7.4 Rocker bolt for the hook drive and left lower shaft bearing
Turn main switch off
- Risk of Injury -
The distance between the needle center and the
beginning of the left lower shaft bearing 6 should
be 39.8 mm and 38.8 mm between the needle
center and the end of the rocker bolt.
The rocker bolt 2 must be pushed on until touching
the face 3 of the lower shaft.
–
Screw out screw 9 and drain the oil from the
housing. Place the machine vertically.
–
Remove the needle, the needle protector and
the hook holder 8 with hook.
–
Loosen clamp screw 11.
–
Carefully pull off the hook drive housing 10.
At the same time slowly turn the lower shaft 3.
–
Screw on gauge 1, order no. 933 80221.
Loosen clamp screw 5.
–
Place the lower shaft bearing 6 on the gauge.
Tighten clamp screw 5.
–
Loosen screws 4.
–
Check to see if the rocker bolt 2 is lying so that
it touches the face 3 of the lower shaft.
–
Remove the grease cap 13 and the oil drip
pan 12.
–
Loosen the set collars 15 and pulley 13.
Slide the lower shaft so that there is a gap of 1
mm between the lower shaft bearing 6 and
rocker bolt 2, that is, that the rocker bolt
touches the gauge.
–
Fasten set collars 15. Set pulley 13. Tighten
screws.
–
Screw in screw 9.
Replace hook drive housing and fill with Esso
SP-NK 10 oil to the upper marking on the
viewing glass.
–
For adjusting the housing, the hook and the
needle protector see Sections 7.5 to 7.11.
6
5
1 2 3 4
13 14
15
8
9
10
11
12
3
15
Содержание 744-122
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