48
30. Changing the hook race assembly
Removal:
● Disconnect the plug from the electrical outlet.
● Fold up the carrying handle.
● Turn out both arm cover retaining screws and remove arm cover.
● Turn out both stand cover retaining screws and remove stand cover.
● Loosen both face cover retaining screws and remove face cover.
● Remove the detachable work support (accessory box) by pulling it to the left.
● Lay the machine on its back.
● Turn out the five baseplate retaining screws and remove baseplate.
● Turn out both free-arm cover retaining screws.
● Remove free-arm cover.
● Turn out both needle plate retaining screws and remove needle plate.
● Disconnect pull spring on gear housing cover 18 (fig. 30).
● Take out both retaining screws 68 of gear housing cover and remove gear housing cover.
● Loosen both Allen screws 27 on the hook shaft crank.
● Loosen screw 24 on hook shaft bush 28.
● Move hook shaft 25 to the right, until toothed segment 61 is out of mesh.
● Loosen hook race screws 20 and 22 and remove the hook race assembly to the top.
Refitting:
● Refit the hook race assembly.
Note:
The hook race must now be adjusted in the following order:
Adjustment of the hook clearance to the needle and to the thread puller plate.
Adjustment of the toothed segment to the bevel gear.
● Then adjust the hook as described in the service manual.
● Carry out an electrical safety test in accordance with VDE 0701 using testing appliance
ABB Metrawatt 5013.
To Next Page
Loading...
