Union Special LF600 User Manual
Adjusting instructions and
illustrated parts list
Two- and Three-needle,
plain feed flatbed machines.
LFGOO
"Standard Class"
FOREWORD
This technical manual has been prepared to guide you in the maintenance
machine. Careful attention to the instructions for operating and adjusting these machines will enable you
to maintain the superior performance and reliability designed and built into every
machine.
The Adjusting Instruction portion
components related to forming the stitch and completing the functions
illustrate the adjustments using reference letters to point out specific items discussed.
Adjustments are presented in sequence so that a logical progression is accomplished.
performed out
Implementation
productivity by avoiding costly equipment breakdowns. Whenever
or
replace parts on your machine, be sure to insist on genuine UNION SPECIAL Repair Parts. These parts
are designed specifically for your machine and manufactured with utmost precision to assure long lasting
service.
This Catalog has been made on the basis
may incorporate a slight modification
of
sequence may have an adverse effect on the function
of
Preventive Maintenance Schedule can bring about significant improvements in operator
of
this manual explains in detail the proper setting
of
available information. Changes in design and/or improvements
of
configuration in illustrations
CATALOG
N0.143
N
of
your new UNION SPECIAL
UNION SPECIAL
for_
each
of
of
the machine. Figures are used to
Some adjustments
of
other related parts.
it
becomes necessary to make repairs
or
part numbers.
the
LF612KlOOHB
LF612KlOOHC
LF612KlOOHJ
LF612KlOOHR
LF612KlOOMP
LF612KlOOMX
Rights Reserved In All Countries
For
Styles
LF612Kl01MBE
LF612K112HJ
LF613K100HJ
LF613KlOOHR
LF613K101HR
LF613Kll2HR
First Edition
Copyright
Union Special Corporation
1990
By
Printed in U.S.A.
July, 1990
2
Each UNION SPECIAL machine is identified
into the
left rear base
Style plate affixed to the right front
of
machine
of
by
a Style number, which
machine. Serial number is stamped into bed casting at the
on
this machine Class, is stamped
NOTE: Instructions stating direction
relative to the operator's position at the machine, unless otherwise noted.
counterclockwise in operating direction as viewed from the right
High speed, maximum performance, double locked stitch, plain feed flatbed machine. Totally enclosed
feed and looper drive mechanism, fully automatic forced feed lubricating system with easily replaceable
oil filter, quick stitch change, independently driven rear needle guard and quick adjustable looper avoid.
LF612K100HB Two needle, HIGH capacity, for seaming trousers and similar garments made
heavy to heavy weight material. Right needle in front. Standard recommended needle
Type
128
GBS, Size 100/040. Available in 7 S.P.I.
The seam produced has two rows of stitching with the strength
is
moved forward
depending on operation.
LF612K100HC Same
LF612K100HJ Two needle, HIGH capacity, for attaching risers to dungarees, piecing sleeves on denim
as
Style LF612KlOOHB except available in 10 S.P.I.
jackets and attaching overall bibs. Includes double lap seam folder 3/32 inch (2.4mm)
capacity. Left needle in front. Standard recommended needle Type 128
125/049.
mended speed
Stitch range 7-14 S.P.I. Standard gauge Nos.
or
location, such as right, left, front
STYLES
at.
a rate
6500 R.P.M., depending on operation.
OF
MACHINES
ONlY.
of
7 S.P.I. Maximum recommended speed 6500 R.P.M.,
or
rear
of
machine, are given
The
handwheel rotates
end
of
machine.
of
medium
Standard gauge No.1 ONI.Y.
of
14 S.P.I., yet the fabric
ONlY.
GAS, Size
16
and
18.
Maximum recom-
LF612K100HR Same
LF612K100MP
LF612K1
LF612K101 MBE Two needle, MEDIUM capacity, for hemming bloomers. Equipped with Close-Coupled
LF612K112HJ
LF613K100HJ Three needle, HIGH capacity, for seaming wind breakers, mackinaws, lumber jacks and
OOMX
Two needle, MEDIUM capacity, for piecing sleeves, joining shoulders and setting sleeves
as
Style LF612K100HJ except Standard gauge No.
S.P.I.
on ordinary quality shirts made with light to medium weight materials. Includes double
lap seam folder 1/16 inch (1.6mm) capacity. Standard recommended needle Type 192
GLS,
Size 75/029. Stitch range 9-20 S.P.I. Standard gauge Nos.
recommended speed
Two needle, MEDIUM capacity for quilting collar bands of shirts and similar garments.
Standard recommended needle Type 192
Standard gauge No. 24 ONLY. Maximum recommended speed 6500 R.P.M., depending
on operation.
Roller Puller. Standard recommended needle Type 192
6-12
S.P.I. Standard gauge No.
depending on operation.
Same as Style LF612K100HJ except-equipped with power"AlR-KLIPP" ® Chain Cutter.
Standard recommended needle Type 128
for similar operations on medium heavy to heavy weight material. Equipped with tractor
6500 R.P.M., depending on operation.
GLS, Size 90/036. Stitch range 14-20 S.P.I.
