1-55
S-4001 ISBH+I SM 30°
Released: 09/2017
E-mail: [email protected]; webside: amfreece.com
Phone: +420 582 309 146; Fax: +420 582 360 606
E - STANDARD MACHINE ADJUSTMENT
19. THE MAIN CAM CHANGE
1. Loosen the screws
1
and remove the holder
2
.
2. Unscrew the screws
3
and remove the right control
spring
4
and the holder
5
.
3. Loosen the stud
6
and remove the worm gea
hub and the main cam assembly
7
. Dismantle the
assembly.
4. Assemble the main cam assembly according to the
following steps:
a) Install the washer
9
on the barring cam
8
. The
mounting hole
22
must be covered.
b) Install the feed reversing cam
10
by the same
way.
c) Place the stop disc
13
on the feed reversing
cam
10
and fix it using the screws
11
and
12
.
d) Insert the springs
14
into the holes in the stop
disc and install the drive disc spring
15
. Lock it
using two screws
16
.
5. Remove the spring
17
from the pin
18
.
6. Using a grease, place the thrust washer
19
on a
bedplate.
7. Install the main cam assembly
7
and the worm
gear hub on the thrust washer. Lock it by stud
6
.
8. Install the spring
17
on the pin
18
.
9. Install the holder
5
,control spring
4
and tighten
the screws
3
.
10. Install the holder
2
and lock it by screws
1
.
11. Turn the hand wheel to check the clearance on the
main cam - see section E9, point 3.
12. Switch the machine on and check if the machine
stops in the home position - see section E2, E9,
point 1
13. Check the shape of a bar - see E9, point 2.
14. Sew a few buttonholes . The shape of a bar must be
as shown on picture below.
15. If incorrect, tilt the machine head and move the left
shifter arm to the left to obtain correct shape of a
bar (the clearance between the control spring and
the shifter arm spring
21
must approximately be 1.2
- 1.5 mm).