UnionSpecial XF511H100MF Setup guide

CATALOG NO.
142M
First Edition
STYLES
XF511H100MF
XF511H112MF
Finest Quality
Adjusting instructions and
illustrated parts list
Maximum performance XFSOO Seriesflatbed
machines
for ultra high speed seaming operations
\. (
From the library of: Superior Sewing Machine & Supply LLC

FOREWARD
This technical manual has been prepared to guide you in the maintenance of your
new UNION SPECIAL 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 UNION SPECIAL machine.
The Adjusting Instruction portion of this manual explains in detail the proper
setting for each of the components related to forming the stitch and completing the
functions of the machine. Figures are
used to illustrate the adjustments using
reference
letters to point out specific items discussed.
Adjustments are presented in sequence
so that a logical progression is accom-
plished. Some adjustments performed out of sequence may have an adverse effect on
the function of other related parts.
Implementation of preventative maintenance procedures can bring about signi-
ficant improvements in operator productivity by avoiding costly equipment break-
downs. Whenever it becomes necessary to make repairs 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.
To simplify indentification of repair parts, the mechanisms are illustrated by
exploded views. A colored insert in the center of this catalog presents the mech-
anisms of the machine assembled.
Catalog No. 142M
For Styles
XF511H100MF
XF511H112MF
First Edition
Copyright
1983
By
Union Special Corporation
Rights
Reserved In All Countries
Printed
In U.S.A.
Apri 1, 1983
2
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IDENTIFICATION OF MACHINES
Each UNION SPECIAL machine is identified by a Style number, which on this Class
machine, is stamped into the Style plate affixed to the right front of machine.
Serial number is stamped into bed casting at the right rear base of machine.
STYLES OF MACHINES
Super high speed, maximum performance, medium sewing capacity, double locked stitch
machine. Modular construction, totally enclosed feed and looper drive mechanism,
fully automatic forced feed lubricating system with built-in oil cooler, easily
replaceable oil
filter, quick stitch change, adjustable feed lift, independently
driven rear needle guard, quick adjustable looper avoid
and built-in needle cooler.
XF511HlOOMF Single needle, plain feed, low inertia presser foot permitting light
presser foot pressure for positive feeding and chaining, even at ex-
tremely
high sewing speeds -for long seams on light to medium weight
fabrics
such as in trousers, skirts, coats, jackets, etc. Seam spec-
ification 401 SSa-1. Type 128 GBS needle. Stitch range 7-10 S.P.I.
Maximum recommended speed 9000 R.P.M., depending on operation.
XF511Hll2MF Same as Style XF511HlOOMF except, equipped with Power
11
AIR-KLIPP
11
®
chain cutter.
SAFETY RULES
CAUTION!
THIS SAFETY SYMBOL INDICATES YOUR PERSONAL SAFETY IS INVOLVED
TO PREVENT PERSONAL INJURY:
- All power sources to the machine MUST be TURNED OFF before threading, oiling, ad-
justing or replacing
parts.
- Wear safety glasses.
-All shields and guards MUST be in position before operating machine.
-DO NOT tamper with safety shields, guards, etc., while machine is in operation.
LUBRICATION
Oil has been drained from main reservoir before shipment. Use a straight mineral
oil with a Saybolt viscosity of
90 to 125 seconds at 100 degrees F. This is equi-
valent to
UNION SPECIAL specification No. 175. Remove oil fill er cap (A, Fig. 1) and
fill to TOP line of level gauge (B). Replace filler cap.
3
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LUBRICATION (Continued)
CAUTION! When starting to operate machine, watch oil filler cap (A) to assure that
oil flow indicator rises in same. If the flow indicator does not rise in
a short period of running time,
this indicates oil is not circulating
properly
and machine should not be run for an extended period. With
lubrication system working properly, stop machine after a nominal running
period
and RECHECK oil level.