16
ONLY. Maximum recommended speed 6500 R.P.M.,
GAS, 125/049.
18
ONLY. Stitch range 7-10
12
and 16. Maximum
GLS, Size 80/032. Stitch range
3
type presser foot. Includes double lap seam folder 3/32 inch (2.4mm) capacity. Standard
recommended needle Type
gauge Nos. 8 and 9. Maximum recommended speed
128
GAS, Size 125/049. Stitch range 7-10 S.P.I. Standard
6500 R.P.M., depending on operation.
LF613K100HR Three needle, HIGH capacity, for seaming sanforized denim and similar operations on
medium to heavy weight materials. Includes double lap seam folder 1/8 inch (3.2mm)
capacity. Standard recommended needle Type
S.P.I. Standard gauge Nos. 8 and
depending on operation.
9.
128
GAS, Size 125/049. Stitch range 7-14
Maximum recommended speed 6500 R.P.M.,
LF613K101HR Three needle, HIGH capacity, for seaming sanforized denim and similar operations.
Equipped
(3.2mm) capacity. Standard recommended needle Type
range
R.P.M., depending on operation.
with Close-Coupled Roller Puller. Includes double lap seam folder. 1/8 inch
128
GAS, Size 125/049. Stitch
7-10 S.P.I. Standard gauge Nos. 8 and
9.
Maximum recommended speed 6500
LF613K112HR SameasStyleLF613K100HRexcept-equippedwithpower"AIR-KLIPP®" ChainCutter.
®"AIR-KLIPP" is a registered trademark
of
Union Special Corporation.
4
SAFETY RULES
A
CAUTION!
THIS SYMBOL INDICATES YOUR PERSONAL SAFETY
PREVENT PERSONAL INJURY:
TO
- All power sources to the machine
replacing parts.
- Wear safety glasses.
- All shields and guards
-
DO
NOT tamper with safety shields, guards, etc., while machine is in operation.
IMPORT ANT: Machine must be in a leveled position.
Oil has been drained from main reservoir before shipment. Use a straight mineral oil with a Say bolt viscosity
of90
to 125 seconds at 100 ° Fahrenheit. This is equivalent to UNION SPECIAL Specification No. 175.
Remove oil filler cap (A, Fig.
MUST be in position before operating machine.
1)
and fill to the TOP line
MUST be TURNED OFF before threading, oiling, adjusting, or
LUBRICATION
of
oil level gauge (B). Replace oil filler cap.
IS
INVOLVED
CAUTION!
To maintain maximum recommended
Preventive Maintenance Schedule. Under no circumstances, should oil remain in the machine for more
than one year. Oil drain plug is located in bottom
At this time, evaluate the contaminated condition
more or less frequently. To replace
cartridge. REMOVE (brass) BY-PASS VALVE
FILTER. Reassemble in reverse manner.
On
new machines, machines that have been out
OR
machines that have been drained
300 R.P.M. for approximately five minutes while paying strict attention to the oil flow
indicator which should rise in the oil filler cap (A) and remain steady while machine is
running. This must be noted to ensure that oil flow indicator is functioning and oil is
circulating. Check oil level while machine is running which
the red lines
of
oil level gauge.
filter, remove four screws (C, Fig.
speed and serviceability
of
oil and refilled .... RUN MACHINE SLOWLY at
of
oil pan. ALWAYS change oil filter when oil is changed.
of
the oil to determine
FROMTOPOFOLDFILTERAND
5
of
service for an extended period
MUST be maintained between
of
these machines, refer to General-
if
the oil filter should be changed
1)
and cover (D); lift out filter
INSTALL IN NEW
of
time
LUBRICATION DIAGRAM
•
P100B
PRESSURE
OIL
•
~TfM!~!f@
SIPHON
FILTER
Fig.1
6
RETURN
BY-PASS
NEEDLES
Each needle has both a type and size number. Type number denotes the kind
fmish, and other details. Size number, stamped on the needle shank in metric, denotes largest diameter
blade, measured midway between shank and eye. Collectively, type and size number represent the complete
symbol, which is given on the label
TION.
The type numbers
in the machine style description. Other needles are available, but the ones indicated are those recommended
to produce the most satisfactory results. The type numbers
descriptions, and the sizes available are listed below:
NEEDLE TYPE
128 GAS
128 GBS
of
the needles recommended for each Style
Round shank, round point, short, double
groove, struck groove, ball eye, spotted,
chromium plated.
Round shank, round point, short, double
groove, struck groove, ball eye, spotted, ball
point, chromium plated.
of
all needles packaged and sold by UNION SPECIAL CORPORA-
of
machine covered by this catitlog are given
of
the recommended needles together with their
DESCRIPTION
of
shank, point, length, groove,
SIZES AVAILABLE
80/032, 90/036,
100/040, 110/044,
125/049, 140/054,
150/060, 170/067.
80/032, 90/036,
100/040, 10/044,
125/049, 140/054,
150/060.
of
192GLS
To have needle orders promptly and accurately filled, an empty package, a sample needle,
Size number should be forwarded.
