Global US 35800 Parts list manual

GLOBAL
us
35800
Instruction & parts manual
www.globalsew.com
[email protected]

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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SAFFTY
RU
LES
1.
Before
pL
i!ling the machines d
1scribed
in
this mar.ual into service.carefully read
the
instructions.The
start
ing
of
each
m
ach
in
eis
on
ly
permitted
aftertaki
ng
notice of
the
in
struct
i
ons
and
by
qua
lifi
ed
operators.
IMPORTANT!
Before pulling the machine into service.al
so
read
the
safety rules
and
instructions
from
the
motor supplier.
2.
Observe
the
national safety rules valid for your country.
3.
The sewing machi
nes
described
in
this instruction manual are prohibited
from
being put into service
until ithas been ascertained that
the
sewing units which these
sewing
machineswill be built into.have
conformed with the
EC
Council Directives (89/392/EEC,Annex
11
B).
4.
All safety
dev
ices
mu
st
be
in
position when
th
e machine is ready
for
wo
rd
or
inoperation.Operation of
the
machine without
the
appertaining safety devices is prohibited.
5.
Wear safety glasses.
6.
In case ofmachine
con
versions
and
changes a
ll
va
lid safety rules
must
be considered.Conversions
and
changes are made at your own risk.
7.
The warning hints
in
the instructions are marked with one ofthese
two
symbols:
8.
When
doing
the
following the machine
has
to
be disconnected from
the
power supply byturn
in
g off
the
main
switch orbypulling out the
main
plug:
8.1
When threading needle(s),looper,spreader etc.
8.2
When replac
ing
any parts such as needle(s), presser
foot,
throat
plate,
looper,
sp
reader, f
eed
clog,
needle guard,folder,fabric guide etc.
8.3 When leaving
the
workplace
and
when
the
workplace is unattended.
8.4 When doing maintenance work.
8.5 When
using
clutch motors without actuation lock.wait until the
motor
is stopped totally.
9.
Maintenance.repair
and
conversion work (see item 8)must be done only bytrained technicians or
special skilled personnel under consideration
of
the instructions.
10.
Any
work
on
the
electrical equipmentmustbe done by
an
electrician
or
underdirection
and
supervision
ofspecial skilled personnel.
11.
Work on parts and equipment under electrical power is not permitted. Permissible exceptions are
described
in
the applicable sections ofstandard sheet D
IN
VOE
0105.
12. Before doing maintenance and repair work on the pneumatic equipment, the machine has to be
disconnected from the compressed air supply. In case
of
existing residual airpressure, after
disconnecting form compressed air supply (I,e.pneumatic equipment
with
air tank),the pressure has
to be removed by bleeding.
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Contents
1 Identification of the machines ............................ 1
2 Cl
ass de scription ....... ............ ....... .... ..... . ..... ... 1
3
Sty le of ma chines ..... . ..... ............ ...... ... .... ....... 1
4 Illustrations .:.....
.......... . ............. ....... .... .. ... .. .. 2
5 Id
ent if ying parts ............. . ............... . ........... .... 3
6
Needle s .......... ... ........... ...... ................. . ....... 3
7 D
esc ription ........... . ....... .... .... .......... ... ... .. ..... . 3
8
Terms
....... .. ................. ......... ...................... 3
9
Needles ....... ... ... .. ..................... ...... ... .... ..... . 4
10
Lubrication .......... . ....................................... . 4
11
Threading ........................ .... ......................... 7
12 Adjusting instructions
... .... ......... ..... .... ..... . ....... . 7
13
Torque requirements . .... .......... .. .... . ........... ...... 7
14
Sync hr on ising needle and l oo per m ot ions ....... ..... 7
15
Tig htening needle head ................... ...... ........... 9
16 Aligning needl
es in throat plate sl ots ... ........ .. ...... 10
17
Center ing the cy lind er .... ........... .. ...... .... ........... 10
18
Setting the loop er ............ ..... ........................... 10
19
Setting th e loop er (cont) ........... .......... . ...... .... .... 11
20 Sett ing height of needle ......... . .......... . ..... .......... 11
21 Set ting the feed dog for plain f eed ... ....... .... .........
12
22
Setting the feed dogs for differential f eed ......... ..... 12
23 Setting- the feed dogs for differential f eed (cont) .. .... 13
24 Changing stitch leng th ..... . .............. ........ .. ... .. .... 14
25
Sett ing rear needle guard ....................... . .... . ..... 14
26
.Rr esse r foot and presser bar adju stment ............... 15
27
Upper feed roller ad ju s tm ent ... .... .. ..................... 16
28 Upper feed roller ad ju s tm e nt (cont) ....... ... ... ...... ..
16
29
Thread ten sion and release ... ........ .................... 17
30 Oifferential control ........ ...... .... ........... ..... ... ..... ..
18
31
.v,
Setting needlethread tak e up and frame eyelet ...... 18
32
Looper thread take-up ad ju stment .................. ..... 18
33
Fo ld er adjustment ....... ..... ........ ...... .. .... . .... ....... 19
34
Air blower tube adju stme nt ...... :· .............. .. .. . ... .... 19
Main frame , cast-offplate, eye let s, miscellaneous covers and
bushings ...... .. :.: ...................... ... ........... 20
Folder, cy lindercovers and bushings for differentialfeed
...... .. ........... ...................... ............. --· .......... 24
Folder, cy lind er covers and bushings for plain feed ......
28
Detachable head assembly .. .......... ... ........ ....., ... .. .. .
32
Oiling, needle l eve r, cranks haft and main shaft parts ...
36
Pla in feed bar , feed lift & feed drive components for plain feed
.......... ...........·· ··· ·· ·· .. ......... .......... ....... .. 38
Differential feed bar, main feed bar , feed lifteccentricassembly
for differential feed ...... ... ... .... .... ..............
40
Loopers , loop er holders, feed drive components and looper avo id
components for differential feed ..... .. ...... 48
Upper roller feed , foot lift er and thread tension parts....
50
Pulley , cr ank shaft, clutch a nd c lut ch driving mechanism
......... ...... .. .......... .. .. .. .... .. .................. 54
Sew ing part s ....... ........ ..... .................................. ..
58
Thread stand .. ... ......... .. ..... . ...... . ...... ................. ... 60
Accessor i es ........... .... ... .... ..... ............... ... .. .......... 62
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IDENTIFICATION OF MACHIN'ES.
Each machine is identified by a style numberwhich
is
stamped into thestyle plate affixed to the middle
of
the machine
under
the tension assembly.
The serial number
is
stamped in the casting at
tl1e
right rear
L1ase
of
the machine.
CL
AS
S DE
SC
AI
PTON
High speed.Feed-off-The-Arm High Thr
ow
Machines.Twoand Three Needle,Left Needle In Front.Light
Weight PresserBar Mechanism.Adjustable LooperAvoid.Space In Front
of
Needles8"(203.2mm),Single
Disc Looper Thread Take-up.Automatic Enclosed Type Oiling System and FillerType Oil Pump.Visual
SightOil
Ac
ti
on
and SupplyGauges.
S
TYLE
OF
MA
CH
IN
ES
35800DNU DOUBLE
LAP
SEAM .Three needle, high capacity ,differential feed with upper driven
rollerfeed (.468\NIDE).-Typical Application-For in and out seaming on heavyweightdenim
garments.Seam Specification
401
LSC-3.Standard gauge Numbers 8(1/8",3.2mm) and9
(9/64",3.6mm).Recommend needle 130GS,size 140/054.Maxlmum recomme
nded
speed
4500R.P.M...094 step sewing parts. 468(15/32,11.9mm)narrow roller.
35800DRU DOUBLE LAP SEAM.Three needle.high capacity,plain feed.upper feed,upperdriven.
rollerfeed,FeedDogshave higher teeth on fro
nt
-Typical Application-For seat seaming.in
and out seamson medium to heavyweightdenim garff\flnls.Seam Specifications 401LSC-
3,Standard gauge Numbers 8(1/8",3.2mm)and 9(9/
64
",3.6mm).Recommended needle
130GS.size 140/054.Maximum recommended speed 4500R.P.M
...
094 ster ewing parts...
468(15/32.
11
.9mm) narrow roller.
-1-·
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ILLUSTRATIONS
This manual ha s been arranged lo si mplif y ordering repair parts.E xp loded views of various sections of
the mechanism are shown so that the pi:lrts may be seen in t he ir actual positi on in the mach ine. On the
page opposite the illustration will be found a listing of the parts wi th their part numl)ers,descriplion and
the number of pi eces required in the particular view be ing shown.
Numbers in the first column are ref erence numbers only ,and merely indicate the position of the part in
theillustration.The reference
number should never be used in ordering parts.Always use the part number
listed in the second column.
Component parts or sub-assemblies which can be furnished for repairs are indicated by indenting their
descriptions
under the description of the main sub-assembly.As an example referto the following text:
9 A3588-314
10 A3588-373
11 A3588-082
Gask et .. . .. ............................3
Screw
..... .............. .... ............/1
Top Cover.front .... .. ......... .. 1
It will
be noted in the previous example that the cam foll ower ,bushing and cam guide and the upper
looper drive shaft are not Iisteel. The reason is that replacement of these parts i ndividually is not
rec ommended ,so the complete upper looper.drive shaft assemblyshould be ordered.
When a part
is common toall machines covered in this manual.no specific usage will be me ntioned in the .
~~t
description,However,when the parts for the various machinesare not the same.t he specific usage will be
; mentioned in the description and ,ifnecessary.the difference will be shown in the il _l ustration.
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IDENTIFYING PARTS
Wherethe construction permits,each p ar t is marked;with its part number.On some ofthe smaller parts
and
on those where construction does not permit,an identiflcali-On does not permit .a n identificati on
letter is marked in to distinguish the partfrom similar ones.
PLE . ASE N_OTE: Part numbers represent the ~ame part ,regardl_ ess ofwhich manual th ey appear. On all
orders please include part number ,name and style ofmachi ne for which the art was ordered.
NEEDLES
Each needle has both a type and size number. The type number denotes the kind of shank , point,
length, groove finish and other details. The size number.stamped
on the needle shank; denotes the
largest diameter ofthe blade mepsured between the
~hank and the _ eye , Colle~tively the type number
and size number represent the complete symbol which is given on the label of all need les packed and
sold
by our company . .
OESCRJ PTI ON,
130GS
$hcirt:ctouble groove,struce groove.ball eye ,spotted, governmentpoint ,chromium. plated-
• • • • • h • •· ;·_ > •'}• •·' • • • • :
Size ava ilable 080/032,090/036,100/040,110/044,1 25/049, 140/054,150/060.
To have needles promptly and accL1rate ly filled, an empty package ,a needle sample ,or
the type
and sizenumbershould be forwarded. Use the description on the label .A complete
order should read asfollows: 100 needles.type 130GS,size 125/049 ".
TE R MS,
Prices are net cash and subjectto change without notice.A cha r ge is mad eto cover postage and insurance.
-3-
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NeedleType Description Sizes Available
130GS Short double groove,slruck groove.ball
080/032 , 090/036
eye.spotted,governmentpoint,c t1rorniurn
1 00/040, 12 5/04 9
plated. 140/ 054, 150/060
Tab le 1
NEEDLES
Selection of proper needle size is determinect bysize of thread used ,Thread should pass freely through
theneedle eye
in orderto produce a good stitch formation.
Eachneedle has both a type and size number·.The type number denotes the kind ofshank ,point
,l ength,
groove.finish and other details.T
he size number.stamped on the needle shank.denotes largest diamet er
of blade,measured midway between shank and eye.Collectively, type and size number represent the
complete symbol which
is given on the label of all needles packaged and sold by our company . See
"STYLE OF MACHINES" for the standard recommended needle type &size for your machine .
To have needle orders promptly and accurately filled ,an empty package ,a sample needle ,or the type
and size numbershould be forwarded.Use the description
on the label .A complete order would read:
"1000 Needles,Type 130GS,Si ze1 40/054''.
L UBRICAT I ON
The oil has been drained from the machine before shipping and the reservoirs must be filled before
beginning to operate. Use a straight mineral oil with a Saybolt viscosity
of 90 to 125 seconds at 100"
Fahrenheit. Part
No .28604R.
Oil is filled atoil caps (A&D,Fig.1).The level is checked at sight gauges(B) and (E).Maintain the oil level
between the red lines
of the gauges.
The machine is equipped with a continuous running rotary driven oil pump.The action of the oil can be
observed through oil sight(A} and (D) in
t11e front and baci< lop covers.
-4-
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THREADING & OILING, FOR PLAIN FEED
1
I or 2, drop!!_ or
oll'lWlce o wee!<
I /
I
\ I
' 'V'~ /
"'--23 1 , ✓
~-- _J
(~&:
"-.._--/
A OIJ Flll Ccip &Oil Sight
8 011 Lov~I Gcige
C Pump Primer Sc r ews
D OilFIii Cop & Oil $ight
E Oil Le11el Goga
F Arm Oil Drain Pl ug
G Looper Position Knob
FI G.1
-5-
MIN I MUM OILLEVEL
MAXIMUM Otl LEVEL ---'
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THREADING & OILING FOR DIFFERENTIAL FEED
I or 2 drops or
oiltwice oweek
A Oil FillCop &Oil Sight
B Oil Love! Goge
C Pump
Pr i mer Screws
DOil Fill Cop & Oil Sigh\
E OU Level G9ge
FArm Oil Drain Plug
G LooperPosition
!< nob
:"=-;,,.._{;t=~-~":.~ =
----~ . .... ____, .
FlG.1
-6-
'
I
/
tli1 _ 1Nl~l:!_M O IL LEVEL
MAXIMUM OIL LEVEL
E
F
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When starting a n
ew
machine, beginning filling the reservo
ir·
s of when beginning lo operate a machine
t
ha
t hasbeen -
id
le for some limo . it rw1y be necessary lo prime
tt
1e
pump.
To
dothis ,remove thetwo plug
screws(C).Apply oil to these
ho
les and operate machine until bubbling can be observed at the windows
.Replace screws(C).
CAUTION:
If
oil does not bubble when m
ac
hine
is
running , the circulating pump is inoperative.
Oil
may
be
drained from the machine at two pla
ces
,plug scre
w(
F)located in the bott
om
of the cylinder
and
pl
ug screw(G)at the back of the ma
in
frame be
lo
w the handwheel.
THRE
AD
IN
G
A convenient means forthreading the looper has been provided.Whenloopers are at the le
ft
end oftheir
travel,pressthe knob(H
,F
ig.1) and looperswill backout of position,leaving them easily accessible . Thread
the machine as illustrated in (Fig.1).Afterthreading ,push loopers back into posi
ti
on.
ADJUSTING
INSTRUCTIONS
NOTE: Instructi
on
s stating direction of location ,such a srig
ht
,
le
ft, front
or
rear of m
ac
hine ,
ar
e given
relative
to
ope
rat
or'
s position
al
the machine .The handwheel rotates counterclockwise ,in operating
direction ; when viewed from the right end
of
mac
hine.
TORQUE
REO
U
IAE
ME
N
TS
Torque specifications gives in this
c..i
lalog are measured In
in
ch-pounds or Newton-meters.All s
tr
aps and
eccentrics must be tightened to 19-21in .lbs.(2.1-2.3Nm)Unl
es
s otherwise noted.All nuts,bolts,screws,
etc.without torque specifications musl be secured as lightly as possible.unless otherwise noted.Special
torque specifications f
or
conn
ec
ting rocls.links.screws elc
..
are sh
ow
non the parts illustrations.
-7
-
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SYNCHRONIZING NEEDLE AND LOOPER MOT I ONS
NOTE : Needle and looper mechanisms are carefully synchroni ze d with precision gauges before leavi_ ~g
the factory to insure the pest possible sewing condition s.
0
FIG :2
FIG.3
Should it beco me necessary to disassemble- the main shaftor
replacecomponents of the needle orlooper- cJrive n:iecha _ nisros .,
re -synchronization of the rnachine vv!II be f~<il1.Jired . to
1
. faqil)tE1l$. ,
propersewing adjustments:
This is ·accprpplish. ed py rn~«ln~ :Of ·
an adjustable split coupling located ben_ ~~th, . th~ r~~~ - \9P ps,y~r,
connecting the crankshaft to the main sh~ft;Whiph · in t~rrf drives
the looper mechanism.
To synchronize the machine.remove .the-oeeqles\ pres:s~r ;f()pth ·:=
- • -, . - : • . • ,'1 ' '.'. ·-·::~:: . :-: : . ,: . .. .•
throat plate.feed dogs and upper feed rolle r: . mechcini _ sTT) :. '19~te. ·
. . ·: :·:,·,•1·;,·:., ·.:-
handwheel in the operating dir.ection until the'needle· b'ar "is:at
;,, . ' , .. ·:. . ::
th e bottom of its stroke anq Just b. egins its upward trave. .I· '- 4<>6.~e:~
screw(A,Fig.2) and remove the looperforthe leftharWMedle -
from the looper holder.Insert a straight_steel
rod (8)5/~2 '; (3.
9mm) or 11/64"(4.3mm) diameter by 2 !.- 1/2~(63fomri1}'tong \ nto .
looperholder and retighten screw(A).Rota\~th~ p~n · ~~n. . ee \":J. Mn ·--
the rod (B) is at the extreme left and ·reinstalf'the tlit~~t , pfot _ Ei.
Loosen screw(F)in looper holder an d move the.h9lder)~ft9r
right
until the right sideof the rod is appro,si1T1ately - 5/32''.( 4:0mrn)
from the left edge of the throat plate.tighten screw(F) .- Tur.n ·th~:
handwheel in the operating direction ,w ith needle. bar r,lsl ng ~nt ll . . o;; ')
rod(B)comes in contact with the edge of the thro~t plate:Atthis
point,clamp timing gauge
No ,TT147(C)around the.needle ': bar ·
(D),flush aga inst the underside of the machine casting(E). ;Rotate
handwl
1eel in the opposite direction until_ needle bar-orthe rod
contacts the edge of the throat plate.Maximum allowable
clearance between
gauge and casting or rod and throat plate:
is .005"(0.1
mm) . .
-8-
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'
1·
Ifmachine is not synchronized the following applies:
Both ends
of the adjustable split coupling are secured to the crankshaft and main shaftby spot screw.s
and·setscrews.On lhemain sha ft end ofthe coupling(A.Fig.3)three screws(B) thread horizontallythrough
the coupling .The holes
in the main shaft end of Lil e coupling are largerthan the diameter of the screws,
perrriitti11g _, ~~veral,degre~s of rotation in eith er direction to properly synchronize the n~edle and.loop~r;
L~p~~J'.) ; tf i'.~ three h _o rizont~I clamp screws(B,Fig.3).Witli rod (B.Fig.2)atits farthest position to tne_.left .:
$_r:J~~-"the. :, YP. . 8,!,fITlost hori~_ontal clamp scr ew enough to hold coupling (A.Fig.3)ln posjti~ n,lfthe han~wheel
is!
ftirh.'~g_":_i/j ) r,e,v~r s~: of o~~rating direction and gauge(C.Fig.2)on needle b'ar (D)cb~tact~-the. michin~
9):1stirjg(Ej6, · ~t,ore :rQ~(B}contacts the edge of th e throat plate loosen horizontal clarpp :screw(~.Fig.3)
wl1ich
'. wa· s\;nug _ ,, whlle·holding the coupling in place with an Allen wr ench in sef sctew(C).Rotate:tht)
. ' - -. ·.. . . '1 .-: --: .
handwhE1~l-stightly .in reverse ofoperating direction,snug the uppermosthorizorital. ~1 - ~QJp ;~cr.ew(B),rechec~
• ' • . .. Jt.·,-1-<:."t; ,;.· -.-· _:-·-; . ·.;. ' -
syr,c~ronizalion.lfthe handwheel is turned in reverse of operating directio,(l , ,j' Od fh:~ ~ ~o d :' qonta¢ts,the
. :· . . ·,::·:: ' (!:,.;,-'::~!:.~,)1:_ .• :: · :· . ··.:· : · .. . .· :
~dge_pft~e :'. throat plate·before the clamp gauge contacts the maeh ine casting .~~jy :~ l ~ ~f . b,~fo f~;~~c- ~pf
:tur, nthe , hatl~."'1he el slightly in the operating direction.U se shim sto_ ckto i hsliry. } 9b ,: fup'f~ ii ~~:,t i oos _ 7t o l, '
- 1!'l1!TJ)Elxist~ :~etween gauge and casting or between rod and throat plate ,in ·.,, b. p tj :(" tpe+o,peratl. 1g
9
nd ,
J'_t¼'{~r~¢ ;- qirectiQ l)S -' Of the ll andwheel. When this setting has been made·,t1ghte _r,ij~~h~ ree' ho tiz on1ai:
· ¢i~mp_ :sp r_~wi( B :F ig ;3)se9urely,and recheck both clearance points with .005''0.·1mt'n)sn\m gaugeto assur~
nojijlpp~~~;occu_tred
wl11le tightening the screws.