To maintain maximum recommended speed and serviceability of this equipment when
operating continously, the oil must be changed at least every six months. In no case
should oil
remain in the machine for more than one year. Two oil drain plugs are
located in
bottom of oil pan. ALWAYS replace oil filter when oil is changed. It is
recommended to change oil filter after the first three months of operation. At this
time, evaluate the contaminated condition to determine if the oil filter should be
changed more or less often. To replace filter, remove four screws (C) and cover (D);
lift out filter cartridge. Remove brass by-pass valve and assemble to new filter.
Replace in reverse manner.
THREAD MACHINE AS ILLUSTRATED IN FIG. 1.
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 largest diameter 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 UNION SPECIAL CORPORATION.
The standard recommended needle for machines covered is Type 128 GBS, Size
090/036.
Below is the description and sizes available:
NEEDLE TYPE
128 GBS
DESCRIPTION
Round shank, round point, short,
double groove, struck groove, ball
eye, spotted, ball point,
chromium
plated.
SIZES AVAILABLE
080/032, 090/036,
100/040, 110/044,
125/049, 140/054,
150/060.
To have needle orders promptly and accurately filled, an empty package, a sample
needle or type and size number should be forwarded. Use description on label. A
complete order would read
11
1000 needles, Type 128 GBS, Size 090/036
11
•
ADJUSTING INSTRUCTIONS
NOTE: Instructions stating direction or location, such as right, left, front or
rear of
machine, are given relative to operator's position at the machine,
unless otherwise noted. The handwheel rotates counterclockwise, in op e r-
ating direction; when viewed from the right end of machine.
4
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PRESSURE OIL
SIPHON RETURN
RETURN OIL D
PRIORITY VALVE PRESSUR E
D INLET
FILTER BY-PASS
5
From the library of: Superior Sewing Machine & Supply LLC

Fig. 1
THREADING AND OILING DIAGRAM
CAUTION! Oil has been drained from machine before shipping and the reservoir must be
filled before beginning to operate. Use a straight mineral oil with a Saybolt visco-
sity of 90 to 125 seconds at 100 degrees F. Fill machine with oil at filler cap (A)
to the TOP line of level gauge (B). Oil flow indicator (white bulb) should rise in
filler cap (A) shortly after beginning to operate which is a visual indication of
proper oil circulation. Failure of oil
flow indicator to rise in filler cap ind i-
cates malfunction in lubricating
system or clogged oil filter; refer to "LUBRICATION".
Ashort running period is required to fill the oiling system; recheck oil level.
6
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TIMING FEED TO NEEDLE
A quick check to determine if feed is
timed with needle -turn handwheel in operating
direction to position needle bar
at TOP of
stroke. Setscrew
(A, Fig. 2) in the pulley
(B), located
on the FLAT of lower mainshaft
should
be to the FRONT or 9 o'clock as viewed
in Fig. 2.
Adjustment would be required if machine is
feeding with needle in work -needle should be
at TOP of stroke when feed is at its highest
position.
Fig. 2
Remove top cover which carries needle
thread tension assembly,
head cover and all
covers over feed mechanism chambers.
Turn handwheel in operating direction to
position needle bar
clamp (A, Fig. 3) at TOP
of stroke. Loosen four screws (A, Fig. 4) in
upper mainshaft sprocket (B) and hold hand-
wheel so upper mainshaft and needle bar can-
not
move.
Fig. 3
While holding handwheel, turn lower mainshaft
to position feed
crank counterweight (A, Fig.
5) with its FLATS perpendicular to the bottom
of machine and facing away from the operator
as shown in Fig. 5. Tighten screws (A, Fig. 4)
in upper mainshaft sprocket (B).
NOTE: Cardan drive internal tooth ring gear
(B, Fig. 3) has been set at the factory
and secured with screws (C). DO NOT
attempt to remove this gear. Without
proper adjustments, damage to needle bar
may result.
Fig. 4
NOTE: Whenever "timing feed to needle" is
corrected, always check "SYNCHRONIZING
LOOPER AND NEEDLE MOTIONS".
