Machine head
36 Service Instructions 745-35-10 S/745-35-10 A - 02.0 - 04/2017
2. Insert the needle bar (4) into crosshead (9) and clamping ring (10).
The thin side of the clamping ring (10) is facing towards the other
needle bar.
The indentation of the clamping ring (10) is facing towards the top.
3. Do not slide the needle bar (4) any further than to a position where the
three lower coupling ball holes (8) are still below the needle bar linkage (1).
4. Insert the three coupling balls (7) into the lower coupling ball holes (8).
Use grease to prevent the coupling balls (7) from dropping out.
5. Slide the needle bar (4) up.
The lower coupling balls are concealed.
The upper coupling ball holes (6) become visible.
6. Insert the three balls (5) into the upper ball holes (6).
7. Hold the needle bar (4) in position.
8. Press the decoupling bar (13) into the needle bar (4) while pulling the
crosshead (9) down at the same time.
The crosshead is halfway down relative to the upper coupling balls (5).
Important
Needle bar and crosshead must now no longer be shifted as the spring-
loaded coupling balls may otherwise pop out.
9. Slide the clamping ring (10) down along the needle bar (4) until the
annular slot (2) is exposed.
10. Place the two securing halves (3) into the annular slot.
11. Slide the clamping ring (10) up as far as it will go.
The securing halves (3) are positioned in the indentation.
12. Press the crosshead (9) up against the clamping ring (10) as far as it
will go.
This movement will couple the needle bar (4) to the crosshead (9).
13. Screw in the needle holder (11).
14. Tighten the screw (12).
15. Turn the needle bar (4) until the front faces of both needle holders (11)
are in the same plane.
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