TIGHTENING NEED LE H EAD
Wh!:iil r~pli;i~emeot oMhe needle bar, anc J or needle head is necessary,torque the needlehead to ne_edle
~~ · df1 €f i~:lbs.(1!6~1.8N.m)oruse to rq ue rod No.21227AR thathasbeen supplied with.the machine ;for
tn'e ipur~9se\of eliminating th e possibility of dtstorting the needle bar due to overlightening.lnsert the
. tofq6¢ : i~_a ·· 1n ' th~ h61e at the upper end of the needle-bar, while holding the needle bar bead with a
iuii~b\e t ~;!,t~m '. tfie n~edle bar with the torque rod onto the needle bar head. When the rod st,frts to .
ti itj~,the·n~edle:barhead has been thr ea ded into the needle bar properly.
- 9-
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ALIGNING NEEDLES IN THROAT PLATE SLOTS
FIG.4 .·
Torque To
18 fl. lbs.
FIG;5
, ."(Bl
---· ' . .
;
A-- ~llf"..:lll.':!lii&II ~""
~A .
""-::. , =,...,..._, .~
;
A2'15-i-l
FIG.6
Insertanewsetofneedles , type and sizespecified, with screw
(B.Fig,4) slightly loosened.lower needle bar(A) and turn needle
head
as required until the needles are centered in the throat
plate needle hole slots .Tighten screw (B)torque to 19-21in.
lbs.(2.1-2.4Nm).
NOTE: If the needles can not
be aligned in the throat plate
slc)ts ,the lower cylinder mustbe movea as steted below.
CENTERING THE CYLINDER
Remove the top front cover and gasket from th$ main frame.
Loosen cylinder holding screw(A,Fig.5).Turn eccentric screw
(B)clockwise orcounterclockwise to move
the cylinder so the
needles are centered in the needle holes.Tighten screws(A)
torque to 18 ft.lbs.and
recheck settings.
NOTE:The cylinder may
not move freely when the eccentric is
turned because the joint sealant
compound has set.
SETT I NG THE LOOPER.
Insertanew set of needles,type and size ~pecified.Always adjust
the looper (A,Fig.6) for
the left needle first.Set the looper so
that the distance from the center oft)le needle(B)to the point of
the looper(A) is 9/64" {3,6mm) when the looperis at itsfarthest
position
tolhe left.Looper gauge (C) No.21225-9/64 can be
used advantageously In making this adjustment.Ifadjustment
-10-
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Descending
Needles
ooper
Blade •
Lowor
113
.
-
--~
FIG.7
is required, loosen screw(A,Fig.7) in looper holder.permitting
movement
in
either
direction
to
attain the
9/64
"(3.6mm)
dimension as sho
wn
in Fig .6.Retighten screw{A.Fig.7).Repeat
for
other needl
es
and loopers.
Rotate handwheel
in
op
erating direction to assure that the looper point passes to the rear
of
the needle
·totouch butnotdeflect.This adjustment can bemade by loosening screw(A.Fig.?)in looper holder.Looper
holder
can
be moved front
to
back
to attain looper to need
le
setting.Always check the 9/64''(3.6mm)
looper gauge setting aftersetting the looper
to
the back
of
the needle.and conversely.always check the
setting·
of
the looper
to
the back
of
the needle after setting the 9/64"(3.6mm)loopergauge.
The amount
of
loope(avoidhasbeen set
at
the factory to .110"(2.8mm).lf
it
becomes necessary to ad
ju
st
the amount
of
avoid it is recomended
as
a starting point ,to have the points
of
the decending needles
contact
the
back
of
the lower
1/3
of the back
of
the looper
bl
ade.