Fig. 5
7
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SYNCHRONIZING LOOPER AND NEEDLE MOTIONS
Looper dri ve belt (A, Fig. 6) has proper tension if, when turning handwheel in operating
direction to position looper in the center of
its (right to left) travel -there is no noticable
(right to left) play in the looper mechanism. There should be approximately 1/8 inch (3.2mm)
deflection in looper drive belt when pressing firmly with thumb, midway between sprockets (Band C).
Adjustment can be made by loosening two screws (D) and turn looper module (E) clockwise (as viewed
from handwheel end of machine) to tighten belt tension or counterclockwise to loosen belt tension.
It is easier to turn looper module by turning cast-off plate mounting bracket (F). At this
time, notch {G) on end of looper module should be facing mostly in the upward position (between 9
and 3 o'clock). Loosen binder screw (H) and reposition cast-off plate mounting bracket (F) so its
leading edge (J) is vertical to and parallel with bed casting. Ret ighten screw (H) assurin9 that
right side of mounting bracket is flush with right side of looper module. Tighten screws (OJ.
Turn handwheel in operating direction until point of looper, moving to the left, is even with
the
left side of needle. Note the height of the eye of the needle with respect to the looper point;
now turn handwheel in the reverse direction until point of looper, again moving to the left, is even
with the left side of needle. If the height of the eye of the needle with respect to the looper
point are the
same, looper and needle motions are synchronized- a variation of .005 inch (.127mm)
is allowable.
If machine is out of synchronization, proceed as follows :
Remove right cloth plate covering the dry chamber . Remove presser foot, throat plate, feed dog
and looper. Using gauge No. 21227 R, place gauge plate on throat plate seat using throat plate
screws for attaching. With looper holder at EXTREME right end of travel, insert pin (included with
gauge) into looper holder.
Insert
shank of indicator gauge into the hole used for needle thread take-up wire. Turn hand-
wheel in operating direction until pin makes contact with edge of gauge plate. Set the height of
gauge so left end of pointer rests on top of needle bar and right end of pointer aligns with "0",
lock shank of gauge in this position with set screw used for needle thread take-up wire. Turn hand-
wheel in reverse direction until pin in looper holder again makes contact with edge of gauge plate,
note the reading on gauge. Avariation of one graduation on the scale is permissable.
If the reading is above "0" on the gauge, 1 oosen screws ( K, Fig, 6) and advance 1ooper drive
rear sprocket
(B) (towards the operator); if the reading is below "0" on the gauge, sprocket (B)
should be retarded slightly (away from operator). If the variation on the scale of the gauge is to
the
EXTREME - a STARTING POINT for adjustment would be to position sprocket (B) so that when needle
bar
is at bottom of its stroke, the looper is at right end of its travel. To obtain the above
condition, loosen screws (K) and turn sprocket {B) so that looper is at the right end of it s travel.
While holding looper shaft, turn handwheel to bring needle bar to bottom of its stroke and s nug
screws (K). Then proceed to fine adjustment as required to attain "0" plus or minus 1 on the gauge
in both directions and tighten screws (K) securely, assuring belt is centered on sprockets.
Fig. 6
If a synchronizing gauge is not available - and
the distance from the eye of the needle to the bottom
side of the looper was greater when the handwheel was
turned in the operating direction, adjust s am e as if
reading wa s above "0" on the gauge -reverse th is ad-
justment
if distance from the eye of the needle to the
bottom side of the looper was less. Replace all parts
that were re moved for this adjustment.
8
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LOOPER SETTINGS
Insert a new needle, type and size speci-
fied.
With looper positioned at extreme right
end of travel, distance from centerline of nee-
dle to point of looper should
be 5/32 inch
(4.0mm). Adjustment can be made by loosening
screw (A, Fig. 7) and turn screw (B) clockwise
to increase looper
gauge or counterclockwise
to decrease.
Push looper holder (C) to the
left while making this adjustment and locking
with
screw (A).
Looper gauge No. 21225-5/32 can be used
advantageously in making this adjustment.
Looper must also be set so, as it moves to the
left behind the needle, NOT to touch, but with
a
MAXIMUM of .005 inch (.127mm) clearance.