Type 128 GBS, Size
Round shank, round point, extra short, double
groove, struck groove, ball eye, spotted
(plated) thin ball point, chromium.
Use description on label. A complete order would read
90/036".
55/022, 65/025,
70/027, 75/029,
80/032, 90/036.
or
the Type and
"1
000 needles,
NOTE: On earlier styles, machines equipped with a DURACOAT ALUMINUM needle bar, TORQUE
needle bar connection screw, 16 to
On later styles, machines equipped with a STEEL needle bar, TORQUE needle bar connection
screw, 22 to 25 in-lbs (25.3 to 28.8 ern/kg).
TIIREAD MACHINE AS ILLUSTRATED.
18
in-lbs (18.4 to 20.7 ern/kg).
7
PIVOT
TO
LEFT FOR
GUARD
•
For
ease
looper
CAUTION!
extreme
release
of
threading,
holder
Looper
left
lever
to
the
holder
and
up
right.
MUST
LOCKED
before
·be
by
sewing.
returned
pulling
to
TWO
THREAD
A193A
THREADING DIAGRAM
8
TIMING FEED TO NEEDLE
Adjustment would be required
while the needles are in the work.
This can be accomplished by removing top cover, head
cover, left cloth plate, and top feed chamber cover. Rotate
handwheel in operating direction to position needle bar at
bottom
in the feed drive eccentric (B) must be on the flat
feed drive shaft and in a vertical position. Adjustment can
be made by loosening two screws (A, Fig. 3) in upper
mainshaft sprocket (B). Hold the handwheel
needle bar at bottom
to position screw (A, Fig. 2) so it is vertical. Torque screws
(A, Fig. 3) to 55 in-lbs. (63 em/kg).
NOTE:,
of
stroke. At this time, the first screw (A, Fig. 2)
of
stroke and rotate pulley as required
Whenever "TIMING FEED TO NEEDLE" is
corrected, always check
LOOPER
SYNCHRONIZING LOOPER
AND NEEDLE MOTIONS."
AND
NEEDLE
if
the machine is feeding
"SYNCHRONIZING
MOTIONS
of
the
fmnly with
Fig.2
NOTE:
Looper drive belt, (A, Fig. 4) has proper tension if, when
turning hand wheel in operating direction
in the center
noticeable (right to left) play in the looper mechanism.
There should be approximately 1/8 inch (3.2mm) deflection in looper drive belt when pressing
midway between sprockets
made by loosening two screws (A, Fig. 5) and tum looper
module (D, Fig. 4) counterclockwise to tighten belt or
clockwise
screws (A, Fig.
To synchronize machine, remove needle bar eyelet guard,
needle thread take-up cam wire, needles, presser foot,
throat plate, loopers, and feed dog. Tum handwheel to
position needle bar at
holder at
End cover has been removed for clarity in Figure 4, but MUST BE IN POSITION WHILE
MAKING
MENTS.
of
to
loosen,
5).
EX1REME right end
THE
its (right to left) travel...
as
FOLLOWING
,
fmnly with thumb,
(B
and C). Adjustment can be
viewed in Figure
BOTTOM
of
of
stroke and looper
travel.
to
ADJUST-
position looper
..
there is no
4.
Retighten
Fig.3
9
Fig.4
SYNCHRONIZING LOOPER
AND
NEEDLE MOTIONS (Continued)
Using gauge No. 21227 AC, mount gauge plate with thro.at
plate attaching screws. Insen pin (included with gauge)
into looper holder. Mount indicator block to machine
head
Fig.S
with one
guard.
and tighten screw against shank.
ence).
NOTE:
Rotate hand wheel in
in looper holder contacts gauge plate. Loosen screw (A,
Fig.
bar
"0"
IMPORTANT: Refer to NOTE, page 7 for proper
of
the screws removed from needle bar eyelet
lnsen
6)
(C)
and tighten screw (A) VERY LIGH1L
shank
of
indicator gauge into indicator block
(See Sketch A for refer-
For
Style
mounting plate.
in needle bar connection (B) and position needle
as
required to set the pointer
LF612Kl01MBE
OPERATING direction until the pin
TORQUE
of
screw.
use
21227 T
of
indicator gauge at
Y.
Sketch A
Fig.6
Rotate handwheel in REVERSE direction until pin in
looper holder again makes contact with gauge plate and
of
note the reading on the gauge. A variation
tion on the scale is permissible.
"0",
loosen screws (E, Fig. 4) and tum rear looper drive
sprocket (B) towards the operator (clockwise as viewed
If
in Figure 4).
away from operator (counterclockwise as viewed in Figure 4). Temporarily snug screws.
Rotate handwheel in
looper holder contacts gauge plate and note the reading
on scale.
and turn sprocket (B) away from operator (counterclockwise
turn sprocket towards the operator (clockwise as viewed
in Figure 4). Temporarily snug screws.
