronic lockstitch

pattern tacker

KE-435C

Electronic lockstitch

pattern tacker

with stepping foot

2,500 rpm (Pitch 3 mm)

KE-436C

Electronic lockstitch

pattern tacker with stepping foot and programming

function

Electronic lockstitch

pattern tacker

with treble hook

KE-484C

2,200 rpm

(Pitch 3 mm)

Stitch length Number of stitches

0.1 - 10.0 mm Variable

20,000 stitches

Maximum stitch number

20,000 stitches (including 10,000 stitches

which can be added)

20,000 stitches

(One pattern)

(including 10,000

stitches which can

be added)

Work clamp lifter Work clamp height Rotary hook Shuttle hook (shuttle hook 2, optional)

Solenoid type or

pneumatic type

Pneumatic type

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

(Max. 17 mm for inner clamping device)

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

Data storage method

P-ROM (Any sewing pattern can be added

using PS-3000.)

3.5 floppy disk

2HD/1.44MB, 2DD

pattern can be

added using

PS-3000.)

Number of user programs Number of cycle programs

16

4

16

4

Number of stored data (*)

Motor Three-phase 400W induction motor Weights

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

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

１-２. Standard thread tension

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

Use

Upper thread Lower thread

Upper thread tension

(N)

Lower thread tension

(N)

T hread take-up

spring height

(mm) Thread take-up s pring tension

(N)

Pre-t (N) ension

Medium materials

(Ordinary materials)

Standard hook Large hook Standard hook Large hook Standard hook

#50 or

equivalent

#60 or

equivalent

0.8 - 1.2 1.0 - 1.3 1.2 - 1.6 1.4 - 1.8 0.8 - 1.2

0.2 - 0.3

6 - 8

0.3 - 0.4

0.5 - 0.8

← ←

←

Heavy materials (Denim) Knitted materials

#30 or

equivalent

#50 or

equivalent

0.2 - 0.3

6 - 8

0.5 - 0.6

0.3 - 0.5

← #60 or equivalent ← #80 or equivalent

←

0.25 - 0.3

6 - 8

0.3 - 0.4

0.5 - 0.8

Needle

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

Model BE-438B BE-438C KE-484C

Needle

Upper thread #60 or equivalent #60 or equivalent #4 or equivalen t Lower thread

Upper thread tension Lo n

T hread take-up

T spring tension

Pre-tension (N)

(N)

wer thread tensio

(N)

spring height

(mm)

hread take-up

(N)

DP×5＃14 ← DP×17NY＃19 ← DP×5＃9

TQ×1＃12 TQ×1＃ NY＃12 12 DP×17 DP×17＃25

#60 or equivalent or equivale #4 or equivalent #60 nt

0.7 - 1.3 0.7 - 1.3 0.7 - 1.5 4.5 - 5.0 0 0 1

.3 - 0.4 .3 - 0.4 .0 - 1.2

6 - 8 6 - 8 0 - 5

0.4 - 0.6 0.4 - 0.6 2.0 - 2.5

0.1 - 0.3 0.1 - 0.3 0.05 - 0.3 0.3 - 0.5

5

KE-430B, 430C series

1. SPECIFICATIONS

１-２-１. Measuring tension

Upper thread tension Lower thread tension

3564Q 3565Q

Thread take-up spring height Thread take-up spring tension

3566Q

1–2 mm

Measure the value when the thread take-up 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

２. MECHANICAL DESCRIPTIONS ２. MECHANICAL DESCRIPTIONS

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

２-１. Needle bar and thread take-up mechanisms ２-１. Needle bar and thread take-up mechanisms

With stepping foot

3240Q 40Q

7

<3> Stepping foot connecting rod <4> Stepping foot arm <5> Stepping link assy <6> Presser bar lifter <7> Stepping foot

KE-430B, 430C series

1. Pulley

2. Upper shaft

3. Thread take-up crank

4. Needle bar crank

5. Needle ba r conne cting ro d

6. Needle bar clamp

7. Needle bar

KE-484C

3241Q 41Q

2. MECHANICAL DESCRIPTIONS

1. Pulley

2. Upper shaft

3. Thread take-up crank

4. Ne

edle bar crank

5. Needle ba r conne cting ro d

6. Needle bar clamp

7. Needle bar

KE-430B, 430C series

8

2. MECHANICAL DESCRIPTIONS

２-２. Lower shaft and shuttle race mechanisms ２-２. Lower shaft and shuttle race mechanisms

3242Q Q

KE-484C

1. Pulley

2. Upper shaft

3. Timing pulley

4. Timing belt

5. Tensi on pulley arm

6. Lower shaft timing pulley

7. Lower shaft

8. Lower gear

9. Rotary hook shaft 1

0.Treble hook assy

1. Pulley

2. Upper shaft

3. Cra

nk rod assy

4. Rock gear

5. Lower gear

6. Lower shaft

7. Driver

8. Shuttle hook

3243

Q3243Q

9

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

２-３. Work clamp lifter mechanism

1. Work clam p solenoi d

2. Plunger

3. Link assy, C

4. Link shaft, B

5. Link, B

6. Link shaft, C

7. Work clam p plate

8. Work clamp a rm lever plate

9. Work clamp a rm lever shaft

10.Work clamp arm lever

11.Work clamp

* When the presser solenoid is turned off, the

presser plate rises, and work clamp s lo wer.

KE-432B, 432C BE-438B, 438C

3266Q 3267Q

7. Work

clamp lifting rod

8. Work clamp lifter lever

9. Presser adjusting plate assy

10. Button clamp holder shaft

11. Work clamp

7. Work

clamp lifting rod

8. Button clamp lifting lever

9. Button clamp holder hook assy

10. Button clamp holder shaft

11. Button clamp

3244

Q

KE-430B, 430C series

10

2. MECHANICAL DESCRIPTIONS

Pneumatic specifications

3245Q45Q

1. Air cylinder

2. Work clamp a rm lever shaft

3. Work clam p arm leve r

4. Work clamp

11

KE-430B, 430C series

2. MECHANICAL DESCRIPTIONS

２-４. Work clamp open-close mechanism (KE-432B, 432C)

3262Q

1. Solenoid assy

2. OY solenoid pin

3. Sensor plate

4. Work cla mp c arri er ro d as sy

5. Lever

6. Roller

7. Work clam p carrier plat e

8. Work clam p guid e plate

9. Screw

10.Work clamp

KE-430B, 430C series

12

2. MECHANICAL DESCRIPTIONS

２-５. Thread wiper mechanism ２-５. Thread wiper mechanism

Solenoid type thread wiper

3246Q3246Q

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

1. Work clam p solenoi d

2. Plun

ger

3. Link assy, C

4. Link shaft, B

5. Thread wi pe r drivin g lever

6. Thread wi pe r ro d assy

7. Thread wi pe r arm assy

8. Thread wiper

3247QQ

1. Thread wi pe r so le noid

2. Thread wi pe r co nne cting rod as sy

3. Thread wi pe r arm assy

4. Thread wiper

13

KE-430B, 430C series

Stepping foot specifications

3248Q Q

KE-484C

3249Q 3249Q

2. MECHANICAL DESCRIPTIONS

1. Thread wi pe r so le noid

2. Thread wi pe r co nne cting rod as sy

3. Thread wi pe r arm assy

4. Thread wiper

1. Thread wi pe r cyli nd er

2.

Thread wiper connecting rod lever

3. Thread wi pe r co nne cting rod

4. Thread wi pe r arm assy

5. Thread wiper

KE-430B, 430C series

14

2. MECHANICAL DESCRIPTIONS

２-６. Feed mechanism

Sewing patterns are created through combination s 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 d cam, Y

5. Fee

6. Feed cam roller

7. Y-feed lever

8. Tack width feed shaft

9. Feed bracket

15

KE-430B, 430C series

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

X direction

Y direction

2. MECHANICAL DESCRIPTIONS

1. Pulse motor, X

2. Coupling hub, 8

3. Coupling spacer

3252Q

4. Coupling hub, 8

5. Feed cam, X

6. Feed cam roller

7. X-feed lever

8. Tack length regulator block assy . Feed bracket

9

1. Pulse motor, Y

2. Coupling hub, 8

3. Coupling spacer

4. Coupling hub, 8

3253

Q

5. Feed cam, Y

6. Fee

d cam roller

7. Y-feed lever

8. Tack width regulator block assy

9. Feed bracket

KE-430B, 430C series

16

2. MECHANICAL DESCRIPTIONS

２-７. Thread trimmer mechanism

3254Q

1. Thread trimmer solenoid

2. Driving lev er push lever

3. Thread driving lever

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

KE-484C

3255Q

2. MECHANICAL DESCRIPTIONS

1. Thread trimmer solenoid

2. Driving lev er 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

KE-430B, 430C series

18

2. MECHANICAL DESCRIPTIONS

２-８. Thread nipper mechanism

Manual operation

In thread trimming

3256Q

1. Thread trimmer solenoid

2. Driving lev er push lever

3. Thread driving lever

4. Tension release driving lever

5. Lower thread retainer collar

6. Thread trimmer cam

1. Lifting lever

2. Lifting crank

3. Tensi on release lever

4. Tension release stud

5. Tension release pin

3257Q

7. Tension release driving lever

8. Tension release lever, U

9. Tension release rod assy

10. Tension release lever

11. Tension release stud

12. Tension release pin

19

KE-430B, 430C series

KE-484C

3258Q

2. MECHANICAL DESCRIPTIONS

1. Tension release cylinder

2. Tensio n release pin push leve r

3. Tensio n release pin, L

4. Ten

sion release pin

KE-430B, 430C series

20

2. MECHANICAL DESCRIPTIONS

２-９. Thread take-up mechanism

Stepping foot specifications

KE-484C

3260

3259Q

1. Th

read take-up solenoid

2. Solenoid joint

3. Thread take-up lever crank

4. Thread take-up lever

Q

3261Q

1. Thread take-up cylinder

2. Thread take-up lever

21

KE-430B, 430C series

３. DISASSEMBLY

3. DISASSEMBLY

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.