Adjustment can be made by loosening screw (A)
and moving looper holder (C) forward or rear-
ward on its shaft to attain specified condi-
tion;
push looper holder to the left while
tightening
screw (A).
NEEDLE BAR HEIGHT
Turn handwheel in operating direction
until
tip of looper is even with left side of
needle.
TOP of needle eye should be 1/64 inch
(.4mm) below TIP of looper (as shown in Fig.
8).
Adjustment can be made by loosening screw
(A, Fig. 8), move needle bar (B) up or down as
required, retighten screw (A) to 8 in-lbs
(9.22cm/kg).
NOTE: Do not wedge needle bar with screwdriver.
It is made of aluminum and has a special
coating. Otherwise,
damage to needle
bar
may result.
LOOPER AVOID
Fig. 7
Fig. 8
Machine is equipped with a quick adjust-
able looper avoid to
accomodate extreme differ- Fig. 9
ences in needle sizes. If looper avoid requires re-setting, loosen two screws (A,
Fig. 9) 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).
NOTE: Whenever looper avoid is changed, always recheck
11
LOOPER SETTINGS ...
Numbers on plate (C) are for reference only and have no value as to
the exact
amount of looper avoid.
9
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Fig. 10
Fig. 11
Fig. 12
FEED DOG SETTINGS
Feed dog should be centered in throat
plate with
equal clearance on all sides and
ends. At highest point of travel, feed dog
teeth should extend the depth of a tooth or
approximately 3/64
inch (1.2mm) above throat
plate
and parallel to same. Minor right to
left adjustments can be made by loosening
three
screws (A, Fig. 10) in throat plate
support
(B). There are two adjustable ferru-
les
used to align throat plate support. Loo-
sen two screws (C) which secure the ferrules
and reposition throat plate support slightly
as required, considering both needle hole and
feed dog slots. Tighten two screws (C)
first, then tighten three screws (A).
If this adjustment is not enough to meet
required conditions, proceed as follows;
Loosen four screws (A, Fig. 11) securing
feed bar seal plate, loosen set screw (A,
Fig. 12) securing feed lift bushing, loosen
screw (B) securing feed bar spacer, loosen
two screws (C) in thrust collar and loosen
binder
screw (D) in stitch control link.
This will permit shifting the feed mechanism
slightly as required to center feed dog in
throat plate. Tighten four
screws (A, Fig.
11),
screw (B, Fig. 12), two screws (C) while
thrusting
collar against feed rocker, screw
(A) and screw (D) assuring that timing mark
on stitch control link is aligned with timing
mark on stitch regulating shaft.
10
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FEED DOG SETTINGS (Continued)
Front to rear adjustments can be made by
loosening two screws (A, Fig. 13), reposition
feed
dog holder (B) as required. Press down
on front of feed dog (C) while tightening
screws (A).
Parallel adjustment can be made by remov-
in~ throat plate, loosen two screws (A, Fig.
13) and screw (A, Fig. 14) so feed dog (B) can
be raised enough to loosen locking screw (C).
Fig. 13
Turn feed dog tilting cam (A, Fig. 15)
as required to level feed dog - check para-
llelism
by positioning throat plate; retigh-
ten
screw (C, Fig. 14) and screws (A, Fig.
13) while pressing down on front of feed dog.
Fig. 14
Set feed dog to proper height with feed
dog height supporting screw (8, Fig. 15) to
maintain
this setting; tighten screw (A, Fig.
14) while pressing down on front of feed dog.
Replace throat plate.
Fig. 16
Fig. 15
NOTE: More or less
11
FEED LIFT
11
can be acquir-
ed by loosening screw (A, Fig. 16) and
turning adjusting dial (B) towards the
operator to increase feed
lift, turn-
ing
away from operator acts the reverse;
retighten
screw (A). Ensure that feed
dog does not strike throat plate or
looper throughout
its path of trav~l.