If
as
viewed in Figure 4).
the reading is below
OPERATING direction until pin in
the reading is above
If
the reading is above
"0",
"0",
loosen screws (E)
If
the reading is below
(1) gradua-
tum sprocket
"0",
10
SYNCHRONIZING LOOPER
AND
NEEDLE
MOTIONS (Continued)
LOOPER IN
FRONT
OF
NEEDLE
Continue to check and adjust in both OPERATING and
REVERSE directions until pointer
comes within (1) graduation on the scale when turning the
hand wheel in either direction.
Before tightening screws
inch (.051mm) clearance between sprocket (B) and needle
guard drive connecting
If
a synchronizing gauge is not available .... turn the hand-
wheel in operating direction to position right looper point
even with the left side
from the eye
Turn handwheel in reverse direction to position looper
point even with the left side
the distance from the eye
blade.
turned in operatirng direction, (as viewed in Sketch B)
loosen screws
et (B) away from operator (counterclockwise
Figure 4 ).
turned in reverse direction, (as viewed in Sketch
sprocket towards the operator (clockwise as viewed in
Figure 4). Temporarily snug screws.
Continue to check and adjust in both OPERATING and
REVERSE directions until the distance from the eye
RIGHT needle to the bottom
either direction, (as viewed in Sketch D).
of
needle to the bottom
If
the distance was greater when handwheel was
(E, Fig. 4) and turn rear looper drive sprock-
If
the distance was greater when hand wheel was
(E) securely, be sure to have .002
rod (F).
of
right needle and check the distance
of
of
needle to the bottom
of
of
indicator gauge
of
looper blade.
RIGHT needle and check
of
looper
as
viewed in
C) tum
of
the
looper blade is the same in
t[§
~:EATEST
r
A107
LOOPER
BEHIND
NEEDLE
A108
_j
OPERATING
DIRECTION
SketchB
GREATEST
REVERSE
DIRECTION
SketchC
Before tightening screws (E, fig. 4) securely, be sure to
have
.002 inch (.051mm) clearance between sprocket (B)
and needle guard drive connecting rod (F).
A
109
11
For Proper SYNCHRONIZATION
Looper & Needle
Dimensions
-------
Looper
BEHIND
Needle
in
OPERATING
Direction
SketchD
will
in
REVERSE
Direction
of
NEEDLE BAR ALIGNMENT
Insert a new set
TOP
of
1 7/8 inches (47.6mm) from the
bushing when needle bar connection (B) is positioned at
TOP
of
be made by loosening screw (C), reposition needle bar up
or down as required and tighten screw
LY.
IMPORTANT: Refer to NOTE,
Rotate handwheel to ensure that needles center in the
needle holes
ment can be made by loosening screw (C, Fig. 7) slightly,
allowing needle bar to be rotated
careful to maintain the temporary height setting and
tighten screw (C)
directional adjustment
complished
of
throat plate as shown in Figure
as
required, while being
AS
SPECIFIED. An additional 4-way
of
the throat plate can be ac-
as
follows:
8.
Adjust-
of
needles. As a temporary setting, the
needle bar (A, Fig. 7) should be approximately
TOP
of
upper needle bar
STROKE as shown in Figure 7. Adjustment can
(C) VERY LIGHT-
page
7 for proper
TORQUE
of
screw.
IMPORTANT: Adjustmentofthroatplatemustbecoor-
dinated between needles and feed dog; refer to
DOG SETTINGS". Loosen two screws (A, Fig. 8)
throat plate support (B). Loosen two screws (C) which
secure locating ferrules, allowing the throat plate support
to be repositioned slightly. Tighten screws (C) first, then
screws (A).
Fig.9
CAUTION!
If
not previously done, insert a new set
and size
end
to point
see chart. Adjustment can be made by pulling release lever
(B) down and loosening screw (A, Fig.
(B). Apply pressure against the upper portion
specified. With looper holder at EXTREME right
of
travel, distance from centerline
of
DO
NOT wedge
tool, as damage to needle bar may result.
LOOPER SETTINGS
RIGHT looper should be dimension (A, Fig. 9);
or
pry with any type
of
needles; type
of
RIGHT needle
10) in stop collar
of
of
looper
Fig.8
"FEED
in
Fig.lO
12
LOOPER SETTINGS (Continued)
holder (C) to the
counterclockwise to decrease. Applicable looper gauge can be used advantageously in making this
adjustment Continue to apply pressure against upper portion
collar (B) to its EXTREME CLOCKWISE position and tighten screw (A) securely. Push up release lever
(E)
to
lock looper holder in position. Adjust screw (C, Fig. 9) which incorporates a spring plunger, against
the recess in cam
Pull release lever down and be able to push looper holder to the right, with a snapping motion (making
loopers easily accessible for threading).
pressure against upper portion
in operating position.
In locked position, the release lever should be approximately in line with middle looper as viewed from the
right side
lever as required and retighten screw.
