Toothed Belt For Hook Drive - Duerkopp Adler 650-16 Service Instructions Manual

Adjusting the toothed belt

11.2 Toothed belt for hook drive

Correct setting
On the front loop, the toothed belt tension is 55 Hz.
The toothed belt is centred on the top belt pulley and on the large belt pul-
ley.
The toothed belt has a clearance of 1 mm each to the securing rings on
the lower belt pulleys.
Cover
• Access to the underside of the machine ( Chap. 4.5.1, p. 10)
• Remove the fabric base and column cover ( Chap. , p. 12)
Figure 24: Toothed belt for hook drive - removing the cover
Adjusting steps
1. Release the fastening screws (2) on the front and back of the hook
2. Slightly raise the cover (1) and pull off to the right.
Service Instructions 650-16 Version 00.0 - Last Updated 09/2012
Warning
Risk of injury
Crushing hazard due to moving parts
Switch off the sewing machine before you adjust the
toothed belt for the hook drive.
1
(1) - Cover
(2) - Fastening screws
toothed belt cover (1).
Important: Do not loosen screw (3). If you loosen screw (3), you must
readjust the hook ( Chap. 6.1 Adjusting the looping stroke position
and hook spacing, p. 19).
(3) - Screw (do not release)
33