11
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Fig. 17
REAR NEEDLE GUARD
At extreme forward end of travel, rear
needle
guard {A, Fig. 17) must be set horiz-
ontally not to contact needle
(B) with a max-
imum clearance of .005 inch (.127mm). Guard
should be set as low as possible, yet have
its vertical face approach approximately 3/64
inch
(1.2mm) of needle point until point of
looper
(C) moving to the left, is even with
the
right side of needle. Adjustment can be
made by loosening screw (D), reposition
needle
guard as required and retighten screw.
If additional front to rear adjustment is required to maintain needle guard in
a horizontal position, loosen
screw (E) in pivot link which allows needle guard shaft
to be rotated. Be sure to take up thrust, by exerting pressure against needle guard
holder to the left and pivot link to the right, when tightening screw (E).
NOTE: Change in stitch length WILL NOT require change in needle guard setting, but a
change of needle size may.
PRESSER BAR AND PRESSER FOOT
With needle bar at bottom of stroke and presser foot resting on throat plate,
there should
be l/32 inch (.8mm) clearance between top of screw and top of slot in
presser foot
as shown in Fig. 18. There should be l/16 inch (1.6mm) clearance bet-
ween bottom of slot in lifter lever link (A) and bottom of presser bar guide (B) when
foot lifter lever is released.
If adjustment is required, proceed as follows;
Loosen nut (C) and turn screw (D) down approximately 1/8 inch (3.2mm) below
bottom surface of presser bar guide (B). Back off presser spring regulating screw
and loosen screws (E) in presser bar 9uide (B) so that presser foot is sitting
squarely on throat plate and screw {D) is touching the bottom of the presser bar
guide fork, then secure screws (E).
Fig. 18
Turn presser spring regulating screw all
the way down, then back off screw (D) count-
erclockwise to obtain the
1/32 inch (.8mm)
dimension in presser foot, lock nut (C).
Loosen screw (F) in lifter arm (G) and rotate
arm slightly as required to obtain the l/16
inch
(1.6mm) dimension between link (A) and
guide (B), retighten screw (F).
12
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THREAD TENSION RELEASE
Needle thread tension assembly (A, Fig.
19) is set correctly when the tension discs
(B) start to release as the presser foot is
raised to within 1/8 inch (3.2mm) of the end
of its travel and completely released when
presser foot has reached its highest position.
Adjustment can be made by loosening screw
(C) and lower the tension assembly (A) to ad-
vance the release action or raise tension
assembly to retard the release action. Hold
tension assembly in position while retighten-
ing screw (C).
CHANGING STITCH LENGTH
Stitch length is changed by pressing down
and turning stitch length regulating knob (A,
Fig. 20) clockwise to shorten the stitch or
counterclockwise to lengthen
same. Tool No.
21205 B can be used advantageously when making
this adjustment.
Recheck front to rear clearances under
"FEED DOG SETTINGS" whenever stitch length is
changed. Bottom limit stop (B) should be set
by screw (C) to prevent stitch length regu-
lating
knob (A) from accidentally being turned
beyond the desired maximum stitch length.
LOOPER THREAD TAKE-UP AND CAST -OFF PLATE
Looper thread take-up (A, Fig. 21) should
be centered, left to right, in cast-off plate
(B).
It should also be positioned so as the
needle bar
is descending, the looper thread is
cast-off when the point of the needle is even
with the bottom of the looper. Adjustment can
be made by loosening two screws in take-up,
through access hole in
cast-off plate, reposi-
tion
as required and retighten screws. Set
adjustable eyelets (C) l/2 inch (12.7mm) below
centerline of their mounting screws.
Fig . 19
Fig. 20
Fig. 21
If cast-off wire is rubbing take-up, loosen screw (D), center the wire (E) and
retighten screw. If retaining finger is rubbing take-up, loosen sct·ew (F), center
the finger
(G) and retighten screw. If retaining finger is on an angle, loosen screw
(H), turn retaining finger support (J) slightly as required and retighten screw. The
height of cast-off plate is set correctly when the lowest point of the take-up cam is
even with top surface of the cast-off plate. To make the adjustment, turn handwheel
in operating direction to locate the lowest point of the take-up cam. Loosen screw
(K) and position the cast-off plate to obtain the specified condition and then secure
screw (K).
