Brother LH4-B800E Service Manual Page 63
- Page / 168
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
LH4-B800E
3 - 8
3. ASSEMBLY
Install the tension release solenoid
q
to the solenoid holder
e
with the two screws
w
.
Pass the tension release solenoid link
t
through the plate
y
. Install the tension release solenoid link
t
to the plunger
u
that was
removed from the tension release solenoid
q
using the plunger pin
i
.
Install the spring
o
to the plunger
u
. Insert the plunger
u
into the tension release solenoid
q
, and then install the plate
y
to the
solenoid holder
e
with the bolt
!0
so that dimension (A) is 13.7 mm.
Install the tension release link
!1
with the shoulder screw
!2
from the face plate side.
Provisionally install the tension release solenoid assembly
!3
with the two screws
!4
. Connect the tension release solenoid
assembly
!3
and the tension release link
!1
with the shoulder screw
!5
.
Adjust the position of the tension release solenoid assembly
!3
so that the tension release link
!1
protrudes from the edge of the
tension stud bracket assembly
!6
on the arm by 19.2 ± 0.2 mm. Then securely tighten the screw
!4
.
Insert the tension release pin
!7
into the tension stud bracket assembly
!6
, and then insert it into the arm. Tighten the screw
!8
so
that the tension discs are open by 0.5 to 1 mm when the tension release link
!1
is pushed in the direction of the arrow (B).
If not using a gauge, insert the tension release pin
!7
into the tension stud bracket assembly
!6
, insert it into the arm, and then
tighten the screw
!8
at almost the center of the screw stop on the tension stud bracket assembly
!6
.
With the tension release link
!1
pushed in the direction of the arrow (B) (Figure C), move the tension release solenoid assembly
!3
so that the tension discs are open by 0.5 to 1 mm, and then tighten the screw
!4
.
3-5. Tension release mechanism
0
1
4
2
3
0
1
4
2
3
0
1
4
2
3
0
1
4
2
3
t
e
q
i
u
y
w
e
!0
o
y
!2
!1
Apply grease to !2
Apply grease to !5
!4
!3
!1
!1
!7
!6
0.5 - 1 mm
Gauge
!8
u
o
(A)
!5
(B)
(Figure C)
19.2 0.2 mm
1.8
17.5
27
- SERVICE MANUAL 1
- CAUTION 2
- Environmental requirements 3
- Installation 3
- Cleaning 4
- Maintenance and inspection 4
- CONTENTS 6
- 1. MECHANISM DESCRIPTION 8
- Direction of 9
- 1-3. Needle zigzag mechanism 10
- 1-5. Feed mechanism 12
- 1-6. Cutter mechanism 13
- 1-8. Lubrication mechanism 15
- Presser foot 19
- Figure A 21
- Figure B 21
- 2. DISASSEMBLY 26
- 2-3. Feed mechanism 29
- 2-4. Bobbin presser mechanism 32
- 2-6. Presser lifter mechanism 35
- 2-7. Needle zigzag mechanism 38
- 2-8. Cutter mechanism 39
- 2-11. Presser bar mechanism 44
- 2-14. Lubrication mechanism 48
- Shaft bush mechanism 48
- Needle zigzag mechanism 49
- Oil tubes 50
- Oil terminal mechanism 51
- Plunger pump mechanism 52
- 2-15. Rotary hook mechanism 54
- 3. ASSEMBLY 56
- BackForward 58
- Apply grease to cam groove i 58
- Apply grease to !0 58
- Press down 58
- 3-3. Feed mechanism 59
- [For long-hole] 60
- [-2 specifications] 60
- 3-4. Bobbin presser mechanism 62
- 3-6. Presser lifter mechanism 65
- 19.6 0.3 66
- Apply grease to !9 67
- Apply grease 67
- 3-7. Needle zigzag mechanism 68
- 3-8. Cutter mechanism 69
- (Screw stop side) 73
- Place onto projection 74
- 3-11. Presser bar mechanism 75
- 3-14. Lubrication mechanism 79
- 3-15. Rotary hook mechanism 86
- 4. ADJUSTMENT 88
- 0.01 - 0.08 mm 94
- 4.5 0.5 mm 96
- LH4-B800E 100
- Approx. 1 mm 101
- Clearance 0--0.5 mm 102
- 0.5 mm0.5 mm 104
- 6 - 7 mm 107
- Reference line A 107
- Approx. 5 mm 109
- 0.1 - 0.3 mm 112
- 0.3 - 0.5 mm 112
- F = 98 N (10 kgf) 113
- 10 - 14 mm 115
- 5. TROUBLESHOOTING GUIDE 116
- (Instruction) 117
- 5-2. Skipped stitches 118
- 1 - 2 mm 120
- 63 64 65 66 121
- 5. Troubleshooting guide 122
- 5-8. Needle thread runout 123
- Check burr on upper 125
- Check burr here 125
- 5-12. Needle breakage 127
- (2) Cutter does not return 128
- 6. ELECTRIC MECHANISM 134
- 6-3. Fuse explanation 136
- 6-4. Connectors 137
- LH4-B800E 6 - 5 138
- Panel PCB 138
- LH4-B800E6 - 6 139
- Circuit board connectors 139
- <Main circuit board> 139
- LH4-B800E6 - 8 141
- LH4-B800E6 - 10 143
- P12 [FAN2] 149
- 1 +24V Special edition 149
- 2 Spare input 149
- LH4-B800E6 - 18 151
- 6-7. ERROR CODE TABLE 160
- LH4-B800E6 - 28 161
- 6-8. Troubleshooting 162
- LH4-B800E6 - 30 163
- LH4-B800E 6 - 33 166
- Control box 167
Related products and manuals for Sewing machines Brother LH4-B800E
Sewing machines Brother 882-W04 User Manual
(376 pages)
(376 pages)
Sewing machines Brother JC-9331 User Manual
(135 pages)
(135 pages)
Sewing machines Brother T-8422A Service Manual
(113 pages)
(113 pages)
Sewing machines Brother 888-X11 User Manual
(25 pages)
(25 pages)
Sewing machines Brother BE-1204C User Manual
(12 pages)
(12 pages)
(28 pages)
Sewing machines Brother BC-2500 User Manual
(19 pages)
(19 pages)
© 2020, manymanuals.com. All rights reserved. | 1.412 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals