Adler 173 Service Manual
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General safety instructions
1. Set of gauges and handwheel positions . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Parts of the set of gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Adjustments in the different handwheel positions . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Adjusting the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Adjustment disk with respect to the arm shaft crank . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Lower timing belt pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Rocker bolt for the looper drive and left bottom shaft bearing . . . . . . . . . . . . . . . . . 8
2.4 Looper drive housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Looper avoid (width of the elliptic looper path) . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 Symmetry of the looper motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7 Looper in the looper holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.8 Loop stroke and needle bar height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9 Needle guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.10 Thrust motion for the feed dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.11 Stroke motion for the feed dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.12 Retaining spring at the looper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.13 Looper thread take-up cam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.14 Thread trimming device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.15 Sewing foot stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.16 Setting the stitch lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3. Setting the top puller feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.1 Synchronisation of the bottom feed and top puller feed . . . . . . . . . . . . . . . . . . . . 22
3.2 Distance between the puller and needle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.3 Raising stroke of the puller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.4 Puller pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.5 Fabric keep-off plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.6 Timing belt tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7 Replacing the puller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.8 Raising and lowering functions of the puller . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4. Adjusting the synchronizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1. Set of gauges and handwheel positions
1.1 Parts of the set of gauges
The gauges li sted below enab l e t he ac c u rate adjusting a nd c he c k i ng of th e c l a s s es 1 71 an d 1 73.
The timing pi n 3 i s i n c orp or a te d i n the accessor i es of every deliv e red machine. It c an be used to lock th e
handwheel po s iti ons A - F that are required for the ma c hi n e ad j us t me nts.
Gauges Order no. Adjustment
Gauge 1 933 735 – Position of the rocker bolt in the looper drive housing
Gauge 2 933 739K – Position of the looper drive housing
Timing pin 3
(accessories bag)
Metering clock 4 171 981 – To measure the looper avoid ( width of the elliptic
Gauge 5 171 975 – Looper inclined by 89° 30
Gauge 6 933 80192 – Symmetrical looper motion
Gauge 8 933 740 – Height of the looper thread take-up cam
Gauge 9
(accessories bag)
Screw 10 933 716 – Spreading s cr ew fo r r ep lac i n g t he ar m s ha ft c ran k , e g
791 1152 – Locking the handwheel positions A - F
looper path) .
Should you already have a metering clock, you will
just need the clamping sleeve 171 984 and the
measuring pin 933 748.
’
933 758 – Thrust eccentric for the feed dog
when modifying the needle bar stroke
1
2
3
6
4
5
8
10
9
5
1.2 Adjustments in the different handw heel positions
For some adjustments the machine must be set in a certain position.
This position is marked by letters on the handwheel and can be locked as follows:
– Turn the handwhee l i nt o t he po s i tion defined for t he ad j us t me nt .
– Slide the ti m i ng pi n 4 i n to th e h ol e of th e machine housin g.
– Turn the handwhee l sl i gh tl y f or w ard and backward un ti l the timing pin 4 c a n b e sl i d i nt o t he r es p ec t i v e
slot of the adjustment disk 1.
– Slot A of the adjustment disk is cut out the deepest.
The depths of t he slots B - F are eq ua l .
Slot Adjustment
A
B – Symmetrical looper motion that is, when turning the handwheel in
C – Position of the lower timing belt pulley
D – Stroke and thrus t e cc en tr i c of the feed dog o n ri g ht - ha nd ma c hi n es
E – Looper thread take-up cam
F – Stroke an d t hr u s t e cc en tr i c of the feed dog o n l e ft -ha nd machines
– The deepest slot A of the adjustment disk at the upper timing belt
pulley is aligned with the groove in the arm shaft crank
reverse direction, the needle point must also be located at the centre
of the needle l ik e i n s l ot C
– Loop strok e
– Needle ba r height
– Eccentr ic fo r th e t op pu l l er feed
Operating dire ct io n
B
4
A F E D
Please note!
Depending on the needle bar stroke, the following adjustment disks are built-in:
Class / Subclass Needle bar stroke Adjustment disk
171-131110 27 mm 171 1012
173-141110 30 mm 171 1512
173-141521 30 mm 171 1512
173-161120 32 mm 171 2012
C
1
6
2. Adjusting the machine
2.1 Adjustment disk with respect to the
arm shaft crank
The deepest slot A of the adjustment disk 1 should
be aligned w i th th e g roo v e 2 i n t he ar m s ha ft c ran k .
(The adjustment disk must be in this posit i on to
assure that a l l ot he r adjustments to be ma de i n t he
other slots are c or re c t. )
Turn off main switch!
- Danger of injury -
Initially, check the factory adjustment using two
locking pins (as an alternative 5-mm-twist drills).
2 3
– Loosen the clamping screws of the clamping
ring. (The clamping ring is located on the left of
the upper tim i ng be l t p ul l e y ).
– Slide the pin 3 into the groove 2 of the arm
shaft crank.
– Turn the handwheel until the timing pin 4 can
be slid into the deepest slot A of the adjustment
disk.
– Push the ar m s h af t c ra nk t o t he r i gh t s o i t is
dead against the arm shaft bearing.
Tighten the screws of the clamping ring.
2.2 Lower timing belt pulley
Turn off main switch!
- Danger of injury -
When positioning the timing belt, make sure that
both screws in slot C are positioned as shown in
the drawing and are thus acce s s ibl e wi t h a
screwdrive r.
4
7
2.3 Rocker bolt for the looper drive and left bottom shaft bearing
Turn off main switch!
- Danger of inj ury -
The distanc e be tw ee n t he centre of the n ee dl e an d
the beginning of the left bottom shaft bearing 6
should be 39.8 mm and between the centre of the
needle and the end of the rocker bolt 38.8 mm.
