Device Components; Trouble And Corrective Measure - JUKI MOL-254 Engineer's Manual

[2] Device components

(1) Trouble and corrective measure

Trouble
Belt loops cannot be cut.
Belt loops cannot be cut neatly.
Cross cutter fails to cut belt loops at the center.
Cause (1)
The loop cut knife fails to cut belt loops
sharply.
The loop cut knife fails to properly engage
with the counter knife.
The loop cut cylinder fails to move.
The loop cut cylinder does not move
smoothly.
Blade is worn out.
Worn-out or broken blade of the counter knife
The position at which the cross cutter cuts
belt loops is not correct.
The belt loop guide plate is shifted.
Cause (2)
The moving knife fixing screw is loosened.
Solenoid valve has broken. Or, the solenoid
valve connector is disconnected.
Adjustment of the lower position sensor of
the loop cut knife cylinder is improper.
Checking order and adjusting procedure
Grind or replace the knife.
Tighten the moving knife fixing screw.
Replace the solenoid valve. Check the connection of the connector.
Re-adjust the lower position sensor of the loop cut knife cylinder to
the proper position.
Grind or replace the blade.
Grind or replace the counter knife.
Adjust the position of the cross cut knife referring to the item
"Changing the width of belt loops".
Adjust the belt loop guide referring to the item "Changing the width
of belt loops".