2A. Adjustment Of Feed Dog In Sideways Direction For Pfaff Expression 2024 - 2044 - Pfaff expression 2014 Service Manual

2a. Adjustment of feed dog in sideways direction for Pfaff expression 2024, 2034 und 2044
Requirement:
The distance of the feed dog to the right and left edges of the feed slot must be equal (fig. 2).
Check:
Carry out a visual check of the feed dog position.
Adjustment:
Tilt the machine toward the rear.
Unhook spring 3 (fig. 5).
Unscrew and remove screw 4.
Turn the handwheel until lobe of drive eccentric 5 is positioned at the rear.
Fold feed regulator 6 downwards and remove this and link 7 from the connecting bar rod to the left.
Remove slide block 8 with spring to the right.
Loosen screw 22 (fig. 4).
Pull out pin 23 to the right.
Unhook spring 9.
Loosen screws 10 and 11.
Re-position the driving shaft together with the two cylindrical pins 12 and 13 sideways without play until
the feed dog is positioned in the middle of the feed slot.
Tighten screw 10.
The pressure of the right cylindrical pin must be 1 kg.
Tighten screw 11.
Remove the needle plate.
Use your finger to pull the feed dog to the front, then release it.
The complete feed driving shaft 14 must slide slowly to the rear.
Fit pin 23 without any play and tighten screw 22.
Move the top feed lever assembly to the front and rear.
The complete top feed lever assembly must move easily and without binding (if necessary remove
cause of binding).
Re-position crank pin 24 with pull rod 26 sideways until the complete top and bottom feed moves easily
(fig. 6).
Tighten screw 25 and check again whether the feed system moves freely.
Loosen screw 15.
Push slide lever shaft 16 complete with stepping motor 15 about 1 mm to the right.
Push slide block 8 with spring onto the pin and install it in slide way 13 in the correct curve radius.
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