S
ET
T
ING
TH
E
LOOP
ER
(CO
NT
)
FIG.8
If more
or
less looper avoid motion
is
required.remove cylinder
side cover(A,fig.8)Iocated at
the
lower
front
left
side.U
se
a
screwdriver
to
loosen looper avoid linkballjoint(B).Moving ball
jo
intdownin the leverslotincreases the amount
of
looperavoid
motion.moving
it
up
ac
ts the reverse.Retighten
ball
joi
nt
(B)
securely.
NOTE:Wheneverlooper avoid is changed looperclearance to nee
dle
must also be reset.
SET
TING
HELGHT
OF
NE
E
DL
E
BAR
The height
of
the needle bar
is
correctwhen the top
of
the needle eye
is
1/16"(1.6mm)bel
ow
the underside
of
the looper,with the looperpoint even with
lh
e right side
of
the needle .To make adjustmentloosen
-I
I-
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TO R QUE :
19-21 in. lbs.
(2. 1- 2,4Nm)
11111" (1 .6 mm)
screw(A.Fig.9)and mov e needle bar (B)as required to attain
dimension.
NOTE: Care must be taken notto disturb the alignment of the
need
le s When moving the needle bareitherup or down.
SETTING THE FEED DOGS FOR PLAIN FEED
F IG . 10
FIG . 11
Assemble the main feed dog and throat pl~te. Main feed dog
.
(A.F :i g.11)at it s highest position,should be sett9 project a~~ve·
the throat plat e. the depth of it s teeth.The' feed dog rnpunting
soreW(B)and front supportscrew(C)should be set
to maintain
this setting.
The feed sl1ould be set so th ere is equal clearance between
the front of the feed dog and the front of the feed slot In the
throatplatewhen thefeed dog is atits
mo .stforward travel, The
same amount
of clearance should be between the back of the
feed dcig and the back of the feed slot in the throat plate When
the feed dog is at its most rearward travel.To attain this setting
loosen screws (Aand B,Fig.10)andremove plugscrew(D).Using
a
screw driver turn eccentric pin (C) clockwise or
counterclockwiseto obtain propersetting.Tightenscrews(Aand
B),reinstall plug screw(D).
SETT I NG THE FEED DOGS FOR DIFFERENT I AL FEED
Before assembling the main and differential feed dogs.set the feed ba ·r eccentric pin (A,Fig.10A)located
in the left side nearcenter of cylinder.so that the slot in the head is in a horizontal position.This assures
- 1 2-
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B
-
---
-~
<>
. E
D
t,l\
·········
-:- -
- ci'
__
__
----
A
rnrror
on
ll~I
Fee<J
FI
G
.10A
B
A~
--
·-
~
-._:c:..,
'
@·
m~~
.
~
FIG
.
11A
a neutral position of eccentricity for the purpose tilting
of
the
main and diHerential fe
ed
bars simultaneous
ly
.
The
feed
bar
pin is retained in position by set screw(B).Asscmble differential
feed dog (A,Fig
.1
1A),main feed dog(B) and throat plate ,Both
the main and differential feed dogs can be individually adjusted
to height.Main feed dog (B)al itshighest positio
n.
should a set
to p
roject
above the
thro
at plate.the d
ep
th
of
its
t
ee
th.If
adjustment is necessary loosen
sc
rew(D)and
mov
e feed dog
(B)up
or
do
wn
to
atta
in
correct setting.Feed
dog
support(C)
should support front
of
feed dog.
SETTING
THE
FEED
D
OGS
FOR
DIFF
E
RENTIAL
FEED(CONT)
If
adjustment is.necessaryloosen screw(E,Fig,
11
A)in feed dog support(C) a
nd
moveasrequired.Retighten
screw(E).
Th
e differen
ti
al
fe
ed d
og
(
A)may
then be leveledwithmain feeddog (B).lfadjustmentisnecessary
loosen screw(F)and move feed dog up
or
down as required.Retighten screw(F).
