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Sewing Machine
DDL-9000A
JUKI DDL-9000A Engineer's Manual
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– 60 –
(1
1)
Thread trimming unit
9)
Adjustment of the picker
0 to 0.3mm
When standard adjustments are completed, an
oblong clearance is secured in the picker link
and indispensable return motions (damper
function) can be performed.
In the status after standard
adjustments, the bobbin
thread presser settles almost
in the center of Character U
of the bobbin case.
Standard Adjustment
(0.5mm)
Butt
63
65
Table of Contents
Default Chapter
3
Table of Contents
3
Name of each Component
3
Standard Adjustment
3
Drawing of the Table
4
Screws for Attachment and Positions of External Parts
4
Specifications
5
Name of each Component
6
Standard Adjustment
8
Feed Dog Height and Gradient
8
Timing for the Needle and the Inner Hook
10
Needle and Feed Timing
12
Feed Locus and Phase
14
Bobbin Insertion
16
Bobbin Case with Idling Prevention Spring
16
Adjustment of Inner Hook Presser Position
18
Lubrication
20
Method of Lubrication
20
Method of Lubrication to the Oil Tank
22
Method of Oil Drainage from the Oil Tank
22
Cleaning of the Oil Filter
24
Oil in the Gear Box
26
Placement/Displacement of the Gear Box Cover
26
Cautions for Gear Box Cover Oil During Transportation
26
Adjustment of Hook Oil Quantity
28
Hook Oil Adjustment Procedures
28
Essentials for Hook Oil Adjustments
28
Replacement of the Hook Shaft Oil Wick
28
Adjustment of the Amount of Feeding
30
Adjustment of Forward Feed Stitch Length
30
Adjustment of Reverse Feed Stitch Length (Manual)
30
Adjustment of Reverse Feed Stitch Length (Motor-Power)
30
Optional Switch
32
Adjustment of Normal/Reverse Stitching
34
Adjustment of Feed 0
34
Method by Removing the Gear Box Cover (Standard Adjustment)
34
Method Without Removing the Gear Box Cover (Fine Adjustment)
36
Adjustment of the Feed Dial Section
38
Adjustment of the Reverse Feed Solenoid
40
Adjustment of Feed Changing Shaft Balancer Arm (Asm) Positioning
40
Adjustment of the Presser Lifter
42
Adjustment of the Presser Pressure
42
Adjustment of Thread Release Changeover
42
Adjustment of the Micro-Lifter
44
Adjustment of the Micro-Lifter Unit (Available Separately)
44
Adjustment of Needle Stop Position
46
Adjustment of Upper Stop Position (Stop Position after Thread Trimming)
46
Adjustment of Lower Stop Position
46
Thread Trimming Unit
48
Standard Timing for the Thread Trimming Cam
48
Method of Confirmation
49
Method of Adjustment
49
Correct Position of the Moving Knife
50
Extreme Backward Position
51
Initial Position
51
Adjustment to the Moving Knife Position
52
Standard Adjustments
53
Specific Adjustment
53
Correct Position of the Counter Knife
54
Adjustment of Rise of the Second Thread Tension Disc
56
How to Check the Amount of Rise of the Second Thread Tension Disc
57
How to Adjust the Amount of Rise of the Second Thread Tension Disc
57
Adjustment of the Fixed Knife Blade Tip
58
Replacement of the Moving Knife
60
Replacement of the Knife Thread Guide
62
Adjustment of the Picker
64
Method of Confirmation
65
Method of Standard Adjustments (Adjustment of Clearance)
65
Method of Standard Adjustments (Adjustment of Tip Position)
65
Adjustment of the Drive Arm Stopper
66
Replacement of the Knife Unit
68
Adjustment of the Wiper (DDL-9000A- -WB/OB)
70
Adjustment of Feed Lever Pressure
72
Adjustment of External Parts
74
Adjustment of the Pulley Cover
74
Clearance of the Hand Wheel
74
Adjustment of the Bobbin Winder Unit
76
Replacement of the Bobbin Friction Wheel
77
Adjustment of the Bobbin Winder Driver Wheel Position
77
Maintenance
78
Oil Quantity Check
78
Application of Appropriate Grease
78
Needle Bar Lower Bushing (DDL-9000A-M , A-DS Specification)
78
Feed Bar Mechanisms
80
Face Plate Mechanism
82
Lubrication Mechanism Configuration and Adjustments (DDL-9000A-SS, SH, MA, MS)
84
Thread Take-Up Lever Mechanism
86
Replacement of the Motor
88
Replacement of the Timing Belt
88
Screws for Attachment and Positions of External Parts
90
Dry Hook
91
Cautions When a Dry Hook Is Used
91
Replacement of the Dry Hook
91
Head Section and Control Circuit Connection Diagram
92
Air Blow Type Hook Cooling Unit (Available Separately)
93
Troubles and Corrective Measures
94
Mechanical Parts
94
Sewing Conditions
100
Drawing of the Table
111
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JUKI DDL-9000A Specifications
General
Brand
JUKI
Model
DDL-9000A
Category
Sewing Machine
Language
English
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