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Working basis

Service Instructions 867 - 04.0 - 10/2019 17

3.3.4 Assembling and disassembling the valve cover

Fig. 4: Assembling and disassembling the valve cover

Disassembling the valve cover

To disassemble the valve cover:

1. Loosen the screws (1).

2. Disassemble the valve cover (2).

Important

Make sure not to tear off any cables.

Assembling the valve cover

To assemble the valve cover:

1. Assemble the valve cover (2).

2. Tighten the screws (1).

Important

Make sure not to pinch any cables.

(1) - Screws (2) - Valve cover

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Default Chapter3
- Table of Contents3
1 About These Instructions7
- For Whom Are These Instructions Intended7
- Representation Conventions - Symbols and Characters7
- Other Documents8
- Liability9
2 Safety11
- Basic Safety Instructions11
- Signal Words and Symbols Used in Warnings12
3 Working Basis15
- Order of the Adjustments15
- Laying the Cables15
- Removing the Covers16
- Tilting the Machine Head16
- Assembling and Disassembling the Arm Cover17
- Assembling and Disassembling the Head Cover18
- Assembling and Disassembling the Valve Cover19
- Opening and Closing the Throat Plate Slides20
- Assembling and Disassembling the Throat Plate21
- Assembling and Disassembling the Feed Dog22
- Flats on Shafts23
- Locking the Machine in Place24
- Adjusting the Handwheel into Position26
4 Adjusting the Handwheel Scale27
5 Positioning the Arm Shaft28
6 Toothed Belt Wheels29
- Positioning the Upper Toothed Belt Wheel29
- Positioning the Lower Toothed Belt Wheel31
7 Adjusting the Stitch Length Adjusting Wheels32
- Adjusting the Upper Stitch Length Adjusting Wheel33
- Adjusting the Lower Stitch Length Adjusting Wheel34
- Adjusting the Stitch Length Limit35
- Adjusting the Eccentric for the Forward and Backward Stitches36
8 Feed Dog37
- Adjusting the Feed Dog Position37
- Moving the Feed Dog38
- Moving the Feed Dog Carrier39
- Adjusting the Feed Dog Movement40
- Adjusting the Feed Movement40
- Adjusting the Feed Dog Height at Top Dead Center41
- Feed Dog Lift (Default)42
- Adjusting the Stroke Movement42
- Adjusting the Compensating Weight43
- Feed Dog Lift (Adjustable Stroke Eccentric)44
- Adjusting the Stroke Movement44
- Adjusting the Stroke Eccentric45
9 Aligning the Needle Bar Linkage47
- Aligning the Needle Bar Linkage Sideways47
- Aligning the Needle Bar Linkage in the Sewing Direction49
10 Position of the Hook and Needle51
- Adjusting the Hook Side Clearance51
- Adjusting the Looping Stroke Position52
- Adjusting the Needle Guard54
- Adjusting the Needle Bar Height55
11 Adjusting the Bobbin Case Lifter56
- Adjusting the Lifting Gap57
- Adjusting the Timing for Lifting58
12 Sewing Feet59
- Adjusting an Even Sewing Foot Stroke60
- Adjusting the Stroke Movement for the Walking Foot61
- Adjusting the Sewing Foot Pressure62
- Adjusting the Sewing Foot Lifting Height63
13 Adjusting the Needle Thread Tension64
- Adjusting the Needle Thread Regulator64
- Adjusting the Thread Tensioning Spring65
14 Winder66
- Adjusting the Winder Wheel and the Driver Wheel (Long Arm Machines)66
- Adjusting the Winder67
- Adjusting the Hook Thread Guide70
15 Thread Trimmer71
- Adjusting the Height of the Thread-Pulling Knife71
- Adjusting the Cutoff Curve72
- Adjusting the Cutting Pressure74
- Adjusting Point in Time for Cutting75
16 Short Thread Cutter (KFA)76
- General Information77
- Adjusting the Locking Latch79
- Adjusting the Thread-Pulling Knife80
- Adjusting the Counter Blade81
- Adjusting Point in Time for Cutting83
17 Adjusting the Potentiometer85
18 Adjusting the Safety Snap-On Coupling87
- Attaching the Safety Release Clutch87
- Adjusting the Torque88
19 Machines with Integrated Motor89
- Overview of the Components89
- Disassembling the Drive90
- Disassembling the Handwheel and Handwheel Flange90
- Disassembling the Cover91
- Disassembling the Encoder92
- Disassembling the Stator93
- Disassembling the Rotor94
- Assembling the Drive95
- Assembling the Rotor95
- Assembling the Stator96
- Assembling the Encoder97
- Assembling the Cover98
- Locking the Machine in Place99
- Assembling the Handwheel Flange99
- Assembling the Handwheel100
- Replacing the Fuse of the Sewing Light Transformer101
- Replacing the PCB101
20 Special Machines102
- Machines with Switchable Needle Bars102
- Adjusting the Needle Bar Height102
- Adjusting the Slide104
- Machines with Moving Binder105
- Machines with Edge Trimmer106
- Adjusting the Time for Knife Movement106
- Adjusting the Knife Stroke107
- Adjusting the Blade Overlap108
- Adjusting the Position and Pressure of the Cutting Edges108
21 Programming109
- Activating the Tensioner Lift113
- Activating the NSB114
22 Maintenance115
- Cleaning116
- Lubricating118
- Lubricating the Machine Head119
- Adjusting the Hook Lubrication120
- Servicing the Pneumatic System121
- Adjusting the Operating Pressure121
- Draining the Water-Oil Mixture122
- Cleaning the Filter Element123
- Servicing Specific Components124
- Cleaning the Motor Fan Mesh124
- Checking the Toothed Belt125
- Parts List125
23 Decommissioning127
24 Disposal129
25 Troubleshooting131
- Customer Service131
- Messages of the Software131
- Information Messages131
- Error Messages134
- Errors in Sewing Process137
26 Technical Data139
- Noise Emission139
- Data Overview by Subclasses140
- Permissible Maximum Speeds149
- Requirements for Fault-Free Operation154
27 Appendix155

Stitch Type	Lockstitch
Max Stitch Length	12 mm
Needle System	134-35
Needle Thread Tension	Adjustable
Lubrication	Automatic
Type	Industrial Sewing Machine
Max Sewing Speed	3000 stitches per minute
Presser Foot Lift	20 mm
Power Requirements	230V/50Hz

DURKOPP ADLER 867 Service Manual

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