NOTE:Should the main feed dog requirerepositioning due to contactwith the throatplate in itsforward
or
rearwardtravel ,loosen set screw(C,Fig.10A)in main
fe
ed bardriving link(D),rotate main feed bareccentric
driving stud(E)as required.Driving stud(E)hasa thin hexagon head withcutouts on two
of
the flatsallowing
movement by tapping with a sharp
po
inted tool.
wh
en
wr
en
ch2
1388AZ
is
not available.Whenever the
main feed
bar
eccentric driving stud position has be
en
changed.recheck rear needle quard setting,
adjustment
may
be required.Relighten set screw(C). Positi
on
main feed dog support
(~
1
Fig.11A)flush
against bottom
of
main feed d
og
(B },tighten support screw{E)secure
ty.
-1
3-
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CHANGING STITCH LENGTH
FIG.12
When change in stitch length is required.rem ove large plug
screw(A,Fig.12).Loosenfeed rockerdrivinglinkscrew(B)in lever
(C).Moving
the feed rocker driving link up in the lever slot
lengthens the stitch.moving it down ,shortens the stitch,
Retighten linkscrew(B)securely and replace plug screw(A).
NOTE: If plug screw(A) is replaced with a new plug screw ,itshould be seale(i with a silicone seal.
Any stitchlength change.requires resetting the needle guard.
CAUTION:Whenmaking stitch length adjustment
do riot exceed maximum recommended stitch length
due to poss i ble partdamage.
SETTING READ NEEDLE GUARD
B
FIG.13
Set the rear needle guard(A.Fig.1'3)horizontally S? th~t itparely
cohtacts needles(B)when at its extrem~ forward position.If
adjustmentis necessary loosen screw(E)and,mo~e guard front
toback as required.Itshould be setvertically i:i~ tow as.possible,
yet have its guarding surface in contactwith the .neeQles until
the points of the loopers(C),moving to the rig~t.c:1re even with
the rightside of the needles. If adjustment is n~cessaryloosen
screw(F)and moveguard and holder
up ori:town as required.
CAUTION:lf stitch length is changed.needle guard must be reset
NOTE:Wheninstallingthe needle it should be parallelwiththeeyein line offeed.lf adjt,1stment isnecessary,
loosenscrew(N,Fig.15)in needle head and rotate needle
to attain adjustment(O,Fig.13).
-14-
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G
PRESSER
FOOT
AND
P
RESS
ER
BAA
ADJUSTMENT
FIG.14
K
l~ii
~•/"!
+~
..
,
I
TP··
I
1I32"(Brrim)
~Al"--~-,
-~
;::::=~
.
.J...
1/16"(1.6mm)
(jj
FIG
.
15
Adjusting or Replacing Presser
Foot:
Remove presser bar leafspring(B,Fig.14)and nut(B):Loosen
screw(A,Fig.15)on presser bar guide(B ).Loosen
sc
rews(C)in
uppercollar
and
screws(D)
in
needle
leverthread pull-offlever
..
Slide Presser barupward
high
enough to slip
on
presser
fo
ot
yoke(
E)wilh
foot
attached
and
tigh
ten
screw(F)on
flat ofpresser
ba
r.Position fool
so
that
the
needle holes
in
the foot line up
with
th
e holes
in
th
e throatplat
e.Tighten
screw(A).
Presserfoot guide plates(G,,Fig.15)should
be
setso
tha
t entire
presser
foot
and bar
assembly
has
free
movement
up
and
down
with noleft to right movement .
With foot properly aligned
on
throat plate and presser bar
guide(B,Fig.15)securely fastened to presser bar.adjust both
gu
id
e plates(G)to obtain
above
setting.Tighten four screws(H).
Reinsta
ll
presser barspring(B,
Fig
.
14)
and
knob(A)
,with presser
foot resting
on
throat plate.
Setupperstop collar(K)to contact casting.so
th
e bottom ofthe ne
ed
le
head
and
the
top
of
the
presser
fo
ot
do
not touch.at
the
bottom ofthe needle stroke
when
lifting foot.Tighten screw(C).
The presser foot should be adjusted to
be
1/8"(3.17mm)above the throat
pl
ate
before
th
e feed roller
mechanism begins to rise
..
Loosen screw(A,Fig,15) in presser bar lifter
and
guide (B),raise or lower
guide
as
required to attain
the
specified point at
wh
i
ch
the
feed
roller
begins
to
rise
.Retighlen
screw(A)
and
maintain
needle
settings.
-15-
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