３-１. Covers

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

CAUTION

3268Q

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.

3269

1. Top cover

2. Belt cover

3. Frame side cover

4. Bed cover, L F

5. Bed cover, L R

6. Bed cover, R

7. Eye guard assy

8. Face plate assy

9. Shuttle race cover assy

Q

KE-430B, 430C series

22

3. DISASSEMBLY

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

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

3269Q

1. Top

cover

3270Q

2. Belt cover

3. Frame side cover

4. Bed cover, L F

5. Bed cover, L R

6. Bed cover, R

7. Eye guard assy

8. B o lt s [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

３-２. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C)

1. Set screw

2. Needle

3. Needle ba r thre ad gui de

4. B o lt s [2 pcs]

5. Work clamp arm assy

6. Work clamp felt

7. Screws [2 pcs]

8. Feed plate

Be careful not to drop these two bearing balls when removing the feed bracket assembly.

9. Rubber cap

10. Set screw [Loosen]

11. Tack width feed shaft

12. Rod end

13. Screws [8 pcs]

14. Feed bracket guide plate

15. Feed bracket assy

16. Flat screws [2 pcs]

17. S

crews [2 pcs]

18. Ne

edle plate

Be careful not to drop these three bearing balls when removing the work clamp arm assembly.

Remove the feed bracket guide plate and the feed bracket assembly together as a single unit.

3. DISASSEMBLY

3271Q

3272

Q

KE-430B, 430C series

24

3. DISASSEMBLY

３-３. Work clamp arm mechanism (KE-432B, 432C)

Be careful not to drop these two bearing balls

en removing the feed bracket assembly.

wh

1. Set screw

2. Ne

edle

3. Needle ba r thre ad gui de

4. Bolt

5. Nuts [2 pcs] Adjusting screw Compression spring [Push upward and remove horizontally]

6. Set screw s [2 pcs: Loosen]

7. Button c

lamp holder shaft

8. Work clamp arm assy

9. Bolts [2 pcs]

10. Button clamp holder support

11. Work clamp felt

12. Screws [2 pcs]

13. Feed plate

14. Rubber cap

15. Set screw [Loosen]

3273

Remove the feed bracket guide plate and the feed bracket assembly together as a single unit.

3274Q

16. T

ack width feed shaft

17. Rod end

18. Screws [8 pcs]

19. Feed bracket guide plate

20. Feed bracket assy

21. Flat screws [2 pcs]

22. Screws [2 pcs]

23. Needle plate

Q

25

KE-430B, 430C series

３-４. Work clamp arm mechanism (KE-433B)

Q

3275

9. Rubber cap

10. Set screw [Loosen]

11. Tack width feed shaft

12. Screws [8 pcs]

13. Feed bracket guide plate [Pull upward]

14. Screw

15. Cover support stand

16. Feed bracket cover

17. Set

18. Tack length regulator block

19. Feed bracket guide shaft assy

20. Retainer assys [2 pcs]

21. Spacers [2 pcs]

22. Feed bracket assy

23. X fe

24. Y feed cover

25. Flat screws [2 pcs]

26. Screws [2 pcs]

27. Needle plate

screw [Loosen]

[Pull out]

ed cover

Be careful not to drop these three bearin g balls when removing the work clamp arm assembly.

3. DISASSEMBLY

1. Set screw edle

2. Ne

3. Needle ba r thre ad gui de

4. B o lt s [2 pcs]

5. Work clamp arm assy

6. Work clamp felt

7. B o lt s [2 pcs]

8. Feed plate

Remove the feed bracket guide plate as a single assembly with the feed bracket and other parts still assembled.

Be careful not to drop the two bearing balls wh

en removing the feed bracket guide shaft

assembly.

3276Q

KE-430B, 430C series

26

3. DISASSEMBLY

３-５

. Work clamp arm mechanism (KE-434B, 434C, 435B, 435C, 436B, 436C, 484C)

KE-434B, 434C Solenoid specification

3277Q

1. Set screw

2. Ne

edle

3. Needle ba r thre ad gui de

4. Bolts [2 pcs: pneum ati c spec. only]

5. Cylinder support [pneumatic spec. only]

6. B o lt s [2 pcs]

7. Work clam p arm assy

8. B o lt s [2 pcs]

9. Feed plate

10. Feed bracket cover

27

KE-430B, 430C series

11. Rubber cap

12. Set

13. Tack length regulator block assy

14. Retainer assys [2 pcs]

15. Spacers [2 pcs]

16. Screws [2 pcs]

17. Flat screws [2 pcs]

18. Feed bracket guide plate, R

19. Feed bracket assy

20. X-feed lever cover

21. Flat screws [2 pcs]

22. Screws [2 pcs]

23. Needle plate

screw [Loosen]

3279Q

Tack width regulator block assy

-feed lever

Y

3. DISASSEMBLY

3278Q

1) Turn the Y-feed lever forward as far as it will go.

2)

Lift up feed bracket guide plate R and the feed bracket assembly together, remove the tack width regulator block assembly from the Y-feed lever, and pull all of them forward to remove them.

KE-430B, 430C series

28

3. DISASSEMBLY

３-６. Work clamp arm mechanism (BE-438B, 438C)

1. Set screw

2. Ne

3. Needle ba r thre ad gui de

4. Nuts [2 pcs] Adjusting screw Compression spring [Push upward and remove horizontally]

5. Set screw s [2 pcs: Loosen]

6. Button clam p hol der sh aft

Be careful not to drop these two bearing balls when removing the feed bracket assembly.

7. Butto

edle

8. Bolts [2 pcs]

9. Button clamp holder support

10. Work clamp felt

11. Screws [2 pcs]

12. F

13. Ru

14. Set screw [Loosen]

n clamp holder

eed plate

bber cap

3280Q

3281

Remove the feed bracket

de plate and the feed

gui bracket assembly together as a single unit.

15. Tack width feed shaft

16. Rod end

17. Screws [8 pcs]

18. Feed bracket guide plate

19. Feed bracket assy

20. Fl

at screws [2 pcs]

crews [2 pcs]

21. S

22. Needle plate

Q

29

KE-430B, 430C series

３-７. Shuttle hook mechanism

KE-484C

3. DISASSEMBLY

3282Q

1. Bobbin case assy

2.

Shuttle race base setting claw [Open to right and left]

3. Shuttle race base

4. Shuttle hook

1. Bobbin case assy

2. Screw

3. Hook stopper setting base

4. Set screw [Loosen]

5. Treble hook assy

3283

Q

KE-430B, 430C series

30

3. DISASSEMBLY

３-８. Needle bar mechanism

Q

3286Q

Do not remove the needle bar guide if possible to preve bar rubbing.

3284

nt the machine from overheating due to needle

Q

3285

1. Rubber cap

2. Screw

3. Needle bar

4. Slide block

5. Needle bar clamp [Pull out]

6. Rubber cap

7. Set screw [Loosen]

8. Wick [Pull out from arm]

9. Thread take-up support shaft

10. Thread take-up support

11. Oil cap

12. Set screw [Loosen]

13. Set screw [Loosen]

14. Ne

edle bar connect-

ing rod

edle bearing

15. Ne

hread take-up lever

16. T

17. Rubber caps [2 pcs]

18. Screws [2 pcs]

19. Needle bar guide

31

KE-430B, 430C series

３-９. Stepping foot mechanism (KE-435B, 435C, 436B, 436C)

3287Q

Note:

Remove the presser adjusting screw gently, as the presser bar spring guide and the presser bar spring may fly out at this time.

Remove the stepping link assembly and the

sser bar lifter together as a single u nit.

pre

1. Screw 2

. Finger guard

3. Presser foot

4. Presse r adj us ting screw

5. Presse r ba r spring gu id e

6. Presse r ba r spri ng

7. Wa

sher

8. Screw [Loosen]

9. Presse r ba r clam p

10. Cushion

11. Presser bar

12. Screws [2 pcs]

13. Stepping link assy

14. Presser bar lifter

15. Nut

16. Feed lifter lever shaft

17. Bolt [Loosen]

18. Stepping foot arm, R

19. Stepping foot arm, F [Pull out]

3. DISASSEMBLY

KE-430B, 430C series

32

3. DISASSEMBLY

３-１０. Upper shaft mechanism

<KE-435B, 435C> <

KE-436B, 436C>

3289Q

3288

1. Screw [Loosen]

2.

Set screw [Loosen]

3. Th

read take-up crank

4. Screws [2 pcs]

5. Thread trimmer solenoid

6. Screw

7. Wick support

8. Screws [2 pcs]

9. Crank rod (Upper pa rt)

10. Cran

k rod (Lower part)

[Lower downward］

11. Set screws [2 pcs: Loosen] <11> Set screws [2 pcs: Loosen]

12. Set screws [2 pcs: Loosen]

13. Motor connector

14. Nut [Loosen]

15. Bolt [Loosen]

16. Bolts [3 pcs]

17. Motor bracket

18. Upper shaft timing belt

19. Set screws [2 pcs: Loosen]

20. Timing pulley assy, U

21. Screws [2 pcs]

22. Syn

chronizer assy

23. Upper shaft

24. Thrust washer

25. Bobbin winder pulley <25> Stepping foot connecting ro d

26. Thread trimmer cam

Q

33

KE-430B, 430C series

KE-484C

1. Screw [Loosen]

2. Set screw [Loosen]

3. Thread take-up crank

4. Screws [2 pcs]

5. Thread trimmer solenoid

6. Belt cover support pillars [2 pcs]

7. Screws [4 pcs]

8. Blind plate

9. Frame side cover

10. Setting plate packing

11. Nut

12. Plain washer

13. Nuts [2 pcs: Loosen]

14. Adjusting screw [Loosen]

15. Adjusting screw [Loosen]

16. Tension pulley arm

17. Set screws [2 pcs: Loosen]

18. Set screws [2 pcs: Loosen]

19. Set screws [2 pcs: Loosen]

20. Motor connector

21. Nut [Loosen]

22. Bolt [Loosen]

23. Bolts [3 pcs]

24. Motor bracket

3. DISASSEMBLY

3290Q

3291Q

25. Upper shaft timing belt

26. Set screws [2 pcs: Loosen]

27. Timing pulley assy, U

28. Screws [2 pcs]

29. Synchronizer assy

30. Upper shaft

31. Thrust washer

32. Bobbin winder pulley

33. Thread trimmer cam

34. U-timing pulley, F

35. U-timing belt, F

KE-430B, 430C series

34

3. DISASSEMBLY

３-１１. Lower shaft mechanism

KE-430C series BE-

438C

1.