The rocker b ol t 2 m us t be fl u s h w i th th e f ac e 3 o f
the bottom s ha ft .
– Unscrew the screw 9 and drain the oil in the
housing. Set the machine int o t he up r i gh t
position.
– Remove th e n ee dl e , n ee dl e gu ar d , l o op er
holder 8 with th e l o op er a nd th e t hr e ad
trimming device 7.
– Loosen th e cl a mp i ng s c rew 11.
– Carefully remove the looper drive housing 10.
At the same t i me sl owly turn the bo tt om s ha ft 3.
6
5
– Screw on the gauge 1, order no. 933 735.
Loosen the clamping screws 5.
– Push the bottom shaft bear i n g 6 be s i de th e
gauge. Tighten the cl a mp i ng scr e ws 5.
– Loosen the screws 4.
Check, whethe r th e r o ck er b ol t 2 i s d ead
against the face 3 of the bottom shaft.
– Remove th e g rease cover and th e o i l dri p pa n
15.
– Loosen th e e cc en tr i c 1 3, adjusting ri ng 14 an d
the gearwheel 12 .
Shift the bo tt om s ha ft 3 s u c h t ha t t he di s t an c e
between the bo ttom shaft beari n g 6 an d t he
rocker bolt 2 is 1 mm or the rocker bolt rests
against the gauge.
– Set the ad j usting ring 14 an d t he ec ce ntric 13
tight and align the gearwheel 12. Tighten the
screws.
– Check the r u nn i ng of th e timing belt on th e
bottom timi ng be l t p ul le y. If necessar y, align the
bottom timi ng be l t p ul le y.
– Screw in the screw 9.
Re-mount the looper drive housing and fill with
ESSO SP-NK 10 oil to the upper mark of the
sight glass.
– To adjust the housing, looper, needle guard and
the thread tri m me r, see sect i on s 2.4, 2.5, 2.6,
2.7 and 2.14.
2.4 Looper drive housing
1 2 3 4
7 8 9 10 11
8
12
13 14 15 3
2.4 Looper drive housing
Turn off main switch!
- Danger of injury -
The needle point should point to the centre of the
looper shaft 5 and the bottom edge of the looper
shaft should be pa r al l e l to th e t hroat plate
underside.
1
2
This corresp on ds t o a di s t an c e o f 5 0. 5 m m
between the l oo pe r s ha ft bo tt om ed ge 4 and the
throat plate rest 2.
Remove the throat plate and looper holder with the
looper. Loosen the clamping screw 3.
Align the lo op er d ri v e h ou s i ng suc h th at the looper
shaft rests in the cutout of the gauge 1.
Tighten the clampin g s c rew 3.
2.5 Looper avoid (width of the elliptic looper path)
Turn off main switch!
- Danger of injury -
The looper avo i d m otion is adjust ed c or re c tl y, when
the clearanc e be tw ee n t he l oo pe r po i nt an d n ee dl e
is 0.1 mm during the right-to-left looper motion.
During the left-to-right lo op er m ot i on the point of
the descendi ng needle must rest against the bac k
of the looper, when the l oo pe r an d n ee dl e ar e
positioned as shown in the sketch opposite.
The exact amount of the avoid motion depends on
the needle system and needle size. It must thus be
computed according to the following formula:
E = a + b +0.1 + X
3
5 4
Example for a 9 34 S IN /Nm 110 needle
____________ __ __ __ __ __ ______________ __ __ __
Needle size " a" = 0.7 mm
Looper thick n ess " b " = 1.4 mm
Looper point - n ee dl e c lea r an c e = 0.1 mm
For greater ne ed l e s iz e 110 Nm "X" * = 0.1 mm
Width of the elliptic looper path "E" = 2.3 mm
*X=greater measure "a" for greater needle sizes.
X for Nm 100 = 0 mm
X for Nm 110 and 120 = 0.1 mm
X for Nm 130 = 0.2 mm
To adjust, shift the bottom shaft axially.
To the right: decreasing the width of the elliptic path
To the left: increasing the width of the elliptic path
For the adjustment see next p ag e.
a
x
b
9
To adjust the width of the elliptic looper path proceed as follows:
– Insert a straight and undamaged needle.
Screw in the clamping bushing 2 and insert the
metering cl ock 1 .
– Turn the handwhee l to s et th e l o op er s h af t 7 at
its lowest point. Set the metering clock at the
measuring v alu e 0.
– Then turn the ha nd wh ee l to set th e l o op er sh af t
at its highes t po i nt .
Read the differen ce o n t he me te ri ng c l ock .
Should the measure not be identical with the
computed width of the elliptic path, the bottom
shaft 11 must be loosened.
– In the case of an adjustment i n a x i al d ir ec t i on
the width of the elliptic path changes with a
ratio of 1:2. When thus the bott om shaft is
shifted eg 0.2 mm, the width of the elliptic path
changes by 0.1 mm.
1 2
– Remove th e t hr o at pl a te an d f ee d d og . Set the
needle guard 3 to th e r e ar.
– Loosen the eccentric 9, adjusting ring 10 and
the gearwheel 8.
Push the botto m sh af t 11 into the respe c tiv e
direction u nt i l th e co mputed measure i s
reached.
– Tighten the eccentric 9 and the ad j ust i ng r i ng
10 so that the bottom shaft 11 is set tight. Align
the gearwheel 8 and tighten.
– Loosen the screw 5 and one of the screws 4.
Set a distanc e of 0.1 mm between th e l o op er
point and the needle by shifting the looper
holder 6 (looper point behind the needle).
Re-tighten th e sc re w s 4 an d 5 .
– Check the r u nn i ng of th e timing belt. I f
necessary, align the lower timing belt pulley.
10
3 4 5 6 7
8 9 10 11
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