13
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D
Fig. 22
Fig. 23
. 003" (.076mm)
l
Fig. 24
A
D
1/16"
(1.6mm)
THREAD CONTROL (PRELIMINARY SETTINGS)
Needle bar eyelet {A, Fig. 22) should be set
with its eyelets 1/16 inch (1.6mm) below strike-
off (B) on needle thread cam (C) as shown in Fig.
22, with needle bar at BOTTOM of stroke. Adjust-
ments can be made by bringing needle bar up,
loosen screw (D) slightly, bring needle bar down
to BOTTOM of stroke, reposition eyelet (A) as
required and bring needle bar back up to tighten
screw (D).
Needle thread cam (C) should be set to bare-
ly contact needle thread with needle bar
at TOP of
stroke.
Adjustment can be made by loosening
needle thread
cam attaching screw (E), reposition
cam forward or rearward as required and retighten
attaching
screw (E).
Tension on needle thread should be just
enough to pull up uniform stitches.
Tension on looper thread should be just
enough to steady thread when sewing at high
speed.
POWER •AIR-KLIPP• CHAIN CUTTER ADJUSTMENTS
NOTE: All references to Fig. 23 are as viewed
from rear of machine; references to Fig.
24 are as viewed from left end of machine.
To replace the thread cutting knives, the fol-
lowing procedure should be followed:
The upper knife {A, Fig. 23) is replaced by
removing two screws (B). In order to replace
lower knife -the upper knife, rear cover and
thread inlet must be removed. The lower knife (C)
is held in position by a roll pin {A, Fig. 24) and
tension spring {D, Fig. 23). To remove lower
knife, lift up and tilt to the right. When
replacing lower knife, be sure to engage end
of tension spring through the hole in side of
lower knife before inserting in the slide block
(E).
Also be sure the slot in lower knife is
located over roll pin as shown in Fig. 24.
Proper left to right adjustment of lower knife is correct when at extreme left of
travel there is 1/32 inch
(.8mm) clearance between front of its cutting edge and upper
knife cutting edge as shown in Fig. 23. To adjust, move slide block to extreme left and
loosen lock screw (F, Fig. 23). Then while holding drive shaft {G) from moving, reposi-
tion
slide block to proper dimension for lower knife and retighten lock screw (F).
Shear angle can be adjusted by turning screw {B, Fig. 24) clockwise to increase angle
or counterclockwise to decrease angle. Proper shear angle
is .003 inch (.076mm) measured
at rear cutting edge of lower knife (C) and cutting edge of upper knife (D) as shown in
Fig.
24.
14
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EXPLODED VIEWS
AND
DESCRIPTION OF PARTS
15
From the library of: Superior Sewing Machine & Supply LLC

17
70
89
87 I!>
~ -
80
16
:: -a .. j L,.
--¢_-' lij /25
27
56
/57
~ 58
?
~
From the library of: Superior Sewing Machine & Supply LLC

Ref.
Part
No.
~
1 C50095 G
2
12934 A
3
RM2879-2
4 97127
5 C50095 F
6
C5\JU~5 E
7
C50095 D
8
C50082 R
9
660-219 A
10 C50082 AA
11 22883 B
12 22541 c
13 C50082 S
14 C50082 K
15 C50082 V
16 22569 M
17 C50082 M
18 C50082 N
19 22861 c
20 C50082 U
21 22597 E
22 C50082 X
23 C50093 AU
24 C50093 AS
25 21192 R
26 C50082 T
27 22851 D
28 C50082 L
29 22730
30 56322 B
31 22894 E
32 C50093 AY
33 81
34 C50090 K
35 C50055 S
36 C50055 L
37 C50090 E
*38 C50055 C
*39 660-220
40 C50054 D
41 22539 G
42 C50054
43 C50093 CT
44 C50054 C
45 C50057 D
46 C50093 AY
47 660-739
48 C50055 K
49 C50093 AX
*50 C50093 AW
51 22597 E
52 C50090 F
53 643-429 Blk.
54 C50090 G
55 51-627 Blk.