Support [Turn in the direction of the arro w] 9. Set screws [2 pcs: Loosen]

2. Felt holder 10. Wick [Untie the knot]

3. Bolt [Loosen] 11. Set screws [2 pcs: Loosen]

4. Driver 12. Rock gear shaft

5. Retaining ring [Pull out from the rear of the machine]

6. Set screw s [2 pcs: Loosen] 13. Set scre w collar

7. Lower shaft assy 14. Rock gear [Pull out from the rear of the machine]

8. Set screw collar

Tilt the machine head.

KE-430B series BE-438B

Remove the rock gear and the

nk rod together as a single unit.

cra

15. Crank rod (Lower part)

3292Q

3293Q

35

KE-430B, 430C series

KE-484C

Note:

This part consists of three smaller parts which should not be disassembled.

3295Q

3. DISASSEMBLY

Tilt the machine head.

1. Set screw [Loosen] wer gear

2. Lo

3. Set screw s [2 pcs: Loosen]

4. Rotary hook shaft

5. Set screw collar

6. Lower shaft gear spacer

7. Thrust bearing

8. Set screw [Loosen]

9. Wick [Untie the knot]

10. Lower shaft

[Pull out from the rear of the machine]

11. Lower shaft timing pulley

12. U-timing belt, F

3294

Q

KE-430B, 430C series

36

3. DISASSEMBLY

３-１２. Feed mechanism (1)

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

3296

Q

If the tack width feed lever shaft cannot be rem

oved, remove the retaining ring.

Oil supply

hole

3298Q

Tilt the machine head.

Retaining

ring

1. Set screw s [2 pcs: Loosen] screw collar

2. Set

3. Set screw [Loosen]

4. Tack width feed lever shaft (with retaining

ring) [Pull upward]

5. Thrust washer

6. Wicks [3 pcs: Pull out from oil supply hole]

7.

Y-feed lever assy [Pull upward]

Thrust washer

8.

9. X-feed lever assy [Pull upward]

10. Screw

11. Home sensor setting plate

12. Screw

13. Cord holder

14. Screw

15. Home sensor setting plate

16. Screw

17. Cord holder

Return the machine head to its original position.

3297Q

37

KE-430B, 430C series

KE-434B, 435B, 436B KE-434C, 4

35C, 436C, 484C

3296

Q

If the tack width feed lever shaft cannot be removed, remove the retaining ring.

Oil supply

hole

3300Q

3. DISASSEMBLY

Tilt the machine head.

Return the machine head to its original position.

Retaining

ng

ri

3299Q

1. Set screw s [2 pcs: Loosen] screw collar

2. Set

3

. Set screw [Loosen]

Tack width feed lever shaft (with retaining

4.

ring) [Pull upward]

5. Thrust washer

6. Wicks [3 pcs: Pull out from oil supply hole]

7. Y-feed lever assy [Pull upward]

8. Thrust washer

9. X-feed lever assy [Pull upward]

10. Screw

11. Y-sensor setting plate

12. Screw

13. X-sensor setting base

crews [3 pcs]

14. S

15. Cord clamps [3 pcs]

KE-430B, 430C series

38

3. DISASSEMBLY

３-１３. Feed mechanism (2)

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

Same for both X and Y

3302Q

Q

3301

1. B o lt s [4 pcs]

2.

Pulse motor assy, X [Disconnect the harness]

3. B o lt s [4 pcs]

4. Pulse m otor assy, Y [Disconnect the harness]

5. Coupling spacer

6. Set screw s [2 pcs: Loosen]

7. Coupling hub, 6.35

8. Screws [2 pcs]

9. Feed cam bracket

10. Positioning pins [2 pcs]

11. Screw

12. Feed home position dog

13. Set screws [2 pcs: Loosen]

14. Coupling hub, 8

15. Set screws [2 pcs: Loosen]

16. Cam shaft

17. Ball bearings [2 pcs]

18. Feed cam

39

KE-430B, 430C series

KE-434B, 435B, 436B KE-434C, 4

35C, 436C, 484C

3. DISASSEMBLY

1.

Bolts [4 pcs] 13. Positioning pins [2 pcs]

3303

3304Q

Q

2. Pulse motor assy, X [Disconnect the harness] 14. Set screws [2 pcs: Loosen]

3. PM bracket, X 15. Coupling hub, 8

4. Ball bearing 16. Coupling spacer

5. Bolts [4 pcs] [3 pcs: KE-484C] 17. Set screws [2 pcs: Loosen]

6. Pulse motor assy, Y [Disconnect the harness] 18. Feed cam

7. Set screw s [2 pcs: Loosen] 19. Ball bearing [X side only]

8. Set screw collar 20. Ball bearing

9. PM bracket, Y 21. Cam shaft

10. Ball bearing 22. Set screws [2 pcs: Loosen]

11. Screws [2 pcs]

23. Coupling hub, 8

12. Y-feed cam bracket

KE-430B, 430C series

40

3. DISASSEMBLY

３-１４. Work clamp lifter mechanism (Solenoid specifications)

KE-430B, 431B, 433B, 434B KE-430C, 431C, 434C

l cap

11. Oi

12. Snap pin

13. Link shaft, C [Pull out]

14. Work clamp plate

15. Work clamp lifter link-related parts

16. Rubber caps [2 pcs]

17. Screws [2 pcs]

18. Screws [4 pcs]

19. Presser solenoid assy [Disconnect the harness]

3305Q

Note:

Hold the work clamp plate when removing link shaft C, otherwise the work clamp plate may fall down.

3307

Q

1. Springs [2 pcs] Screws [2 pcs]

2.

3. Guide

4. Snap pins [2 pcs]

5. Rubber cap

6. Link shaft, D [Pull out]

7. Set screws [2 pcs: Loosen]

8. Snap pins [2 pcs]

9. Link shaft, A [Pull out]

10. Washers [2 pcs]

Be careful not to drop.

<KE-433B, 434B, 434C>

3306Q

Do not remove, otherwise the work clamp will not move smoothly.

41

KE-430B, 430C series

KE-432, 432C BE-438, 4

38C

3308Q

11. Oil cap

12. Snap pin

13. Link shaft, C [Pull out]

14. Presser lifter link-related parts

15. Set screw [Loosen]

16. Button clamp lever shaft [Pull out]

17. Work clamp lifter lever [KE-432B, 432C]

Button clamp lifting lever

[BE-438B, 438C]

18. Retaining ring [BE-438B, 438C]

19. Work clamp lifting rod [Pull downward]

20. Rubber caps [2 pcs]

21. Screws [2 pcs]

22. Screws [4 pcs]

23. Presser solenoid assy

[Disconnect the harness]

Springs [2 pcs]

1.

2. Screws [2 pcs]

3. Guide

4. Snap pins [2 pcs]

5. Rubber cap

6. Link shaft, D [Pull out]

7. Set screw s [2 pcs: Loosen]

8. Snap pins [2 pcs]

9. Link shaft, A [Pull out]

10. Washers [2 pcs]

Be careful not to drop.

<BE-438B, 438C>

3. DISASSEMBLY

Q

3309

KE-430B, 430C series

42

3. DISASSEMBLY

３-１５. Stepping foot lifter mechanism (KE-435B, 435C, 436B, 436C)

1. Ret

aining ring

2. Plain washer

3. Screws [4 pcs]

4. Air cylinder setting pl ate [Pull upward after disconnecting the air tubes]

3310Q

43

KE-430B, 430C series

３-１６. Thread wiper mechanism

Solenoid specifications

3312

Q

R

emove the thread wiper rod assembly from the work clamp lever lifter shaft, and then lift it up together with the thread wiper driving lever to remove them.

Work clamp lever lifter shaft

3. DISASSEMBLY

3311Q

1. Screw

2. Plain

washer

3. Thread wiper

4. Retaining ring

5. Set screw [Loosen] Thread wiper arm assy

6. [Pull downward]

7. Set screw [Loosen]

8. Thread wi pe r sh aft

9. Retaining ring

10. Tension release lever spring

11. Retaining ring

12. Thread wiper rod assy

13. Thread wiper driving lever

KE-430B, 430C series

44

3. DISASSEMBLY

Pneumatic specifications

3313Q

1. Screw with w ashe r

2. Liftin

g lever

3. Plunger pin

4. B o lt s [2 pcs]

5. Solenoid box assy [Disconnect the harness]

6. Screws [2 pcs]

7. Thread wi pe r co nne cting rod as sy

8. Set screw [Loosen]

9. Thread wiper arm assy [Pull downward]

45

KE-430B, 430C series

Stepping foot specifications

KE-484C

3. DISASSEMBLY

3314Q

1. Plunger pin

2.

