Pfaff 3334 - Page 3

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SERVICE

MANUAL

PFAFF

3334

Automatic

Lockstitch

Bortocker

From the library of: Superior Sewing Machine & Supply LLC

Table of Contents

Table of Contents4
Description and Operation7
General Information7
- Purpose of Employment8
- Application Possibilities9
Operation10
- Efficiency Rating10
- Mode of Operation10
- Sewing Cycle11
Mechanical Setup15
- Shuttle Ond Needle Bar Drive15
- Feed Motion15
- Automatic Stop Motion20
- Thread Trimming Action22
Instructions for Repair31
Disassembly31
Assembly32
Adjustment and Check-Up34
- Timing the Shuttle and Setting the Needle Bar Ot Correct Height34
- Timing the Feed Motion40
- Timing the Thread Trimming Action47
- Adjusting the Work Clamp50
- Timing the Stop Motion50
- Timing the Thread Nipper and Adjusting the Thread Tension54
Stitching-Off61
- Sewing Thread61
- Needle61
- Bobbin Winding62
- Needle Threading63
- Threading the Bobbin Case64
- Inserting the Bobbin Case64
Setting-Up65
- Individual Power Drive65
- Bench Power Drive68
- Individually Powered Machine on Power Benching69
Subclass Conversion70
- Changing the Feed Cam70
- Changing the Knife Cam71
- Changing the Work Clamp Feet72
- Changing the Feed Plate72
Trouble Shooting72
- Skipped Stitches72
- Thread Breaking72
- Needle Breaking72
- Heavy Working73
- Irregular Stopping73
Machine Care76
- Cleaning and Oiling76
- Dismantling the Shuttle Race78
Electromagnetic Control79
- Brief Description79
- Key to Symbols Used80
Operating Instructions for X35 and X45 Devices81
- Turning on Master Switch HS81
- Inserting the Work and Operating Foot Switch FS (1St Switch Position)81
- Starting the Machine by Operating81
- Foot Switch FS (2Nd Switch Position)81
- Sewing Cycle and Automatic Stopping of Machine81
Working of Device85
- Master Switch HS85
- Foot Switch FS85
- Solenoid EM85
- Solenoid HM and Switch es87
- Switch SS88
Mounting and Adjustment Procedures88
- Switch es88
- Lever B88
- Solenoid EM88
- Solenoid HM88
Subclass Information92
Subclasses Having the same Gear Ratio92
Subclasses Having the same Knife Cam92
Subclosses Requiring Additional Parts92
Principal Parts Varying from One Subclass to Another92
Special Organizational Parts97
Lock Designs Arranged by Shapes100

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