DURKOPP ADLER 550-12-24 Instructions For Operating Manual page 141

Contents
Part 3: Service Instructions cl. 550-12-23; -24; -26
1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Setting Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Gauge Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Setting the Machine Head
2.1 Adjustment Disk to the Arm Shaft Crank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Setting of the Lower Timing Belt Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Needle Bar Guide
2.3.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.2 Setting of the Guide Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.3 Clearance of the Transport Foot Bar to the Material Presser Bar . . . . . . . . . . . . . . . .
2.4 Setting Wheel and Stop for the Sewing Foot Lift Height
2.4.1 Setting Wheel for the Sewing Foot Lift Height . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 Stop for the Max. Sewing Foot Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Left Lower Shaft Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Setting the Hook Drive Housing
2.7 Needle Avoidance Movement of the Hook (Ellipse Width) . . . . . . . . . . . . . . . . . . . .
2.8 Symmetry of Looper Motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 Hook in the Hook Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 Looping Stroke and Needle Bar Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.11 Needle Guard and Needle-guard Plate
2.11.1 Needle Guard
2.11.2 Needle-guard Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.12 Feed Dogs
2.12.1 Position of the Feed Dogs in the Needle Plate Slot . . . . . . . . . . . . . . . . . . . . . . . .
2.12.2 Height of the Feed Dogs
2.12.3 Advancing Movement of the Feed Dogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.12.4 Stroke Movement of the Feed Dogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.13 Thread Take-up Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.14 Sewing Feet
2.14.1 Timing of the Advancing Movement of the Transport Foot . . . . . . . . . . . . . . . . . . . .
2.14.2 Stroke Adjustment Range and Timing of the Stroke Movement of the Transport Foot
2.15 Sewing Foot Lift
2.15.1 Play in the Lift Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15.2 Height of the Raised Pressure Feet, Lift Limitation . . . . . . . . . . . . . . . . . . . . . . . .
2.15.3 Setting of the Intercept Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15.4 Height of the Pressure Feet Arrested in the Raised Position
2.16 Setting the Multiposition Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.17 Setting the Stitch Regulator Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.17.1 Checking and Setting with a Dial Gauge (Precise Adjustment) . . . . . . . . . . . . . . . . .
2.17.2 Checking and Setting with a Caliper Gauge (Rough Adjustment) . . . . . . . . . . . . . . . .
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