Bolts [2 pcs]

3. Solenoid box assy [Disconnect the harness]

4. Set screw [Loosen]

5. Thread wi pe r co nne cting rod as sy

Q

3315

1. Screw

2. B o lt s with washers [2 pcs]

3. B o lt s [2 pcs]

4. Cyli

nder box

[Disconnect the harness]

5. Set screw [Loosen]

6. Thread wi pe r co nne cting rod

KE-430B, 430C series

46

3. DISASSEMBLY

３-１７. Thread nipper mechanism

1. Set

screw

2. Thread tension assy [Pull out]

3. Tension release pin

4. Tension release stud

5. Shoulder screw

6. Shoulder screw

7. Tension release rod assy

8. Driving lev er push lever

9. Set screw [Loosen]

10. Work clamp lever lifter shaft

11. Collar

12. Tension release lever

13. Screw with washer

14. Lifting lever

15. Screw [KE-434B, 434C Pneumatic spec.]

16. Tension release rod [KE-434B, 434C Pneumatic spec.]

17. Presser bar lifter crank

3316Q

47

KE-430B, 430C series

Stepping foot specifications

KE-484C

3. DISASSEMBLY

3317

1. Set screw

2. Thread tension assy [Pull out]

3. Tension release pin

4. Tensio n release pin, L

5. Shoulder screw

6. Shoulder screw

7. Tension release rod assy

8. Driving lev er push lever

9. Screw

10. Tension release bracket

3318Q

1. Set screw

2. Thread tension assy [Pull out]

3. Tension release pin

4. Tensio n release pin, L

5. Tensi on release cylinder assy

6. Rubber cap

7. Set screw [Loosen]

8. Lever shaft

9. Tensio n release pin push leve r

Q

KE-430B, 430C series

48

3. DISASSEMBLY

３-１８. Thread take-up mechanism

3319Q

Stepping foot specifications

1. Screws [2 pcs]

2. Solenoid setting plate

3. Spring

4. Set screw s [2 pcs: Loosen]

5. Solenoid joint

6. Screw

7. Spring washer

8. Plain washer

9. Nut

10. Shoulder screws [2 pcs]

11. Thread take-up lever

12. Retaining ring

13. Thread take-up lever crank

14. Plain washer

3320

Q

49

KE-430B, 430C series

KE-484C

3. DISASSEMBLY

3321Q

1. Pin

2. Screws [2 pcs]

3. Setting plate

4. Shoulder screws [2 pcs]

5. Thread take-up lever

KE-430B, 430C series

50

3. DISASSEMBLY

３-１９. Thread trimmer mechanism

Return the machine head to its normal

sition, and then remove the

po connecting rod lever assembly and the thread driving lever assembly.

Tilt the machine head.

Be careful not to drop.

3323Q

Be careful not to drop.

3322Q

1. Rubber cap 2

. Set screw [Loosen]

3. Lever shaft bber cap

4. Ru

5. Set screw [Loosen]

6. Retaining ring

7. Driving lever gui de shaft

[Pull out]

8. Cu

shion

9. Thread release driving lever

assy

10. Washer

11. Spring

12. Spring

13. Spring hook

14. Nuts [2 pcs]

15. Shoulder screws [2 pcs]

16. Washers [2 pcs]

17. Set screw [Loosen]

18. Thread trimmer lever shaft

19. Thread trimmer lever

20. Connecting rod lever assy

21. Thread driving lever assy

51

KE-430B, 430C series

KE-484C

Be careful not to drop.

Return the machine head to its normal position, and then remove the thread trimmer rod L and the thread driving lever assembly.

Tilt the machine head.

3325Q

3. DISASSEMBLY

3324Q

1. Rubber cap

2. Set screw [Loosen]

3. Lever shaft

4. Rubber cap

5. Set screw [Loosen]

6. Ret aining rings [2 pcs]

7. Driving lever gui de shaft [Pull out]

8. Cushion

9. Wa

sher

10. Spring

11. Spring

12. Bolts [2 pcs]

13. Thread trimmer cylinder

14. Nuts [2 pcs]

15. Shoulder screws [2 pcs]

16. Washers [2 pcs]

17. Set screw [Loosen]

18. Thread trimmer lever shaft

19. Thread trimmer lever

20. Thread trimmer rod, L

21. Thread driving lever assy

KE-430B, 430C series

52

3. DISASSEMBLY

53

KE-430B, 430C series

４. ASSEMBL Y

Assemble each part in order of the numbers.

grease to the required places when reassembling the parts and once ever y two years.

Apply

４-１. Thread trimmer mechanism (1)

Install the retaining ring between the thread release driving lever assembly and the washer.

Pla

ce the cushion against the edge of the arm, set the various parts so that there is no gap between them as shown in the illustration, and then tighten the set screw as far as the screw stop. Adjust the position of the thread driving lever assembly while referring to “5-20. Adjusting the position of the thread trimming link mechanism”.

3328Q

Tighten the set screw on the screw flat while lightly pressing the lever shaft downward.

Apply grease.

Tilt the machine head.

Apply grease.

3330Q

Tighten the set screw on the screw flat while lightly pressing the thread trimmer lever shaft upward.

Apply grease.

Driving lever guide shaft

1.

2. Spri

3. Washer

4. Thread rel ea se driving lev er assy

5. Thread drivi n g lever assy

6. Cushion

7. Retaining ring

8. Set screw

9. Rubber cap

10. Connecting rod lever assy

11. Lever shaft

12. Set screw

13. Rubber cap

14. Thread trimmer lever

15. Thread trimmer lever shaft (with washer and retaining ring)

16. Set screw

17. Thread trimmer rod assy

18. Shoulder screw

19. Nut

20. Washers [2 pcs]

21. Sh

22. Nut

23. Spring hook

24. Spring

4. ASSEMBL Y

3329Q

ng

oulder screw

KE-430B, 430C series

54

4. ASSEMBL Y

KE-484C

Install the retaining ring between the thread driving lever assembly and the washer.

ce the cushion against the edge of the

Pla arm, set the various parts so that there is no gap between them as shown in the illustration, and then tighten the set screw as far as the screw stop. Adjust the position of the thread driving lever assembly while referring to “5-20. Adjusting the position of the thread trimming link mechanism”.

3331Q

Tighten the set screw on the screw flat while lightly pressing the lever shaft downward.

Apply grease.

Tilt the machine head.

Apply grease.

3333Q

Tighten the set screw on the screw flat while lightly pressing the thread trimmer lever shaft upward.

3332Q

Apply grease.

1. Driving lever gui de shaft

2. Spring

3. Washer

4. Thread drivi n g lever assy

5. Cushion

6. Ret aining rings [2 pcs]

7. Set screw

8. Rubber cap

9. Thread trimmer rod, L

10. Lever shaft

11. Set screw

12. Rubber cap

13. Thread trimmer lever

14. Thread trimmer lever shaft (with washer and retaining ring)

15. Set screw

16. Thread trimmer rod assy

17. Shoulder screw

18. Nut

19. Washers [2 pcs]

20. Shoulder screw

21. Nut

22. Thread trimmer cylinder

23. Bolts [2 pcs]

24. Spring

55

KE-430B, 430C series

４-２. Thread nipper mechanism

Solenoid specifications

After installing the lifting lever, check that it moves smoothly.

3334Q

Apply grease.

4. ASSEMBL Y

Apply grease.

Driving lever stopper

Install the driving lever push lever an

d the tension release lever U to the driving lever stopper with the shoulder screw.

1. Presse r ba r lifter cran k

2. Liftin

g lever

3. Screw with w ashe r

4. Work clamp lever lifter shaft

5. Tensi on release lever

6. Collar

7. Tension release rod assy

8. Shoulder screw

9. Driving lev er push lever

10. Tension release lever, U

11. Shoulder screw

KE-430B, 430C series

56

4. ASSEMBL Y

Pneumatic specifications

After installing the lifting lever

, check that it moves

smoothly.

3335Q

3336Q

Tighten the set screw while lightly pressing the work clamp lever lifter shaft.

Apply grease.

Install the driving lever push lever and the tension release lever U to the driving lever stopper with the shoulder screw.

Apply grease.

Driving lever stopper

Adjust the thread take-up spring height while referring to “1-2. Standard thread tension”.

1. Presse r ba r lifter cran k 12. Retaining ring

2. Tension release rod 13. Tension release rod assy

3. Screw 14. Shoulder screw

4. Lifting lever 15. Driving lever push lever

5. Screw with w ashe r 16. Tension release lever, U

6. Work clamp lever lifter shaft 17. Shoulder screw

7. Tensi on release lever 18. Tension release stud

8. Collar 19. Tension release pin

9. Retaining ring 20. Thread tension assy

10. Set screw

21. Set screw

11. Tension release lever spring

57

KE-430B, 430C series

Stepping foot specifications

sion release bracket

1. Ten

2. Screw

3. Tension release rod assy

4. Shoulder screw Driving lever push lever

5.

6. Tensi on release lever, U

. Shoulder screw

7

Tension release pin, L

8.

9. Tension release pin

10. Thread tension assy

11. Set screw

KE-484C

3338Q

Apply sealant (Threebond 1212 or similar) to the thread sec

Apply grease.

tion.

Adjust the thread take-up spring height wh

ile referring to “1-2. Standard thread

tension”.

1. Tensio n release pin push leve r

2. Leve

3. Set screw

4. Rubber cap

5. Tension release cylinder assy

6. Tensio n release pin, L

7. Tension release pin

8.

9. Set screw

4. ASSEMBL Y

Apply grease.

Driving lever stopper

Install the driving lever

push lever and the tension release lever U to the driving lever stopper with the shoulder screw.

r shaft

Thread tension assy

3337Q

KE-430B, 430C series

58

4. ASSEMBL Y

４-３. Thread wiper mechanism

Solenoid specifications

hten the set screw while lightly

Tig pressing the work clamp lever lifter shaft.