56 thru 110
MAIN FRAME, BUSHINGS AND COVERS
Amt.
Description
~
Shield Assembly, safety ----------------------------------------------- 1
Nut -------------------------------------------------------------- 2
Rivet
------------------------------------------------------------ 2
Washer, spring --------------------------------------------------- 2
Shield, safety
--------------------------------------------------- 1
Bracket,
mounting ------------------------------------------------ 1
Stud -----------------------------··------------------------------- 1
Cover, head ----------------------------------------------------------- 1
Pin,
roll -------------------------------------------------------- 1
Gasket ----------------------------------------------------------- 1
Screw, plug ------------------------------------------------------ 1
Screw ----------------------------------------------------------------- 4
Gasket ---------------------------------------------------------------- 1
Gasket ---------------------------------------------------------------- 1
Cover, head (left rear) ----------------------------------------------- 1
Screw -------------------- · ·-------------------------------------------- 9
Cover, head (right rear) ---------------------------------------------- 1
Gasket ---------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 4
Cover, top ------------------------------------------------------------ 1
Screw ------------------------------------------------------------ 1
Gasket ---------------------------------------------------------------- 1
Cap, oil filler ------------------------------------------------------- 1
Indicator,
oil flow --------------------------------------------------- 1
Ball, steel
----------------------------------------------------------- 1
Gasket ---------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 4
Cover, oil cooler ----------------------------------------------------- 1
Screw ----------------------------------------------------------------- 1
Gasket ---------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 1
Plug,
oil ------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 1
Bushing, presser foot
lifter lever (right) ---------------------------- 1
Bushing,
upper mainshaft (right center) ------------------------------- 1
Bushing, upper mainshaft
(left center) -------------------------------- 1
Bushing, presser foot
lifter lever (left) ----------------------------- 1
Eccentric, for internal tooth gear
------------------------------------ 1
"0" Ring -------------------------------------------------------------- 1
Shield, needle bar bushing
-------------------------------------------- 1
Screw, plug ----------------------------------------------------------- 1
Bushing, needle bar (upper)
------------------------------------------- 1
Plug (spreader shaft hole) -------------------------------------------- 1
Bushing, needle bar (lower)
------------------------------------------- 1
Bushing, presser bar (lower)
------------------------------------------ 1
Plug,
oil ------------------------------------------------------------- 1
Seal,
oil, presser bar bushing---------------------------------------- 1
Bushing, upper mainshaft
(left) --------------------------------------- 1
Plug,
oil ------------------------------------------------------------- 1
Plug,
oil ------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 1
Bushing, presser foot
lifter lever (rear) ----------------------------- 1
Tube, oil supply ------------------------------------------------------ 1
Bushing, presser foot
lifter lever (front) ---------------------------- 1
Plug ------------------------------------------------------------------ 1
See following page
*DO NOT ATTEMPT TO LOOSEN, ADJUST OR REMOVE THESE PARTS -THEY WERE ORGINALLY SET AT THE FACTORY.
SPECIAL TOOLS AND GAUGES ARE REQUIRED TO RESET. ANY PROBLEM PERTAINING TO THE FUNCTION OF THESE
PARTS MUST BE REFERRED TO YOUR UNION SPECIAL CORPORATION REPRESENTATIVE OR LOCAL DISTRICT OF FICE
FOR INSTRUCTIONS.
17
From the library of: Superior Sewing Machine & Supply LLC

23
89
88
18
27
56
/57
~ 58
~
~
From the library of: Superior Sewing Machine & Supply LLC

Ref.
Part
.JlQ.:_
No .