Loopers must also be set so, as they travel to the left behind the needles,
MAXIMUM clearance
loosening screw (A, Fig.
its shaft,
collar (B) to its EXTREME
up in locking position. RECHECK looper gauge.
of
as
required. Apply pressure against upper portion
LEFf
of
looper holder. Adjustment can be made by loosening screw (D, Fig. 9), reposition release
while turning screw (D) in looper holder clockwise to increase looper gauge
of
looper to the
stop collar as required to attain the following conditions:
Push looper holder
of
looper holder to the
of
.002 inch (.051mm). Adjustment can be made by pulling release lever down,
10) in stop collar (B) allowing looper holder to be moved forward
CLOCKWISE position and tighten screw (A) securely and push release lever
LEFf
to
the left, with a snapping motion. Apply
and push release lever up to lock looper holder
of
looper holder to the
LEFf
NOT to touch, but with a
while turning stop
or
LEFf
while turning stop
or
rearward on
MACHINE
LF612K100HB-1
LF612KlOOHC-1
LF612K100HJ-16
LF612K100HJ-18
LF612K112HJ-16
LF612K112HJ-18
LF612K100HR-18
LF612K100MP-12
LF612K100MP-16
LF612K100MX-24
LF612K101MBE-16
LF613K100HJ-8
LF613K100HJ-9
LF613K100HR-8
LF613K100HR-9
LF613K101HR-8
LF613K101HR-9
LF613K112HR-8
LF613Kll2HR-9
STYLE
DIMENSION A FIG. 9
5/32 inch
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
1/8 inch (3.2mm)
1/8 inch (3.2mm)
1/8 inch (3.2mm)
1/8 inch (3.2mm)
5/32 inch
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
5/32 inch (4.0mm)
(4.0mm)
(4.0mm)
LOOPER GAUGE NO.
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-1/8
21225-1/8
21225-1/8
21225-1/8
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
21225-5/32
13
NEEDLE BAR HEIGHT
Fig.ll
Fig.12
Turn handwheel in operating direction until POINT
RIGHT looper (A, Fig. 11) is even with the LEFT side
RIGHT needle (B). TOP
inch (.4mm) below the undersurface
shown in Figure
11.
ing screw (A, Fig. 12) and move needle bar
as
required. TORQUE screw (A).
IMPORTANT: Refer to NOTE, page 7 for proper
TORQUE
of
needle eye should be
of
looper blade, as
Adjustment can be made by loosen-
(B) up or down
of
screw. Care must be
taken not to disturb ALIGNMENT
needle bar while making this adjustment.
NOTE: DO NOT wedge with any type
of
tool,
damage to needle bar may result.
LOOPER AVOID
Machine is equipped with a quick adjustable looper avoid
mechanism to accommodate extreme differences in
needle sizes.
As
the looper travles from left to right with
needle bar descending, the needle points should contact
ONLY the lower THIRD
of
the back
of
looper blades.
looper avoid requires re-setting, loosen two screws (A,
Fig.
13) and turn eccentric stud (B) towards the plus side
(counterclockwise) for
MORE looper avoid or towards the
minus side (clockwise) for LESS looper avoid. When
desired setting is acquired, tighten screws (A).
of
of
l/64
of
as
If
NOTE: Whenever looper avoid is changed, always
recheck
REAR NEEDLE GUARD TIMING
Rotate hand wheel in operating direction to position looper
points at the RIGHT hand side
needle guard (C, Fig.
of
FORWARD travel. Adjustment can be made by
loosening two screws (A, Fig. 14) and turn needle guard
Fig.13
eccentric
ists. Ensure
needle guard eccentric
while tightening screws (A) securely.
(B) slightly as required until this condition ex-
.002 inch (.05lmm) clearance between
14
"LOOPER SETTINGS".
AND ADJUSTMENT
of
needles. At this time the
13) should be at its EXTREME END
(B) and looper drive sprocket (C)
REAR NEEDLE GUARD TIMING
AND
ADJUSTMENT(Continued)
of
At extreme forward end
Fig. 13) must be set horizontally not to contact needles
with a MAXIMUM clearance
Guard should be set as low as possible, yet have its vertical
face approach approximately
points until point
with the right side
by loosening screw
quired and retighten screw.
If
additional front to rear adjustment is required to maintain
needle guard in a horizontal position, loosen screw
14) in pivot link which allows needle guard shaft to be
rotated. Be sure
against needle guard holder to the left and pivot link to the
right, when tightening screw (D).
of
loopers moving to the left, are even
of
(E), reposition needle guard
to
take up thrust, by exerting pressure
travel, rear needle guard (C,
(D)
of
.002 inch (.05lmm).
3/64 inch (1.2mm)
needles. Adjustment can be made
of
needle
as
(D, Fig.
re-
Fig.14
NOTE: Change in stitch length WILL NOT require
change in needle guard setting, but a change
needle SIZE, may.
FEED
Feed dog should be centered in throat plate with equal
clearance on both sides and ends. Feed dog should be level
with and parallel to the top
rise. At highest point
extend the depth
(1.2mm) above throat plate.
ments
in throat plate support (B). Loosen two screws
ing two locating ferrules which allow movement to align
throat plate support. Reposition slightly
sidering both needle hole slots and feed dog slots. Tighten
screws
can be made by turning stitch regulating knob (A, Fig. 16)
counterclockwise to obtain LONGEST stitch length.