3341Q

Adjust the thread take-up spring height while referring to “1-2. Standard thread tension”.

After installing the thread wiper, moved the forked part of the thread wiper driving lever and check that the thread wiper unit moves smoothly. Not

e: If the thread wiper unit does not move smoothly, error E-60 may be displayed.

3339Q

Adjust while referring to “5-17. Adjusting the thread wiper”.

Thread wiper rod assy

1. [Insert from above]

2. Thread wi pe r drivin g lever

3. Thread wiper shaft (with washer and retaining ring)

4. Set screw

5.

Thread wiper rod assy [Place onto the work clamp lever lifter shaft]

6. Retaining ring

7. Work clamp lever lifter shaft

8. Set screw

9. Tension release lever spring

10. Retaining ring

11. Thread wiper arm assy

12. Retaining ring

13. Set screw [Temporarily tighten]

14. Thread wiper

15. Plain washer

16. Screw

17. Tension release stud

18. Tension release pin

19. Thread tension assy

20. Set screw

59

KE-430B, 430C series

Pneumatic specifications

When installing the sole-

d box assembly, pass

noi the tension release rod through the hole.

3342Q

After i

nstalling the plunger pin, push the thread wiper connecting rod assembly up and check that the thread wiper unit moves smoothly.

4. ASSEMBL Y

Adjust while referring to “5-17. Adjusting the thread wiper”.

1.

Thread wiper arm assy

2. Set screw [Temporarily tighten]

3. Thread wi pe r co nne cting rod as sy

4. Screws [2 pcs]

5. Solenoid box assy

6. Washers [2 pcs]

7. B o lt s [2 pcs]

8. Plunger pin

9. Lifting lever

10. Screw with washer

KE-430B, 430C series

60

4. ASSEMBL Y

Stepping foot specifications

After installing the face pl install the bolts, and then push the thread wiper connecting rod assembly up and check that the thread wiper unit moves smoothly.

ate while referring to “4-21. Covers”,

KE-484C

3343Q

Adjust while referring to “5-17.

sting the thread wiper”.

Adju

1. Thread wi pe r co nne cting rod as sy

2.

Set screw [Temporarily tighten]

3. Solenoid box assy 4

. Washers [2 pcs]

Bolts [2 pcs]

5.

6. Plunger pin

7. Bolts [ 2 pcs: Install to face plate]

3344Q

1.

Thread wiper connecting rod

2. Set screw [Temporarily tighten]

3. Cylinder box

4. Washers [2 pcs]

5. B o lt s [2 pcs]

6. B o lt s with washers [2 pcs]

7. Screw

61

KE-430B, 430C series

４-４. Thread take-up mechanism

3346Q

While pushing the solenoid joint in the direction of the arrow, set the solenoid setting plate and the solenoid joint so that the gap between them is 0.5 mm, and then tighten the set screws. * Move the solenoid joint and

check that the thread take-up lever operates smoothly. If it does not move smoothly, it may damage the solenoid. If the movement is not smooth, make fine adjustments to the position of the solenoid setting plate until the thread take-up lever operates smoothly.

Seen from the front

3345Q

Attach the spring to spring ho

oks (A) and (B).

1) Provisionally install the solenoid joint to the thread take-up solenoid with the set screws.

2) Place the solenoid joint onto the thread take-up lever crank so that the flat surface is against the flat part of the thread take-up crank, and then install the solenoid setting plate to the machine head.

Apply grease.

3347Q

Thread take-up lever crank

1.

2. Plain washer

3. Retaining ring

4. Thread take-up lever

5. Shoulder screws [2 pcs]

6. Set screw [Temporarily tighten]

7. Spring washer

8. Plain washer

9. Nut

10. Solenoid joint

11. Set screws [2 pcs]

12. Spring

13. Solenoid setting plate

14. Screws [2 pcs]

4. ASSEMBL Y

KE-430B, 430C series

62

4. ASSEMBL Y

p

Stepping foot specifications

3346Q

While pushing the solenoid joint in the direction of the arrow, set the solenoid setting plate and the solenoid joint so that the gap between them is 0.5 mm, and then tighten the set screws. * Move the solenoid joint and

check that the thread take-up lever operates smoothly. If it does not move smoothly, it may damage the solenoid. If the movement is not smooth, make fine adjustments to the position of the solenoid setting plate until the thread take-up lever o

erates smoothly.

Attach the spring to spring hooks (A) and (B).

1) Provisionally install the solenoid joint to the thread take-up solenoid with the set screws.

2) Place the solenoid joint onto the thread take-up lever crank so that the flat surface is against the flat part of the thread take-up crank, and then install the solenoid setting plate to the machine head.

Apply grease.

3349Q

1.

Thread take-up lever crank

2. Plain washer

3. Retaining ring

4. Thread take-up lever

5. Shoulder screws [2 pcs]

6. Set screw [Temporarily tighten]

7. Spring washer

8. Plain washer

9. Nut

10. Solenoid joint

11. Set screws [2 pcs]

12. Spring

13. Solenoid setting plate

Seen from above 14. Screws [2 pcs]

3348Q

63

KE-430B, 430C series

KE-484C

4. ASSEMBL Y

3350Q

1. Thread take-up lever

2. Shoulder screws [2 pcs]

3. Setting plate

4. Screws [2 pcs]

5. Pin

6. Retaining ring

KE-430B, 430C series

64

4. ASSEMBL Y

４-５. Work clamp lifter mechanism (Solenoid specifications)

When assembling, apply grease to the required places while referring to “4-5-1. Applying grea se”.

KE-430B, 431B, 433B, 434B KE-430C, 4

1.

Work clamp lifter link-related parts [Insert from above the arm]

2. Link shaft, B [Place into the forked section of the thread wiper driving lever (2)]

3. Link shaft, A [Pass through the washer and link A (3)]

4.

Snap pins [2 pcs: Attach to both ends of link shaft A]

5. Set screws [2 pcs] 6

. Work clamp lifter stopper rubber

7. Work clamp plate [Insert from below the arm]

8. Link shaft, C [Pass through link B (8) and the work clamp plate]

9. Snap pins [2 pcs: Attach to both ends of link shaft C]

10. Presser solenoid assy [Insert from above the arm]

31C, 434C

Secure link shaft, A using the set scre

w so that link, B (8) is centered

in the bush.

<KE-433B, 434B, 434C>

3351Q

65

KE-430B, 430C series

3352Q

Lastly, move the work clamp lifer link-related parts by hand and check that they move smoothly.

11. Screws [2 pcs]

12. Screws [4 pcs]

13. Rubber caps [2 pcs]

14. Link shaft, D

15. Snap pins [2 pcs]

16. Guide

17. Screws [2 pcs]

18. Springs [2 pcs: Hook onto link shaft B and the grooved pins (18)]

19. Oil cap

20. Rubber cap

4. ASSEMBL Y

Tighten the screws so that the presser solenoid assembly protrudes by 110.0 ± 0.2 mm from the edge of the arm.

Seen from above

3353Q

KE-430B, 430C series

66

4. ASSEMBL Y

Wh

en assembling, apply grease to the required places while referring to “4-5-1. Applying grease”.

KE-432B, 432C BE-438B, 4

38C

Secure link shaft A using the set scre

w so that link B (10) is centered

in the bush.

<BE-438B, 438C>

1. Work clamp lifter link-related parts [Insert from above the arm]

2. Link shaft, B [Place into the forked section of the thread wiper driving lever (2)]

3.

Link shaft, A [Pass through the washer and link A (3)]

4. Snap pins [2 pcs: Attach to both ends of link shaft A]

5. Set screws [2 pcs]

6. Retaining ring

7. Plain washer

8. Rubber band

9. Work clam p lifting rod

10. Link shaft, C [Pass through link B (10) and the work clamp plate]

11. Snap pins [2 pcs: Attach to both ends of link shaft C]

12. Presser solenoid assy [Insert from above the arm]

13. Screws [2 pcs]

14. Screws [4 pcs]

15. Rubber caps [2 pcs]

3354Q

67

KE-430B, 430C series

3355Q

Lastly, move the work clamp lifer link-related parts by hand and check that they move smoothly.

16. Link shaft, D

17. Snap pins [2 pcs]

18. Guide

19. Screws [2 pcs]

20. Springs [2 pcs: Hook onto link shaft B and the grooved pins (20)]

21. Oil cap

22. Rubber cap

23. Work clamp lifter lever［KE-432B, 432C］

Button clamp lifting lever［BE-438B, 438C］

24. Button clamp lever shaft

25. Set screw

4. ASSEMBL Y

Tighten the screws so that the presser solenoid assembly protrudes by 110.0 ± 0.2 mm from the edge of the arm.

en from above

Se

3356Q

KE-430B, 430C series

68

4. ASSEMBL Y

４-５-１. Applying grease

If the work clamp does not move up and down smoothly, error E-60 may be displayed. Check that the mechanism moves smoothly and also apply grease to all sliding parts during assembly.

-433B, 434B, 434C>

<KE

<KE-432B, 432C> <BE-438B, 438C>

Sliding portions of link shaft, C [1], link, B [2], and work clamp plate (work clamp lifting rod: KE-432B, 432C,

1. BE-438B, 438C) [3]

2. Sliding portions of link shaft, B [4], link, B [2], link, A [5] and link assy, C [6]

3. Forked portion of the thread wiper driving leve r [7]

4. Sliding portions of link shaft, A [8] and link, A [5]

5. Slidi ng portions of link shaft, D [9] and link a ssy, C [6]

6. Forked portion of the plunger [10] where lin k assy, C [6] is fitted

7. Outer and inner surfaces of sphe rical bush [11] to be attached to link assy, C [6]

8. Shaft of work clamp pl ate (wor k cla mp lif ting rod: KE-432B/432C, BE-438B/438C) [3]

3357Q

69

KE-430B, 430C series

４-６. Feed mechanism (1)

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

Fee

d cams X and Y both have index marks. Check these when using.

