LELY WELGER AP 530 Operator's Manual page 68

24
Figure 37
L
26
Figure 38
21
21
29
29
31
31
Figure 39
60
Timing the needles in relation to the ram
When installing new needles, these must be adjusted before
use (see chapter "Adjusting the needles", page 68).
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
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
If it proves impossible to engage pinion 19 at the specified
position, proceed as follows:



27

28






32
32
AP 530
AP 630
AP 730/AP 830
Trip the knotter mechanism (see "Tripping the tying cycle",
page 36).
Undo the clamping disc on pinion 19 and move pinion 19 in
the direction of the arrow (Figure 33) until it is no longer
engaged with the knotter drive gear 25.
Turn the knotter drive gear 25 (Figure 33) in the direction of
the arrow until the tip of the needle 26 (Figure 38) is level
with the top of the bottom bar.
Jam the knotter drive gear 25 (Figure 33) in position.
Turn the flywheel in the direction of the arrow (Figure 15),
until the tip of the ram 28 (Figure 38) has gone past the
needle tip by around 20 mm on the working stroke. In this
position, engage pinion 19 once again (Figure 33) with
knotter drive gear 25.
Jam the packer and flywheel in position (the relative
positions of packer and ram must not be altered when doing
this).
Undo the clamping disc on bevel gear 20 (Figure 33).
Remove circlip 31 and 32 (Figure 39) from hexagon cross
shaft 21.
Drive hexagon cross shaft 21 out of bevel gear 20 so that
pinion 19 (Figure 33) can be withdrawn from cross shaft 21
and pushed on again moved around by 1/6 of a revolution. If
the gear teeth do not yet engage, keep repeating the
process in the same direction of rotation of pinion 19 until it
engages correctly with knotter drive gear 25.
Drive hexagon cross shaft 21 into bevel gear 20 again.
Tighten the clamping discs on pinion 19 and bevel gear 20.
Refit circlip 31 and 32 to hexagon shaft 21 (Figure 39).
Remove all jamming arrangements.
Turn the flywheel by hand until the needles and the tying
mechanism are in the home position (needle in lowest
position).
Trigger the tying cycle and turn the flywheel by hand until
needles and ram align according Figure 38.
In this position of the ram, check the control measurement L:
L = 20-30 mm
L = 20-30 mm
L = 25-32 mm
LELY WELGER AP 530 AP 630 AP 730 AP 830