Brother RH-9820 Service Manual Page 158
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- Table of contents
- TROUBLESHOOTING
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7. ADJUSTMENTS
RH-9820
149
7-7. Adjusting the clearance between the loopers and needle
If the needle count has been changed, always be sure to check the clearance between the needle and the loopers, and adjust
the clearances if necessary. These adjustments should be made for both the inside sewing position and outside sewing
position.
(Inside sewing position) (Outside sewing position)
Turn the upper shaft pulley (1) so that the tips of both the left and right eye loopers (2) are aligned with the needle center, and
then loosen the set screws (3) and adjust the clearances between the needle and the tips of the eye loopers (2) to 0.01 - 0.08
mm.
* These clearances must be uniform while the looper base is rotating (through 360 degrees). If they are not uniform, adjust
the center of rotation of the needle bar. (The center of rotation is already adjusted at the time of shipment from the factory.)
* After making this adjustment, carry out the adjustment procedures given in “7-9. Adjusting the spreader installation
positions”.
7-8. Adjusting the needle guard
If the needle count has been changed, always be sure to check the position of the needle guard, and adjust the position if
necessary. This adjustment should be made for both the inside sewing position and outside sewing position.
(Inside sewing position) (Outside sewing position)
Turn the upper shaft pulley (1) so that the tips of both the left and right loopers (2) are aligned with the needle center, and then
loosen the screw (5) and adjust the needle guard (3) so that it touches the needle (4).
NOTE:
If it crosses the needle more than necessary, it will place a load on the needle and this may cause the needle to break.
Alternatively, if it does not cross the needle at all, the tips of the loopers will interfere with the needle and skipped stitches
may occur.
0499B0498B
0493B
0492B
0.01 - 0.08mm
- RH-9820 1
- SAFETY INSTRUCTIONS 3
- DANGER 4
- CAUTION 4
- [3] Warning labels 6
- Belt cover 7
- CONTENTS 8
- 1. MACHINE SPECIFICATIONS 10
- 2. FUNCTION SETTINGS 11
- 0708B 0709B 12
- 2-6. Input checking method 24
- 2-7. Output checking method 27
- 3. READING/WRITING DATA 31
- 3-3. Data read/write mode 32
- 4. MECHANICAL DESCRIPTIONS 35
- 4-4. Feed mechanism 38
- 4-5. Presser foot mechanism 39
- 4-6. Cloth opening mechanism 40
- 4-7. Cutter mechanism 41
- 4-8. Looper mechanism 41
- 4-9. Spreader mechanism 42
- <-01> 44
- <-02> 45
- 5. DISASSEMBLY 47
- 5-3. Feed mechanism 50
- 5-3-2. X feed unit 51
- 5-3-3. Y feed unit 51
- 5-5. Spreader mechanism 53
- 5-6. Looper mechanism 54
- 5-8. Looper base mechanism 56
- 5-9. Needle bar mechanism 57
- 5-10. Lubrication 58
- 5-12. Upper shaft mechanism 61
- 5-13. Cutter mechanism 62
- 6. ASSEMBLY 63
- 6-1. Cutter mechanism 64
- B Assemble as shown in the 65
- D Insert the cutter arm pin 65
- 6-3. Zigzag mechanism 68
- Insert into the groove 69
- C Assemble as shown in the 79
- D Place the pulse motor Y 79
- E Belt tension adjustment 80
- (Viewed from the left) 84
- (Viewed from the front) 84
- Measurement 91
- 6-10. Lower shaft mechanism 94
- Should be no clearance 98
- 6-11. Looper mechanism 99
- (Clearance) 100
- (Viewed from underneath) 100
- 6-12. Spreader mechanism 101
- (When at 103
- Clearance： 103
- 6-14. Threading mechanism 104
- 6-15-1. Feed base 106
- (When at maximum retraction) 111
- 6-15-2. X feed shaft holder 113
- (Viewed from directly to 114
- (Viewed from the side) 114
- Base of 114
- 6-16. X feed mechanism 116
- A Assemble as shown in the 117
- Measurement position 121
- 6-19. Covers 124
- <-01 specifications> 130
- A Spring hook installation 132
- <-02 specifications> 134
- F Spring hook installation 135
- (When cylinder is at 137
- 6-23. Routing the harnesses 138
- 6-24. Routing the air tubes 140
- E Inserting the wicks 146
- Maintain a 147
- 7. ADJUSTMENTS 150
- Looper height 151
- 0487B 0488B 155
- Moves to left 156
- Moves to right 156
- 0.01 - 0.08mm 158
- CAUTION 166
- (When using a 173
- 2-pedal foot switch) 173
- 0.3 mm 181
- 184
- Needle plate 186
- value will not be changed 198
- 6. Press the TEST key (6) 200
- 8. ELECTRICAL MECHANISM 206
- 1199B 0692B 207
- 8-3. Description of fuses 208
- 8-4-1. Connector positions 209
- 8-5. Troubleshooting 215
- 8-5-2. Diagnosis flowchart 216
- 8-5-3. Remedy 219
- 9. ERROR CODES 228
- 10. TROUBLESHOOTING 234
- SERVICE MANUAL 236
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