Remove rear feed chamber cover which is secured with
four screws.
can' be made by loosening two screws (A, Fig. 15)
(C) first, then screws (A). Front to rear adjustment
of
DOG SETTINGS
of
throat plate
of
travel, feed dog teeth should
a full tooth,
or
approximately 3/64 inch
MINOR (right to left) adjust-
as
it begins to
(C) secur-
as
required, con-
of
Fig.15
15
Fig.16
FEED DOG SETTINGS (Continued)
Loosen Allen screw (A, Fig. 17) and turn eccentric (B)
while rotating handwheel in operating direction to obtain
equal clearance in throat plate, front and rear. Tighten
screw (A) securely.
Feed dog can be leveled or tilted by loosening screw (A,
18)
Fig.
slightly
operator. Check parallelism
plate in position. Before tightening screw (A, Fig. 18),
make sure to have approximately
clearance between feed rocker
and rotate feed rocker tilting shaft (A, Fig. 19)
as
required. Punch mark on shaft must be facing
of
feed dog by placing throat
.002 inch (.051mm)
(B) and spacer sleeve (C).
Fig.18
Fig.19
IMPORTANT: Recheck front to rear clearance
dog in throat plate slots whenever feed
rocker tilting shaft has been repositioned. Replace rear feed chamber
cover.
With feed travel set to desired stitch length, set feed dog
height as specified by loosening mounting screw
15)
to position
located in the feed dog holder, adjust as required to
support feed dog before tightening screw (D).
Stitch length is changed by turning stitch regulating knob
(A,
Fig.
counterclockwise to lengthen the stitch. Recheck front to
rear clearance under
stitch length
of
machine attached to stitch regulating knob shaft can be
set to prevent stitch length regulating knob
accidentally being turned beyond the desired stitch
from
length.
as
required. Feed dog supporting screw
CHANGING STITCH LENGTH
16)
clockwise
"FEED DOG SETTINGS" whenever
is
changed. Stop collar (B, Fig. 19) at rear
to
shorten
the
of
feed
(D, Fig.
is
stitch
(A,' Fig. 16)
or
16
PRESSER BAR AND PRESSER FOOT
With needle bar at bottom
minimum clearance
of
of
stroke and presser foot resting squarely
1/64 inch (.4mm) between the bottom
presser bar guide plate (B). At this time, there should be at
bottom
clearance between bottom
of
presser bar guide and top
of
of
lower presser bar bushing. There should also be 1/16 inch (1.6mm)
slot in lifter lever link (C) and bottom
lever is released. 1f adjustment is required, proceed as
follows:
Back
off
presser bar spring regulator to release tension
on
spring. Loosen two screws (E) in presser bar guide (D).
Loosen nut (F) and turn screw (A) down against guide
(B)
plate
between bottom
to obtain at least 5/64 inch (2.0mm) clearance
of
presser bar guide (D) and guide plate
(B). Align presser foot with needles and press down
FIRMLY while tightening two screws
(E) in presser bar
guide (D).
NOTE: This setting was necessary to prevent damage
to the scraper edge
of
presser bar bushing,
should presser foot be removed from machine.
on
throat plate, there should
of
screw (A, Fig. 20) and bottom
LEAST
1132
inch (.8mm) clearance between
of
presser bar guide
of
(D)
when foot lifter
be
a
slot in
off
Turn presser bar spring regulator down. Back
screw
(A) to obtain 1/64 inch (.4mm) dimension between bottom
of
screw and bottom
of
slot in presser bar guide plate (B),
lock nut (F).
(H)
Loosen screw (G) in lifter arm
and rotate arm slightly
as required to obtain the 1/16 inch (1.6mm) dimension
between link (C) and guide (D), retighten screw (G)
ensuring no left to right shake in lifter arm (H).
Adjust presser bar spring regulator so
it
exerts only
enough pressure on presser foot to feed the work uniformly.
Turning
it
clockwise
increases
the
pressure,
counterclockwise acts the reverse.
LOOPER THREAD TAKE-UP AND CAST-OFF
PLATE
Looper thread take-up (A, Fig. 21) must be centered front
to back in cast-off plate (B).
It
should also be positioned
so as the needle bar is descending, the looper threads are
"cast-off' the highest lobe
the point
of
the left needle is even with the bottom
of
looper thread take-up when
of
its
looper blade.
1/16"
(1.6mml
Fig.21
17
LOOPER THREAD TAKE-UP AND CAST-OFF PLATE (Continued)
If
adjustment is required, lift cast-off plate up. Loosen screw (A, Fig. 22) in positioning collar (B) and two
screws (C) in looper thread take-up. Advance or retard take-up as required. Tighten two screws (C) securely
in take-up making sure it is centered in
cast~off
must be aligned with two screws which secure the discs
plate. Positioning collar (B), which has a slot in its face,
of
take-up together while THRUSTING positioning
collar forward against take-up. Remove the play between screw heads in take-up and slot in positioning
collar by applying pressure on the collar
CLOCKWISE
while tightening screw (A) securely. Cast-off plate (B,
Fig. 21) should be positioned horizontally. Which can be
adjusted by repositioning latch (C).