Assembly steps of the feed mechanism are the same for X and Y directions.

Tighten the set screw in the illustration at the screw stop position.

Set screw at screw stop

Ch

eck that the feed cam

turns smoothly.

3361Q

Place the coupling hub onto the pulse motor shaft, and then tighten the set screw at the screw stop position so that the pulse motor shaft protrudes from the edge by 2.5 mm.

3359Q

Place coupling hub 8 onto the cam shaft so that there is no play in the hub, and then tighten the set screw at the screw stop position as shown in the illustration.

3362

Q

4. ASSEMBL Y

3358Q

Screw stop

Q

3360

1. Feed cam . Ball bearings [2 pcs]

2

3.

Cam shaft (with retaining ring)

4.

Coupling hub, 8

5. Set screws [2 pcs]

Set screws [2 pcs]

6.

7. Feed home position dog

8. Screw [Provisionally tighten at

middle of slot]

9. Coupling hub, 6.35

Coupling hub, 8［KE-433B］

10. Set screws [2 pcs]

KE-430B, 430C series

70

4. ASSEMBL Y

Assembly steps of the feed mechanism are the sam e for X and Y directions.

Apply grease.

Plac coupling hub 8.

3363Q

Place the feed cam bracket onto the positioning pin

s, and then install with the screws.

Set the coupling hub at the angle for inserting the coupling spacer, and install the pulse motor to the machine bed. * Make sure that the harness faces correctly.

3365Q

Q

3364

e the coupling spacer onto

11. Coupling spacer sitioning pins [2 pcs]

12. Po

13. Feed cam bracket

14. Screws [2 pcs]

3366Q

15. Pulse motor assy, X

16. Bolts [4 pcs]

17. Pu

lse motor assy, Y

18. Bolts [4 pcs]

71

KE-430B, 430C series

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

d cams X and Y both have index marks. Check these when using.

Fee

Assembly steps of the feed mechanism are the same for X and Y directions.

X direction

Place the cam onto the cam shaft so that there is no play in the cam, and then tighten the set screws.

3369Q

Place the coupling hub 8 onto the pulse motor shaft, and then tighten the set screw at the screw stop position so that the pulse motor shaft protrudes from the edge by 2.5 mm.

3362Q

4. ASSEMBL Y

Align the edges of coupling hub 8 and the cam shaft.

3368Q

Y direction

1.

Coupling hub, 8

2.

Set screws [2 pcs]

3. PM bracket

4. Ball bearing [X: 2 pcs, Y: 1 pc]

5. Cam shaft

6. Feed cam

7. Set screws [2 pcs]

8. Coupling hub, 8

9. Set screws [2 pcs]

3367

Q

KE-430B, 430C series

72

4. ASSEMBL Y

Apply grease.

While pressing the set collar, tighten the set screw at the screw stop position.

Place the feed cam bracket onto the positioning pins, and then install with the screws.

3371Q

Apply grease.

1) Place the coupling spacer onto coupling hub 8.

2) Set coupling hub 8 on the pulse motor shaft at the

Apply grease.

angle for inserting the coupling spacer, and install the pulse motor to the machine bed. * Make sure that the harness faces correctly.

3370Q

10. Ball bearing [Insert into the bed]

11. Coupling spacer

12. Pulse motor assy, X

13. PM bracket, X

14. Bolts [4 pcs]

15. Positioning pins [2 pcs]

16. Y-feed cam bracket

17. Screws [2 pcs]

18. Ball bearing

19. Coupling spacer

20. Pulse motor assy, Y

21. PM bracket, Y

22. Bolts [4 pcs: 3 pcs for KE-484C]

23. Set screw collar

24. Set screws [2 pcs]

73

KE-430B, 430C series

４-７. Feed mechanism (2)

4. ASSEMBL Y

KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 4

31C, 432C, BE-438C

Feed home posit

ion dog

O

il supply

hole

3372Q

Note:

Mak

e sure the wick does not

touch the connecting rod lever.

1) Insert the tack width feed lever shaft with the thrust washer and retaining ring installed into the Y-feed lever assembly, press down on the top of it so that there is no play, and then tighten the set screw at the screw stop position. *

Check that the Y-feed lever assembly

moves smoothly.

Q

3375

2) Put the driver into the en

d of the Y-feed lever, and press the X-feed lever assy downward.

3)

Place the set screw collar on the shaft of the X-feed lever, press it in the direction of the arrow, and tighten the set screws.

3376Q

Push the home position sensor Y cable into the recess.

Install home position sensors X and Y so that there is a gap of 0.5–0.9 mm between the sensors and the feed home position dog.

3374

Q

3373

Feed home

ion dog

posit

1. X-feed lever assy [Insert onto bushing] d cam roller

2. Fee

[Place into groove

of feed cam X]

3. Thrust washer

4. Y-feed lever assy d cam roller

5. Fee

[Place into groove

of feed cam Y]

6. Thrust washer

7. Tack width feed lever shaft (with retaining

ring)

8. Set screw

9. Set screw collar

10. Set

screws [2 pcs]

11. Home sensor setting plate

12. Screw

13. Home sensor setting plate

14. Screw

15. Cord holder

16. Screw

17. Cord holder

18. Screw

19. Wick [Insert into oil supply hole]

20. Wick [Insert into oil supply hole]

KE-430B, 430C series

74

4. ASSEMBL Y

KE-434B, 435B, 436B KE-434C, 4

35C, 436C, 484C

Oil supply

hole

3377Q

1) Insert the tack width feed lever shaft with the thrust washer and retaining ring installed into the Y-feed lever assembly, press down on the top of it so that there is no play, and then tighten the set screw at the screw stop position. * Check that the Y-feed lever assembly

moves smoothly.

Note:

Make sure the wick does not touch the connecting rod lever.

3575Q

2) Put the driver into the end of the Y-feed lever, and press the X-feed lever assy downward.

3) Place the set screw collar on the shaft of the X-feed lever, press it in the direction of the arrow, and tighten the set screws.

3376

Q

Push the home position sensor Y cable into the recess.

Home position dog, X

3379Q

Home position sensor X

Install the X-sensor setting base so that there is a gap of 0.5–0.9 mm between the sensing surface of home position sensor X and the home position dog X.

3378Q

1. X-feed lever assy [Insert onto bushing]

2. Feed cam roller [Place into groove of feed cam X]

3. Thrust washer

4. Y-feed lever assy

5. Feed cam roller [Place into groove of feed cam Y]

6. Thrust washer

7. Tack width feed lever shaft (with retaining ring)

8. Set screw

9. Set screw collar

10. Set screws [2 pcs]

11. X-sensor setting base

12. Screw

13. Y-sensor setting plate

14. Screw

15. Cord clamps [3 pcs]

16. Screws [3 pcs]

17. Wick [Insert into oil supply hole]

18. Wick [Insert into oil supply hole]

75

KE-430B, 430C series

４-８. Upper shaft mechanism

Place the thread take-up crank onto the upper shaft from the face plate end, tighten the screw into the hole in the upper shaft, and then tighten the set screw.

3381Q

3382Q

<KE-435B, 435C> <

KE-436B, 436C>

Apply grease. Apply grease.

Make a gap of 1.0 mm between the magnet of timing pulley assembly U and the synchronizer assembly, and then align the rear set screw in the rotation direction of timing pulley assembly U with the screw stop position and tighten the set screw at that position.

Rotation direction

Apply grease.

Upper shaft bu

Place the thread take-up crank, thrust wa (stepping foot connecting rod) into the upper shaft bush so that there is no play in the parts, and then tighten the set screw at the screw stop position.

Rotation direction

4. ASSEMBL Y

Push the t

hread trimmer cam onto the upper shaft crank, align the forward set screw in the rotation direction with the screw stop position, and tighten the set screw at that position.

Apply adhesive (Threebond

sh

14

01 or similar) to the outside

of the bearing.

sher and bobbin winder pulley

1. Upper shaft

2. Thread trimmer cam

3. Bobbin winder pulley <3> Stepping foot

connecting rod

Thrust washer

4. read take-up crank

5. Th

6. Screw

screw

7. Set

Set screws [2 pcs]

8.

<8> Set screws [2 pcs]

9. Set screws [2 pcs

10. Synchronizer assy

11. Screws [2 pcs]

12. Timing pulley assy, U

3383Q

13. Set screws [2 pcs]

3380Q

KE-430B, 430C series

76

4. ASSEMBL Y

KE-484C

Make a gap of 3 mm between the thread trimmer cam and U-timing pulley F.

Align the ridge line at the back of the groove in the upper shaft with the edge of the thread trimmer cam.

Apply grease.

Place the thread take-up crank onto the upper shaft from the face plate end, tighten the screw into the hole in the upper shaft, and then tighten the set screw.

3385Q

Upper shaft bush

Apply adhesive (Threebond

3384Q

1401 or similar) to the outside of the bearing.

Apply grease.

Place the thread take-up crank, thrust

asher and bobbin winder pulle y into the

w upper shaft bush so that there is no play in the parts, and then tighten the set screw at the screw stop position.

per shaft 11. Set screws [2 pcs]

1. Up

2. Thread trimmer cam 12. Set screws [2 pcs]

3. U-timing pulley, F 13. Tension pulley arm

4. U-timing belt, F 14. Adjusting screw

5. Bobbin winder pulley 15. Nut

6. Thrust washer 16. Adjusting screw

7. Thread take-up crank 17. Nut

8. Screw 18. Plain washer

9. Set screw

19. Nut

10. Set screws [2 pcs]

77

KE-430B, 430C series

3386Q

3387

4. ASSEMBL Y

20. Setting plate packing

21. Frame side cover

22. Bli

nd plate

23. Screws [4 pcs]

24. Belt cover support pillars [2 pcs]

25. Synchronizer assy

26. Screws [2 pcs]

27. Timing pulley assy, U

28. Set screws [2 pcs]

Q

3382Q

Make a gap of 1.0 mm between the magnet of timing pulley

Rotation direction

assembly U and the synchronizer assembly, and then align the rear set screw in the rotation direction of timing pulley assembly U with the screw stop position and tighten the set screw at that position.

