Parallel Guiding Of The Needle Bar - Pfaff 937 Instruction Manual

Adjustment
11

Parallel guiding of the needle bar

.05.03
11 - 5
Requirement
Guide bar 5 must be parallel to the needle bar.
5
1
4
3
Fig. 11 - 04
Bring the needle bar to tdc (hole 2).
Loosen screws 1,2 and nut 3.
The largest eccentricity of pin 4 must be facing downwards.
Bring the groove on guide bar 5 into a position in which it rests against eccentric pin 4,
turn eccentric pin 4 in accordance with the requirement and tighten nut 3.
Push guide bar 5 downwards and then upwards as far as possible. Bushing 6 must not
move laterally during this movement (readjust eccentric pin 4 if necessary).
Move guide bar 5 until it rests against eccentric pin 4 and tighten screws 1 and 2.
4
2
2
5
1
2
4
3
3
6
5
1