−
40
−
Standard Adjustment
0.5 mm
b
e
(A)
20 mm
3. DISASSEMBLING/ASSEMBLING PROCEDURE
(1) Disassembling/assembling the hook driving shaft
Hook sleeve
-Removing procedure of the hook driving shaft-
1. Tilt the machine head, and remove the inner
hook stopper and the hook sleeve.
2. Loosen two setscrews each in the bearing bush
and in the pinion.
3. Refer to page 44 and loosen the timing belt.
4. Remove the timing belt from the sprocket.
5. Loosen one setscrew in the hook driving shaft
bearing.
6. Hold the hand pulley by hand and draw it out in
the direction of
e
.
-Assembling procedure of the hook driving shaft-
1. Insert (A) in the direction of
b
mark.
(At this time, pass the timing belt and the pinion
through the hook driving shaft.)
2. Provide a clearance of 0.5 mm between the sprocket
and the pinion, and tighten setscrews in the bearing
bush.
3. Remove the play of inner ring and outer ring of the
two bearings by pressing the hook driving shaft
bearing in the direction of
b
mark, and tighten the
setscrew in the hook driving shaft bearing.
4. Refer to page 44 and stretch the timing belt.
5. Tighten two setscrews in the pinion. (Refer to page
4.)
6. Fix the hook sleeve and the inner hook stopper.
Bearing bush
Sprocket
Setscrew
Hand pulley
Pinion
Timing belt
Hook driving
shaft bearing
Hook driving shaft rear bearing bush