3383Q

KE-430B, 430C series

78

4. ASSEMBL Y

４-９. Stepping foot lifter mechanism (KE-435B, 435C, 436B, 436C)

Work clamp

lifter lever

Presser bar bush

3389Q

Install the air cylinder setting plate so that there is a distance of 42.8–43.3 mm between section A of the work clamp lifter lever and the top of the presser bar bush when section A is at its lowest point.

1. Stepping link, A

2. Plain

washer

3. Retaining ring

4. Air cylinder setting pl ate

5. Screws [4 pcs]

3388Q

79

KE-430B, 430C series

４-１０. Stepping foot mechanism (KE-435B, 435C, 436B, 436C)

4. ASSEMBL Y

Adjust while referring to “5

-16. Changing the

work clamp lift”.

Adjust while referring to “5-15. Work clamp adjustment”.

Set

the presser adjusting screw so that the distance from its top to the top of the machine head is approximately 32 mm, and then secure the nut.

Nut

3391Q

Insert the presser bar spring and the presser bar spring guide into the top of the machine head, pass them through the washer, and then place them onto the presser bar.

3390Q

1. Stepping foot arm, R

2.

Feed lifter lever shaft

3. Washers [2 pcs]

4. Feed roller

5. Nut Stepping foot arm, F

6.

7. Bush, L

8. Bush, R

9. Bolt

10. Presser bar [Insert from above]

11. Pr

esser bar lifter

12. Cushion

13. Pre

sser bar clamp

14. Screw

15. Washer

16. Presser bar spring

17. Presser bar spring guide

18. Presser adjusting screw

19. Stepping link assy

20. Screws [2 pcs]

21. Presser foot

2. Finger guard

2

23. Plain washers [2 pcs]

24. Screw

KE-430B, 430C series

80

4. ASSEMBL Y

４-１０-１. Adjusting the lowest point of the presser foot

Carry out the steps in “4-11. Needle bar mechanism” before making this adjustment.

3506Q 3507Q

Q 3509Q

3508

1.

Loosen the set screw (1).

2. Turn the machine pulley to raise the needle bar from its lowest position until reference line B (the lowest reference line on the needle bar) or reference line b (second reference line from the top) is aligned with the lower edge of the needle bar bush (2).

3. Turn the stepping work clamp cam (3) without turning the machine pulley to set the presser bar lifter (4) to its lowest position, and then secure the stepping work clamp cam (3) to the upper shaft (5) with the set screw (1). * At this time, push the stepping work clamp cam (3) in the direction of the arrow so that there is no play

between it and the upper shaft (5).

4. With the presser bar lifter (4) at its lowest point, loosen the bolt (8) of stepping work clamp arm R (7) an d adjust so that the gap between the presser bar lifter (4) and the presser bar bush (6) is 0.5–1.0 mm. (A guide to this is that the index mark on stepping work clamp arm F (9) should be about aligned with the index mark on the arm.) * Check that there is no forward or backward play in stepping work clamp arm F (9) at this time.

5. With the presser bar (10) at its lowest position , secure the presser bar c lamp (11) with the screw (12) so that the distance from the bottom edge of the presser bar and the top of the needle plate is 23 mm.

Index marks

81

KE-430B, 430C series

A

４-１１. Needle bar mechanism

Press the thread take-up support shaft gently while tightening the set screw.

After securing the needle bar, position the ne

edle bar guide so that the machine pulley

turns smoothly, and then tighten the screws.

3394Q

lign the needle bar so that reference line A (the second lowest reference line on the needle bar) or reference line a (top reference line) is aligned with the lower edge of the needle bar bush when the machine pulley is turned to raise the needle bar from its lowest position, and then set the cut section so that it is facing forward and tighten the screw.

3395Q

Apply grease.

Cut section

Oil supp

4. ASSEMBL Y

ly hole

Align th

e set screw with

3392Q

the screw stop.

Apply grease.

Fit the chamfering side of the slide block into th

e groove on the needle bar guide.

1. Needle bar guide

2. Scre

ws

[2 pcs: Temporarily tighten]

3. Thread take-up lever

4. Needle ba r conne cting ro d edle bearing

5. Ne

6. Set screw

7. Set

screw

read take-up support

Needle bar bush

8. Th

9.

Thread take-up support shaft

10. Set

screw

11. Slide block

12. Needle bar clamp

13. Needle bar [Insert from above]

14. Screw

15. Oil cap

16. Rubber caps [4 pcs]

17. Wick [Insert into oil supply

hole]

3393Q

KE-430B, 430C series

82

4. ASSEMBL Y

４-１２. Lower shaft mechanism

3398Q

KE-430C series BE-438C

Place the driver against the retaining ring and provisionally tighten the bolt.

Apply grease.

Mating mark

Clamp the rock gear with the stepped part of the rock gear shaft and the set screw collar so that there is no play in the rock gear, and then tighten the set screws.

3396Q

Engage the lower shaft gear with the rock gear.

Apply grease.

Lower shaft bush

Set the needle bar to its lowest position

KE-430B series BE-438B

and then insert the lower shaft with this screw stop facing straight downward.

Clamp the lower shaft bush with the lower shaft gear and the set screw collar so that there is no play in the lower shaft bush, and then tighten the set screws.

Insert the crank rod (lower part) into the crank of the upper shaft, and then align the mating mark on the crank rod (upper part) from above and gently tighten the screws. * Check that the machine pulley turns smoothly.

1. Rock gear shaft [Insert from the rear of the machine head]

2. Rock gear

3. Set screw collar

4. Set screws [2 pcs]

5. Lower shaft assy [Insert from the rear of the machine head]

6. Set screw collar

7. Set screws [2 pcs]

8. Retaining ring

9. Driver

10. Bolt [Temporarily tighten]

11. Crank rod (Lower part) [Insert into upper shaft crank]

12. Crank rod (Upper part) [Align the mating mark]

13. Screws [2 pcs]

3397

Q

83

KE-430B, 430C series

While turning the machine pulley, move the rock gear to the left and right to find the position where it moves smoothly. Then without moving the rock gear, turn the rock gear shaft so that there is a gap of 0.05--0.12 mm at the end of the driver, and tighten the set screws. * Check that the machine pulley turns

smoothly.

3399Q

Carry out the steps in “5-26. Adjusting the tension of the upper shaft timing belt” before tightening.

3401Q

4. ASSEMBL Y

3400Q

Place the upper shaft timing belt onto the upper shaft pulley and the motor pulley.

14. Set screws [2 pcs]

15. Wick [Pass through the rock gear shaft and make a knot]

16. Upper shaft timing belt

17. Motor bracket

18. Bolts [3 pcs: Temporarily tighten]

19. Bolt

20. Nut

21. Motor connector

KE-430B, 430C series

84

4. ASSEMBL Y

KE-484C

3402Q

Carry out the steps in “5-26. Adjus ting the tension of the upper shaft timing belt” before tightening.

Place the upper shaft timing belt onto the upper shaft pulley and the motor pulley.

3404Q

3403Q

Lower shaft [Insert from the rear of the

1. machine head]

2. Lower shaft timing pulley

3. Thrust bearing

4. Lower shaft gear spacer

5. Wick [Pass through the lower shaft and make a knot]

6. Set screw

7. U-timing belt, F [Place onto the lower shaft timing pulley]

8. Rotary hook shaft [Insert from the rear of the machine head]

9. Set screw collar

10. Set screws [2 pcs]

11. Lower gear

12. Set screw

13. Upper shaft timing belt

14. Motor bracket

15. Bolts [3 pcs: Temporarily tighten]

16. Bolt

17. Nut

18. Motor connector

85

KE-430B, 430C series

A

４-１３. Thread trimmer mechanism (2)

4. ASSEMBL Y

1) Place the thread connecting rod onto the pin of the connecting rod lever assembly, and then install the needle plate with flat screws and screws so that the needle is at the center of the needle hole.

<KE-484C>

3405Q

Connecting rod lever assy

3406Q

Dr

iving lever

stopper

2) Turn the machine pulley to set the needle to its lowest position. Install the thread trimmer solenoid with the

3) screws so that the gap between the thread driving lever assembly and the driving lever stopper is 0.5 mm when the plunger of the thread trimmer solenoid is pushed all the way in.

Plunger

Thread driving

lever assy

fter installing, carry out the steps in “5-19. Adjusting the movable knife”.

3408Q

Connecting rod lever

1. Thread co nn ecti ng rod

2. Needle plate

3. Flat screws [2 pcs]

4. Screws [2 pcs]

5. Thread trimmer solenoid Screws [2 pcs]

6.

3407Q

KE-430B, 430C series

86

4. ASSEMBL Y

４-１４. Shuttle hook mechanism

3411Q

After installing the shuttle hook, carry out the adjustments in “5-2. Adjusting the needle bar lift amount”, “5-3. Adjusting the driver needle guard” and “5-4. Adjusting the needle clearan c e”.

3412Q

1. Needle ba r thre ad gui de

2. Ne

edle

3. Set screw

4. Shuttl

5. Shuttl

e hook e race base

6. Bobbin

7. Bobbin case assy

. Felt holder

8

9. Support [Return to original position]

＜KE-430B series

, BE-438B＞

3447Q

1) Place the felt support as shown in the illustration so as not to clamp the felt.