1 thru
55
56
C50090 A
57
22569 v
58
22569 w
59 22569 c
60
C50075
61
22569 G
62 87
63
C5000l A
64 C50049
65
22569 G
66
C50082 0
67
C50024 A
67A C50024 B
68 87
69
C5000l B
69A
99679 so
70
22569 B
22569 B
71
22585 u
72 22839
73
22587 N
74
C50080 B
75 C50080 A
75A
C50080 AA
76 C50049 A
77
C50051 X
78 22521
79 C50036 U
80 C50035 Y
81 C50035 Z
82 C50044 F
83
22652 B-12
84 22652 0-24
85
22652 D-12
86 C50082 B
87
22517
88 C50082 C
89 22526 H
90
22569 G
91 C50082 AJ
92 C50082 AK
93 22569 0
94
56322 B
95
C50068 F
96
C50051 Q
97
C50082
98
C50035 Z
99
C50051 T
100 C50036 J
101
C50035 G
102
C067 F
103
C50082 E
104
C50032 B
105
C50032 0
106
C50093 AY
107 C50044 G
108
660-897
109
C50044 0
110
C50068 X
MAIN FRAME, BUSHINGS AND COVERS
Amt.
Description
~
See preceding page
Cover, pulley assembly ------------------------------------------------ 1
Screw ----------------------------------------------------------------- 2
Screw ----------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 5
Cover, blower --------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 5
Screw ----------------------------------------------------------------- 2
Plate, cloth (right) -------------------------------------------------- 1
Window, stitch indicator ----------------------------------------- 1
Screw ----------------------------------------------------------------- 9
Cover, feed chamber for Style XF511HlOOMF ----------------------------- 1
Plate,
throat, for Style XF511HlOOMF ---------------------------------- 1
Plate, throat, for Style XF511Hll2MF ---------------------------------- 1
Screw ----------------------------------------------------------------- 2
Plate, cloth (left) for Style XF511HlOOMF ----------------------------- 1
Plate, cloth (left) for Style XF511Hll2MF ----------------------------- 1
Screw, for plate No. C50001 B ----------------------------------------- 4
Screw, for plate No. 99679 SO ----------------------------------------- 2
Screw, for cloth plates ----------------------------------------------- 1
Screw ----------------------------------------------------------------- 3
Screw ------------------------------------ - ---------------------------- 2
Ferrule, locating
----------------------------------------------------- 2
Support, throat
plate, for Style XF511HlOOMF -------------------------- 1
Support, throat
plate, for Style XF511Hll2MF -------------------------- 1
Window, stitch indicator (left) --------------------------------------- 1
Plug,
stitch adjustment hole ------------------------------------------ 1
Screw, for bed -------------------------------------------------------- 1
Bushing, feed rocker shaft
(left) ------------------------------------- 1
Bushing --------------------------------------------------------------- 1
Plug ------------------------------------------------------------------ 1
Bushing, driveshaft
(left) -------------------------------------------- 1
Screw ----------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 3
Screw ----------------------------------------------------------------- 3
Cover, end ------------------------------------------------------------ 1
Screw ----------------------------------------------------------------- 8
Gasket ---------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 2
Screw ----------------------------------------------------------------- 2
Cover, front (end cover) ---------------------------------------------- 1
Gasket ---------------------------------------------------------------- 1
Screw ----------------------------------------------------------------- 1
Gasket ---------------------------------------------------------------- 1
Bushing, rear needle guard shaft
(left) ------------------------------- 1
Plug ------------------------------------------------------------------ 1
Gasket ---------------------------------------------------------------- 1
Plug ------------------------------------------------------------------ 1
Plug ------------------------------------------------------------------ 1
Bushing, feed rocker shaft
(right) ------------------------------------ 1
Bushing,
stitch control shaft ----------------------------------------- 1
Plug, cork
------------------------------------------------------------ 1
Gasket ---------------------------------------------------------------- 1
Spring, latch (front cover)
------------------------------------------- 1
Plate, nut ------------------------------------------------------------ 1
Plug,
oil ------------------------------------------------------------- 1
Bushing, feed drive shaft
(right) and lower mainshaft (le ft) ---------- 2
Plug,
screw ----------------------------------------------------------- 1
Bushing, looper rocker shaft
------------------------------------------ 1
Bushing, rear needle guard shaft (right)
------------------------------ 1
19
From the library of: Superior Sewing Machine & Supply LLC

6
46 45
49~~
5o::__P
51
20
29
~-
-~ .
52
From the library of: Superior Sewing Machine & Supply LLC