Double needle lockstitch sewing machine repair and maintenance

Needle bar shaking distance of standard values before and after

Jiaogan bushing lower-down 10MM, jiaogan distance from the needle bar is 14mm.

Feeding phase of the standard value

When the needle down on the needle plate when the plane, the second screw on the lower shaft sprocket should be aligned with the engraved lines on the shell, and then hung up timing belt.

Adjustment method: when to change timing belt, axis on agreement with the shaft, as shown in Figure 7, needle and needle plate aligned at the plane, the second screw aligns with the engraved lines on the floor and then install timing belt.

Maximum stitch length adjustment of standard values

Maximum stitch length not length, moving head floor set below the feed limit adjustment.

Adjustment method:

, Feeding amount adjustment: loosen the screws will limit upward (increase) or down (decrease) move adjust.

Second, reverse feed adjustment: loosen the fixing nut and adjusting screw (increasing) or spin out (reducing) Regulation.

Usually normal, reverse feed weight ratio of 10:7.

Shaft removal method

Decomposition:

First, loosen the eccentric feed the 2 fixing screws on the adjusting wheel.

Second, pinch the two Panasonic axis two fixing screws on the gear.

Third, pinch the Panasonic two fixing screws on the shaft washer.

Four, loosen the 2 fixing screws on the pump, remove the plate from the shaft bushing, remove the compression spring and oil pump piston displacement.

Five, took the next sprocket, 20mm to the right, loosen the captive screw on the cam. Remember: don't forget the slider teeth from the lift cam out.

After six under remove the sprocket, pull the shaft from the right.