Arm Shaft - Husqvarna Saphire Series Service Manual

Dismantling and mounting

Arm shaft.

FOR SAFTEY REASONS ALWAYS DISCONNECT THE POWER CORD FROM THE MACHI-
NE BEFORE REMOVING THE CIRCUIT BOARD AND MAKE SURE TO USE WRIST BAND
AND ESD MAT.
Dismantling
1. Remove the rear cover and the front cover.
2. Remove the tension unit.
3. Remove the bobbin winder.
4. Remove the PC Board.
5. Un-hook the motor belt from the arm shaft.
6. Remove the two screws (A) and the clamps.
7. Push the eccentric bearing up wards, to loosen up the drive belt tension.
8. Lift out the Arm shaft a bit and then pull it towards right through the drive belt and at the same time
disconnect the thread take up and the cross head.
Mounting
1. Make sure the rubber inserts are positioned at the bearing holders on the casting.
2. Enter the arm shaft through the drive belt
3. Connect the sewing heads crossheads tab to the Arm shafts link hole,
4. Connect the sewing heads the thread take-up lever to the arm shafts stud.
5. Place the drive belt on the arm shafts cog wheel.
6. Place the arm shafts bearings into the bearing holders on the casting.
NOTE! Make sure the eccentric bearing's hole is in the front.
7. Fold up the rubber of the inserts and place the clamps on top.
8. Enter the screws (A).
9. Disconnect the upper and lower shaft by loosen the three screws on the arm shafts cog wheel.
10. Hook on the Motor belt.
A
Set thereafter.
1. Belt tension -drive belt
12. Timing of the hook in relation to the needle.
C
B
104 72 79-26
55