Felt

87

2) Press the felt and the wick gently as shown in the illustration.

KE-430B, 430C series

Wic

k

Felt

3419

3421Q3420Q

Q

KE-484C

3422Q

Inst distance from the tip of the bobbin case holder position bracket to the needle drop surface is approximately 0.8 mm.

Tu

rn the machine pulley to align the tip of the rotary hook with the needle center line. Then tighten the set screw to adjust the clearance between the needle and the tip of the rotary hook to

0.01–0.08 mm.

Tip of the rotary hook

Set s

crews

4. ASSEMBL Y

3423

Approx. 0.8mm

Bobbin case hold

ion bracket

posit

Shuttle h

er

ook

all the hook stopper setting base so that the

3424Q

3425Q

1. Needle ba r thre ad gui de edle

2. Ne

3. Set screw

4. Treble hook assy

Set screws [2 pcs]

5.

Hook stopper setting base

6.

7. Screw

8. Bobbin

9. Bobbin case assy

Q

KE-430B, 430C series

88

4. ASSEMBL Y

４-１５. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C)

Be careful not to drop these two ball bearings when installing the feed bracket assembly.

Align with the screw stop and push down from above while tightening the set screw.

3426Q

Tack length feed slide block

Place the tack length feed slide block into the groove of the feed bracket assembly, and then use the screws to install it together with the feed bracket guide plate.

Be careful not to drop these three ball bearings when installing the work clamp arm assembly.

Secure the work clamp arm support shaft with the set screw so

e bottom of the work clamp arm support plate and the ball

that th bearings touch when the work clamp is rai se d.

Refer to “4-20. Work clamp arm mechanism (Applying grease)”

3427Q

Carry out the adjustment in “5-24. Adjusting the home position” before installing the fee d plate.

d bracket assy

1. Fee

2. Feed bracket guide plat e

3. Screws [8 pcs]

4. Rod end

5. Tack width feed shaft

6. Set screw

7. Rubber cap

8. Feed plate

9. Screws [2 pcs]

10. Work clamp felt

11. Work clamp arm assy

12. Washers [2 pcs]

13. Bolts [2 pcs]

14. Work clamp arm support shaft

15. Set screw

After installing, carry out test feed ing and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the work clamp arm assembly and feed plate.

89

KE-430B, 430C series

4. ASSEMBL Y

４-１６. Work clamp arm mechanism (KE-432B, 432C)

Be careful not to drop these two ball bearings when installing the feed bracket assembly.

3426Q

Tack length feed slide block

First place onto A, then insert into B

d place onto C.

an

Carry out the adjustment in “5-24. Adjusting the home position” before installing the feed plate.

After installing, carry out test feed ing and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the button clamp holder support and feed plate.

Align with the screw stop and push down from above while tightening the set screw.

Place the tack length feed slide block into the groove of the feed bracket assembly, and then use the screws to install it together with the feed bracket guide plate.

Refer to “4-20. Work clamp arm mechanism (Applying grease)”

d bracket assy

1. Fee

2. Feed bracket guide plat e

3. Screws [8 pcs]

4. Rod end

5. Tack width feed shaft

6. Set screw

7. Rubber cap

8. Feed plate

9. Screws [2 pcs]

10. Work clamp felt

11. Button clamp holder

support

12. Plain washers [2 pcs]

13. Bolts [2 pcs]

14. Work clamp arm assy

15. Button clamp holder shaft

16. Set screws [2 pcs]

17. Nuts [2 pcs]

Adjusting screw Co

mpression spring

18. Work clamp carrier rod assy

3428Q

19. Washer

20. Bolt

KE-430B, 430C series

90

4. ASSEMBL Y

y

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

Install parts 1 to 6, clamp them using parts 7 and 8 so there is no play in them, and tighten the set screw 9. Note:

Install so that the two ball bearings of the feed bracket guide shaft assembly do not fit into the holes in the feed bracket guide plate.

Be careful not to d ball bearings when installing the work clamp arm assembl

Secure the work clamp arm support shaft with the set screw so that the bottom of the work clamp arm support plate and the ball bearings touch when the work clamp is raised.

3430Q

After installing, carry out test feed ing and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the work clamp arm

Carry out the adjustment in “5-24. Adjusting the home po

sition” before installing the feed plate.

rop these three

.

Refer to “4-20. Work clamp arm mechanism (Applying grease)”

1. Feed bracket guide plat e feed cover

2. X feed cover

3. Y

4. Feed bracket assy

5. Spacers [2 pcs]

6. Retainer assys [2 pcs]

7. Feed bracket guide shaft as sy

8. Tack length regulator block

9. Set screw

10. Cover support stand

11. Screw

12. Feed bracket cover

13. Screws [8 pcs]

14. Tack width feed shaft

15. Set screw

16. Rubber cap

17. Feed plate

18. Plain washers [2 pcs]

19. Bolts [2 pcs]

20. Work clamp felt

21. Work clamp arm assy

22. Washers [2 pcs]

23. Bolts [2 pcs]

24

. Work clamp arm support shaft

25. Set

screw

assembly and feed plate.

3429Q

91

KE-430B, 430C series

4. ASSEMBL Y

４-１８.

Work clamp arm mechanism (KE-434B, 434C, 435B, 435C, 436B, 436C, 484C)

Align with the screw stop and push down gently from ab

ove while tightening the set screw.

3431Q

d bracket assy

1. Fee Feed bracket guide plate, R

2.

3. Flat screws [2 pcs] Screws [2 pcs]

4.

5. X-feed lever cover

6. Spacers [2 pcs]

7. Retainer assys [2 pcs]

8. Tack length regulator block assy

9. Set screw

10. Rubber cap

1) Turn the Y-feed lever forward as far as i

2) Insert the tack width regulator block assembly and the feed guide slide block into the grove in feed bracket guide plate R so that they face as shown in the illustration, and then install the feed bracket assembly and feed bracket guide plate R.

3)

Pass the Y-feed lever cover through the slot in the arm bed, and then insert the tack width regulator block ass embly into th e ho le in the Y-feed lever.

Seen from below

Y-feed lever

t will go.

Tack width regulator block assy

Feed guide slide

-feed lever

Y cover

block

3432Q

KE-430B, 430C series

92

4. ASSEMBL Y

Refer to “4-20. Work clamp arm mechanism (Applying grease)”

Work clamp arm assembly installation position

(A) When using solenoid-type

work clamp S Pneumatic-type (B) When using solenoid-type

work clamp L

3434Q

Carry out the adjustment in “5-24. Adjusting the home position” before installing the fee d plate.

11. Feed bracket cover

12. Feed plate

13. Plain washers [2 pcs]

14. Bolts [2 pcs]

15. Work clamp arm assy

16. Washers [2 pcs]

17. Bolts [2 pcs]

18. Cylinder support [Pneumatic spec. only]

19. Bolts [2 pcs: Pneumatic spec. only]

After installing, carry out test feed ing and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the work clamp arm assembly and feed plate.

3433Q

3435Q

93

KE-430B, 430C series

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

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INSTRUCTIONS

1. Safety indications and their meanings

2. Notes on safety

3. Warning labels

CONTENTS

１. SPECIFICATIONS

１-１. SPECIFICATIONS

１-２. Standard thread tension

１-２-１. Measuring tension

２. MECHANICAL DESCRIPTIONS ２. MECHANICAL DESCRIPTIONS

２-１. Needle bar and thread take-up mechanisms ２-１. Needle bar and thread take-up mechanisms

２-２. Lower shaft and shuttle race mechanisms ２-２. Lower shaft and shuttle race mechanisms

２-３. Work clamp lifter mechanism

２-４. Work clamp open-close mechanism (KE-432B, 432C)

２-５. Thread wiper mechanism ２-５. Thread wiper mechanism

２-６. Feed mechanism

２-７. Thread trimmer mechanism

２-８. Thread nipper mechanism

２-９. Thread take-up mechanism

３. DISASSEMBLY

３-１. Covers

３-２. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C)

３-３. Work clamp arm mechanism (KE-432B, 432C)

３-４. Work clamp arm mechanism (KE-433B)

. Work clamp arm mechanism (KE-434B, 434C, 435B, 435C, 436B, 436C, 484C)

３-６. Work clamp arm mechanism (BE-438B, 438C)

３-７. Shuttle hook mechanism

３-８. Needle bar mechanism

３-９. Stepping foot mechanism (KE-435B, 435C, 436B, 436C)

３-１０. Upper shaft mechanism

３-１１. Lower shaft mechanism

３-１２. Feed mechanism (1)

３-１３. Feed mechanism (2)

３-１４. Work clamp lifter mechanism (Solenoid specifications)

３-１５. Stepping foot lifter mechanism (KE-435B, 435C, 436B, 436C)

３-１６. Thread wiper mechanism

３-１７. Thread nipper mechanism

３-１８. Thread take-up mechanism

３-１９. Thread trimmer mechanism

４. ASSEMBL Y

４-１. Thread trimmer mechanism (1)

４-２. Thread nipper mechanism

４-３. Thread wiper mechanism

４-４. Thread take-up mechanism

４-５. Work clamp lifter mechanism (Solenoid specifications)

４-５-１. Applying grease

４-６. Feed mechanism (1)

４-７. Feed mechanism (2)

４-８. Upper shaft mechanism

４-９. Stepping foot lifter mechanism (KE-435B, 435C, 436B, 436C)

４-１０. Stepping foot mechanism (KE-435B, 435C, 436B, 436C)

４-１０-１. Adjusting the lowest point of the presser foot

４-１１. Needle bar mechanism

４-１２. Lower shaft mechanism

４-１３. Thread trimmer mechanism (2)

４-１４. Shuttle hook mechanism

４-１５. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C)

４-１６. Work clamp arm mechanism (KE-432B, 432C)

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