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BE-438B
Brother BE-438B User Manual
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KE-430B, 430C, 431B, 431C
KE-432B, 432C, 433B
SER
VICE MANUAL
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
2
Table of Contents
Default Chapter
2
Safety Instructions
2
Maintenance and Inspection
4
Table of Contents
6
1 Specifications
8
Feed
8
Thread Trimmer
8
Standard Thread Tension
12
2 Mechanical Descriptions
14
Needle Bar and Thread Take-Up Mechanisms
14
Lower Shaft and Shuttle Race Mechanisms
16
Work Clamp Lifter Mechanism
17
Work Clamp Open-Close Mechanism
19
Thread Wiper Mechanism
20
Feed Mechanism
22
Thread Trimmer Mechanism
24
Thread Nipper Mechanism
26
Thread Take-Up Mechanism
28
3 Disassembly
29
Covers
29
Work Clamp Arm Mechanism
31
Work Clamp Arm Mechanism
32
Work Clamp Arm Mechanism (KE-433B)
33
Work Clamp Arm Mechanism
34
435C, 436B, 436C, 484C)
34
Work Clamp Arm (BE-438B, 438C)
36
Shuttle Hook Mechanism
37
Needle Bar Mechanism
38
Stepping Foot Mechanism
39
(Ke-435B, 435C, 436B, 436C)
40
Upper Shaft Mechanism
40
Lower Shaft Mechanism
42
Feed Mechanism (1)
44
Feed Mechanism (2)
46
Work Clamp Lifter Mechanism
48
(Solenoid Specifications)
48
Thread Wiper Mechanism
51
Thread Nipper Mechanism
54
Thread Take-Up Mechanism
56
Thread Trimmer Mechanism
58
4 Assembly
61
Thread Trimmer Mechanism (1)
61
Thread Nipper Mechanism
63
Thread Wiper Mechanism
66
Thread Take-Up Mechanism
69
(Solenoid Specifications)
72
Ke-432B, 432C
74
Be-438B, 438C
74
Applying Grease
76
Feed Mechanism (1)
77
Feed Mechanism (2)
81
Upper Shaft Mechanism
83
Needle Bar Mechanism
89
Lower Shaft Mechanism
90
Thread Trimmer Mechanism (2)
93
Shuttle Hook Mechanism
94
Work Clamp Arm Mechanism (KE-433B)
98
Work Clamp Arm Mechanism (KE-434B, 434C, 435B, 435C, 436B, 436C, 484C)
99
Covers
104
5 Adjustment
106
Adjusting the Needle Bar Height
106
Adjusting the Needle Bar Lift Amount
107
Adjusting the Driver Needle Guard
108
Adjusting the Needle Clearance
108
Adjusting the Shuttle Race Thread Guide
109
Adjusting the Clearance between the Shuttle Hook and Bobbin Case Holder Position Bracket (KE-484C)
110
Adjusting the Work Clamp Lift Amount
111
Adjusting the Work Clamp Lift Amount
112
435B, 435C, 436B, 436C, 484C)
112
Adjusting the Button Clamp Lift Amount
113
Work Clamp Pressure Adjustment
114
Adjusting the Holding Pressure
114
Work Clamp Closing-Distance Adjustment
115
Adjusting the Position of the Button Holder
116
Work Clamp Adjustment
116
Changing the Work Clamp Lift
117
Adjusting the Thread Wiper
118
Adjusting the Thread Take-Up Amount
121
Adjusting the Movable Knife
123
Adjusting the Position of the Thread Trimming Link Mechanism
129
Adjusting the Backlash
130
Adjusting the Presser Solenoid Position
131
(Solenoid Specifications)
131
Adjusting the Sensor Perceive Plate Position
132
(Solenoid Specifications)
132
Adjusting the Home Position
133
Adjusting the Needle up Stop Position
136
Adjusting the Tension of the Upper Shaft Timing Belt
136
Checking the Head Position Switch
137
Work Clamp Interchangeability
138
435B, 435C, 436B, 436C, 484C)
138
Adjustment of Air Pressure (Pneumatic Specifications)
139
Adjustment of Inner Clamping Device
139
6 Troubleshooting
140
7 Optional Parts
143
8 Electric Mechanism
145
Precautions at the Time of Adjustment
145
Components Inside the Control Box and the Operation Panel
145
Fuse Explanation
146
Connectors
147
Explanation of the DIP Switches
154
Explanation of the Memory Switches
157
(Ke-430*, 431*, 432*, 433B, 434*, 435*, 484C, Be-438*)
157
Explanation of the Memory Switches
162
Setting the Work Clamp Mode
166
Checking the Input Sensor and DIP Switch Input
168
Checking the Input Voltage
170
Clearing All Memory Settings
171
Confirming Software Version
172
Table of Error Codes
174
Troubleshooting
178
Control Circuit Block Diagram
197
4
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Brother BE-438B Specifications
General
Brand
Brother
Model
BE-438B
Category
Sewing Machine
Language
English
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