JUKI DDL-555-2 User Manual

11. Adjusting the clutch gap
When the friction disc or brake friction disc begins to wear off, the motion of the lever gets
bigger until the clutch is in and the stroke of the treadle gets more frequent and the operation
becomes little difficult. When the movement of the tip of the lever becomes 15~20mm, adjust it
as follows:
After loosening the set screw M6xl0 ® which is setting the brake, loosen the lock nut (D
which is setting the 2 bolts M6x30 ®.
Then, turn the the M6x30 ® toward right (1mm per rotation), close in the clearance, and
adjust so that the clearance becomes about 0.5~lmm. Judge this by moving the motor lever and
watch the movement of the main shaft of the motor (2).
During this adjustment, repeat the in and out of the clutch by means of the motor lever and be
careful to see that the brake friction disc does not lean to one side. After the adjustment, lightly
push the lever toward the brake side and make the bolts M6x30 ® contact the brake. Next, firmly
tighten the set screw M6xl0 ® again and at the same time firmly set the lock nut which is setting
the bolt M6x30 ® .
If the brake friction disk is slanted, it will emanate a peculiar crying sound. If this happens,
insert the power source into the motor, and by repeating the in and out of the clutch, adjust the
bolt M6x30. This sound will disappear,
Also, if the clearance is closed up, the brake must be put on while the main motor is rotating,
inviting scorching of the motor or the fuse might be blown up. Be certain that the clearance is
adjusted to 0.1~lmm always.
0.5 ~ 1mm
set to 0.5 ~ 1mm
- 10 -
0.5 ^ 1mm
From the library of: Superior Sewing Machine & Supply LLC

JUKI DDL-555-2 Specifications

General

Brand	JUKI
Model	DDL-555-2
Category	Sewing Machine
Language	English