Hook And Needle Bar; Needle Bar Rise And Clearance - Pfaff 3117 Instruction Manual

14

Hook and needle bar

.21
14

Needle bar rise and clearance

.21.01
Requirement
1. At the right perforation on the left buttonhole seam the needle bar rise must be
2.4 mm. The hook point 1 must be pointing directly at the middle of the needle 2.
2. The lateral clearance between the needle 2 and the hook point 1 must be 0.1 mm at
the right perforation into the left buttonhole seam after the end of the needle bar rise.
Needle rise gauge
3
4
Fig. 14 - 49
Bring the machine into buttonhole seam position.
Engage the stop motion device.
Bring the needle into its BDC on the right perforation of the left buttonhole seam.
Mount the C-clamp 3 on the needle bar 4.
Position the 2.4 mm needle rise gauge, Part no. 61-111 600-09 between the C-clamp 3
and the stop of the needle bar 4.
Loosen the C-clamp 3, pull it upwards as far as possible and retighten it.
Remove the needle rise gauge.
Turn the drive pulley in its direction of rotation until the C-clamp 3 is touching. The needle
bar rises 24 mm.
In this position, loosen screws 5 and turn the hook sleeve 6 on the hook shaft in
accordance with requirement 1 and move it in accordance with requirement 2.
Tighten screws 5.
Loosen and remove the C-clamp 3.
2
1
Adjustment
0.1 mm
6
5
14 - 51