(D) in the center
of
their mounting screws. More or less,
Set adjustable eyelets
looper thread can be supplied in the stitch by moving
adjustable eyelets to the right or left respectively.
If
retaining finger is rubbing take-up, loosen screw (E),
center the fmger (F) and retighten screw.
If
retaining
finger is on an angle, loosen screw (G), turn retaining
finger support
The height
screw
(J), set to required height and tighten screw securely.
(H) slightly
of
retaining finger can be adjusted by loosening
as
required and retighten screw.
Fig.22
THREAD
TENSION RELEASE
Fig.23
Needle thread tension assemblies (A, Fig. 23) are set
as
correctly when the tension discs (B) start to release
presser foot is raised to within 1/8 inch (3.2mm)
of
its travel and completely released when presser foot has
of
the
the end
reached its highest position.
Adjustment can be made by removing plastic plugs (C),
and loosening screws
(A) to advance the release action
(D) and lower tension assemblies
or
raise tension as-
semblies to retard the release action. Hold tension as-
semblies in position while retightening screws (D).
Reassemble plastic plugs securely.
Loosen lock nut (A, Fig. 24) and adjust screw (B) in
presser foot lifter lever, allowing presser foot to be raised
to its highest position without interfering with needle
head. Lock nut
THREAD
(A)
securely.
CONTROL SETTINGS
Needle bar eyelet (A, Fig. 25) should be set with its eyelets
1/16 inch (1.6mm) below strike-off (B) on needle thread
take-up cam wire (C), as shown in Figure 25, with needle
bar at BOTTOM
of
stroke.
Adjustments can be made by bringing needle bar up,
loosen screw (D) slightly, bring needle bar down to
of
Fig.24
TOM
stroke, reposition eyelet (A) as required and
18
BOT-
THREAD CONTROL SETTINGS (Continued)
bring needle bar back up. Torque screw (D) to 10 in-lbs
(11.5 em/kg).
Needle thread take-up cam wire
contact needle threads with needle bar at top
(C) should be set to barely
of
stroke.
Adjustment can be made by loosening cam mounting
screw
and retighten screw . Auxiliary strike-off
(E), reposition cam forward
or
rearward as required
(F) should be
set so needle threads contact strike-off when needle bar is
at
BOTTOM
of
stroke with Thread Control Assembly
adjustable eyelet (C, Fig. 26) set at
(A) and position strike-off (B) as specified and retighten
screw. Thread tension on needle thread should be just
enough to pull
plied on looper thread should be just enough to steady
thread.
POWER "AIR-KLIPP" CHAIN CUTTER
Fig.26
Upper knife (A, Fig. 27) can be replaced by removing two
screws
be removed and rear suction tube cover. Loosen two
screws (C) and slide housing (D) towards the rear.
Remove throat plate support with throat plate attached.
Remove screw (A, Fig. 28) and lift up thread inlet (B).
Unhook knife spring (E, Fig. 27) and remove lower knife
(F). Reassemble knives in reverse manner. Reassemble
thread inlet (B, Fig. 28) and slide housing
forward against rear
(C).
(B).
"T". Loosen secrew
up
uniform stitches. Thread tension ap-
ADJUSTMENTS
To
replace lower knife, the upper knife must
(D, Fig. 27)
of
throat plate; tighten two screws
Fig.27
19
Fig.28
A130
0
SHEAR
1/32"
(.8mm)
PUSH
HERE
TO
KNIFE
KNIFE CROSS OVER
ANGLE
(//)
STALL
SETIING
Adjustment may be necessary after replacing
knives. With sewing motor switch in
KNIFE CROSS OVER
or
"OFF" position and
repairing
air lines connected to air motor, depress treadle until air
motor begins to operate, in and out.
IMPORTANT: Be sure that lower knife does NOT
strike against knife housing
chamber cover. Adjustment should
or
feed
be
accomplished by loosening two screws
(G, Fig. 27) and reposition air motor
(H) left
treme circumstances
necessary to shorten the stroke
or
right slightly, but under ex-
it
may become
oflower
knife travel by repositioning coupling
(J).
Carefully press against lower knife (F, Fig. 27) until air
motor stalls. With treadle still depressed, check the knife
cross over. Cross over
of
lower knife to upper knife is
positioned correctly when the lower knife is 1/32 inch
(.8mm) from the front
27.
If
adjustment is required, loosen screw
tion coupling (J)
as
of
upper knife as shown in Figure
(K)
and reposi-
required to obtain specified dimension.
A
131A
SHEAR ANGLE
Fig.29
SHEAR ANGLE
Adjustment
of
shear angle can be made by loosening nut
(A, Fig. 29) and turning screw (B) clockwise (a small
amount at a time) while manually operating knife lever
(C), continuously checking with a piece
of
thread to see
if
knives are cutting. As soon as the knives fail to cut thread
and the shear angle is zero, turn screw (B)
counterclockwise approximately 1/4 turn and lock with nut (A). Check
cutting action
of
knives when air motor is operating.
CAUTION! Turning screw (B) clockwise to an EX-
TREME
KLIPP"
SETIING
may
cause
damage
Chain Cutter assembly.
