60
104 72 79-26
Feeding unit step motor
Dismantling
1. Remove rear cover and front cover.
2. Remove the base plate.
3. Remove hook cover
4. Disconnect the Step motor cable from the PC Board and bring it out to the back side.
5. For easier mounting later, take the measurement between the upper part of step motor frame (A) and the
casting(B), and make a note of the height. This may differ from machine to machine.
6. Use a Allen Key 4 mm remove the feed adjusting screw (C).
7. Remove the nut and the spring.
8. Push down the step motor against the casting.
9. Remove the Torx 20 screw (D)on the back side of the step motor.
NOTE! This screw (D) is a left hand threaded Torx 20 screw, to remove it TURN the screw driver clockwise.
10. Un-hook the feed dog carries spring (E), located on the castings left side.
11. Push the feed unit to its most front position.
12. Remove the feed dog step motor unit by lifting it to the right and then up.
Mounting
NOTE! Always check or set the step motors feeding position (18. Basic lenght balance setting ) before
mounting it.
1. Take the step motor and enter the cable through the casting.
7KHFRQFDYHVKDSHGJXLGHEORFNIROORZHUVKRXOGJRRQWKHJXLGHEORFNDQGWKHJXLGHEORFNVÁDWVLGHPXVW
face the lower side of the machine.
3. Before mounting the Feeding Step motor check or set “19 Pre-setting the feed unit step motor”.
0RXQWWKHVWHSPRWRUDQGFRQQHFWWKHJXLGHEORFNDQGJXLGHIROORZHUÀUVWWKHQSXVKWKHPRWRUPRUHWR
the left and position the shaft in the casting.
7DNHWKHOHIWKDQGWKUHDGHG7RU[VFUHZ'WLJKWHQWKHVFUHZÀUPO\
NOTE! TURN the screw driver anti clockwise.
6. Hook on the feed dog carrier spring (E).
7. Push up the step motor.
8. Put in the spring then the screw and the nut on top.
9. Take the 4 mm Allen key and turn in the screw (C).
10. Check the distance between the upper part of step motor frame (A) and the casting (B).
It should be the same as before loosening the screw. Continue until it matches.
11. Mount the cable in the cable grove and then into the clip, push it in the castings opening to the front and
connect it to the pc board.
12. Mount hook cover
13. Mount base plate
NOTE! Use ESD mat and wrist band.
Settings to do
6. Setting the hook cover.
6WLWFKOHQJWKEDODQFHÀQHDGMXVWPHQW
Dismantling and mounting
B
A
D
E
C