Welger AP 42 Operating Manual page 16

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!~" 2'
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Needle Adjustment
Pull off wi,re,
trip tying mechanism (see fig. 7).
Turn flywheel to raise needles to topmost po-
sition.
IMPORTANT: Never turn flywheel in reverse
with tying mechanism tripped.
Distance
A between needle end twister hock
shaft shourld be 0-2 mm (fig. 48).
Note: Re-shape needles only i,f no more thon
slightly bent end take cera to restore original
shape.
Distance B between needle roller end shear
lever should be between 3-8 mm (fig. 48). If
Distance B is less: Slacken bolts 1 (fig. 49) turn
out holt 2 end run down holt 3 to set needle
height. Secure holt 2 end fighten bolts 1 again.
B
If clearance is exceeded: Slacl<en bolts 1, set
needle height by turning out holt 3 end running
down holt 2. Then secure holt 3 end fighten
borlts 1 again.
Distance C tram needle head to twister hock
shaft should be between 80-11 0 mm (fig. 50). If
any difference, adjust needle lift rod as shown
in (~ig. 29).
When operating stationary all dirt end short
baling material has to be cleaned away from
underneath the needle.
Shear Lever Adjustment
Note that shear lever 4 clamps down the wirB
alternaterly on left end right (fig. 51).
If wirB is to weakly clamped down, watch baler
at werk to see on which lever side the wirB is
pulled away. Let machine run on unHI needle
has once again placed wirB on that side of
lever 4 where it is not held firmly. Now stop
machine end glocken lock nut 5 (or 6), run down
set screw 7 (or 8) by '/2 to 1 JulI-turn until wirB
is firmly held, then secure again with nut 5 or 6
(fig.51).
of TwisterHook
Timing
Ali.gn marking holes (see arrows in fig. 52) on
both chain wheels end the marking bores under-
neath, then lock chain wheels with 4 mm cf) pin
slid through the bores. Now
correctly located wheels.
Needle to Ram Timing
If new needles have been fitted they should be
adjusted first (see setting of needles).
Disengage knotter (see fig. 9), open side cover
5 (fig. 25). Remove locking bracket 9 from pinion
10 (fig. 53). Loosen clamping washer on pinion
10 end move pinion 10 sideways in direction
of arrow until it is disengaged out of knotter
drive geer 11. Turn knotter drive geer in di-
rection of arrow
(fig. 54) are flush with top edge of bottom bar
in bole chamber 13. Block knotter drive geer 11.
Turn flywheeL in direction of arrow until point
of rom 14 has post the point of needle 12 by
about 25 mm on its working
pinion 10 back info knotter drive geer 11. If it
is not possible to
above mentioned position, remove guard out
of twine box, moye circlip 13 (fig. 23) on hex.
shaft about 300 mm to the left. Block lead end
flywheel. Shift hex. shaft 14 out of bevel geer 15
(fig. 24) after loosening olamping disk 18 until
pinion 10 (fig. 53) can be pulried out of hex.
shaft end can be moved '/6 of a turn end be
pushed barck on to hex. shaft. If pinionis
not matching repeat this operation until pinien
10 is matching knotter drive geer 11 perfectly.
Push hex. shaft 14 back info bevel geer 15, (fig.
(24), tirghten clamping disk 18 replace .Iocking
bracket 9 end clamping washer against pinion
10 end tighten (fig. 53). Remove a,1Iblockings.
Now check Distance D
in this position:
Clearance between
tip 14 must now be 25-40 mm.
28
fit chain ovar
until point of needles 12
stroke. Engage
engage pinion in the
still
(iiig. 54) with rom located
needle tip 12 and rom
~
lig. 52
lig.53
fig.54
29