PRESSURE VALVES
to
"AIR-
Regulate valve on pneumatic control device for air motor
of
the "AIR-KLIPP" chain cutter to approximately 20-22
p.s.i.
(1.5 bar) when air motor is operating. Regulate valve
on pneumatic control device for the suction air to obtain
maximum suction, yet so that the FABRIC
TO
BE SEWN
will not be cut by the "AIR-KLIPP" chain cutter knives.
20
PULLER TIMING
The Close-Coupled Roller Puller must be timed
intermittent feeding action stops
entering the work.
ness
of
material and stitch length being sewn.
NOTE: This will depend on the thick-
BEFORE the needles are
If
so
the
adjustment is required, remove top cover which is secured with
four screws. Loosen four set screws (A, Fig.
sprocket
(B). Advance
or
retard sprocket on shaft as
30) in
required. When proper timing is obtained, position
sprocket
in the puller drive assembly. Torque four screws (A)
35 in-lbs. (40 em/kg). There should be approximately
on
its shaft (left
or
right) so drive belt is centered
to
1/8
inch (3.2mm) deflection in puller drive belt (A, Fig. 31)
when pressing
drive assembly. Adjustment can be made by loosening
one screw (C) securing eccentric
counterclockwise as viewed in (Figure 31),
clockwise acts the reverse. Be sure to maintain
inch (.150-.254mm) between eccentric and drive housing.
Tighten screw (C) securely. When assembling top cover,
care must be taken to center oil flow indicator in center
oil filler cap.
Fig.30
firmly between sprocket (B) and puller
(D)
and rotate eccentric
to tighten belt,
.006-.010
of
Fig.31
PULLER STITCH LENGTH
The feeding motion
sprockets. By using various combinations
of
the puller is achieved by two
of
nine different sprockets, (59) different puller stitch lengths can be
obtained. Refer
tp sprocket charts on Page
various sprocket combinations.
NOTE: Actual stitch
23
that lists the
length may vary slightly due to material being sewn.
When ordering sprockets use the appropriate dash number.
Example:
C50042-Z-(
).
To change sprockets loosen two screws (A, Fig. 32) and
position
screw to top
on stitch length drive belt.
of
tension bracket to release tension
NOTE: Belt guard has been
removed for clarity. With drive belt in relaxed position,
sprocket (B and
sprockets
with end
the flat
(B
of
of
shaft. Reassemble drive belt, tighten 2nd screw
in sprockets
C) can be removed. When installing
and C) make sure that hub
shaft and 1st screw
(B
and C) securely. Rotate handwheel in
in
of
sprocket is flush
operating direction is on
operating direction to make sure belt does not bind within
Fig.32
21
PULLER
STITCH LENGTH (Continued)
Fig.34
belt guard. It may be necessary
and C) slightly (left and right). Pull down
assembly, making sure puller roller
lower roller and tighten two screws (A) securely. The
roller puller belt which is located under hinged belt guard
(D) should have
ing
fmnly
If
adjustment is required loosen two allen screws (A,
et.
Fig. 33) and
tension
counterclockwise acts the reverse.
must be taken not
Tighten two screws (A) securely.
on
1/8
inch (3.2mm) deflection when press-
between drive shaft sprocket and drive sprock-
tum
eccentric shaft (B) slightly to apply
belt. Turning shaft clockwise tightens belt,
to
disturb eccentric shaft (left
to
reposition sprockets (B
firmly
is
setting evenly on
CAUTION: Care
on
or
right).
puller
IDLER ROLLER
Puller Roller must
34) to ensure that the material will
through the sewing area. Adjustment for feeding can be
made by shimming Idler Roller
even mating.
34) securing roller assembly. Remove Idler Roller Assembly and add shims as necessary between plate and
bearing blocks to ensure mating between Puller Roller and
Idler Roller.
be
set evenly
To
shim roller remove
on
Idler Roller (A, Fig.
be
pulled straight
if
necessary to achieve
one
screw (B, Fig.
PULLER LIFT ADJUSTMENT
With puller in the operating position and presser foot
on
resting
between puller lifter link (A, Fig. 35) and puller lifting
(B).
presser foot lifting shaft connection
(A) as required. Tighten connection screw
NOTE:
For
machine can
turning the manual lock-up
stop collar
clear material, stop collar
tension shaft (F)
(G) so it exerts only enough pressure
work. Turning regulator clockwise to increase the pressure, counterclockwise acts the reverse.
not pull straight through behind presser foot
regulator knob until material is straight.
throat plate there should
If
adjustment
When
at
the same time.
sewing operations not requiring puller action the
be
(E).
is
required loosen screw (C) in upper
presser foot starts to lift, puller must lift
run
with puller raised
pin
If
the puller has insufficient clearance to
(E) can be raised
to
suit. Adjust puller tension regulator
(D)
be
1/32 inch (.8mm)
and
raise
or
lower link
(C) securely
off
the material by
up
to position under
or
lowered
on
puller to feed
If
material does
tum
pin
..
on
stitch
Fig.35
22
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